2007

Mazda3
MAZDASPEED3
Mazda5
Mazda6 Mazda3
MAZDASPEED6
Mazda MX-5 MAZDASPEED3
Mazda RX-8

Service
Highlights Mazda5
FOREWORD

This manual explains components, system

operations and functions for the Mazda3,
MAZDASPEED3, Mazda5, Mazda6,
Mazda6
MAZDASPEED6, Mazda MX-5,
Mazda RX-8. MAZDASPEED6
For proper repair and maintenance, a
thorough familiarization with this manual is
important, and it should always be kept in a
handy place for quick and easy reference.

All the contents of this manual, including

drawings and specifications, are the latest
Mazda MX-5
available at the time of printing.
As modifications affecting repair or
maintenance occur, relevant information
supplementary to this volume will be made
available at Mazda dealers.
This manual should be kept up-to-date.

Mazda Motor Corporation reserves the right

Mazda RX-8
to alter the specifications and contents of
this manual without obligation or advance
notice.

All rights reserved. No part of this book may © 2006 Mazda Motor Corporation
be reproduced or used in any form or by PRINTED IN U.S.A., JULY 2006
any means, electronic or mechanical— Form No. 3422–1U–06G
including photocopying and recording and Part No. 9999–95–MODL–07
the use of any kind of information storage
and retrieval system—without permission in
writing.

Mazda Motor Corporation

HIROSHIMA, JAPAN

APPLICATION:
This manual is applicable to vehicles
beginning with the Vehicle Identification
Numbers (VIN),and related materials shown
on the following page.

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 Mazda MX-5

CONTENTS
TITLE SECTION

ENGINE 01

BODY & ACCESSORIES 09

Mazda MX-5

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 2007 Mazda3, MAZDASPEED3, Mazda5, Mazda6, MAZDASPEED6, Mazda MX-5,
Mazda RX-8 Service Highlights (3422–1U–06G)

ENGINE 01
SECTION

Toc of SCT
OUTLINE[LF] . . . . . . . . . . . . . . 01-00 ON-BOARD DIAGNOSTIC
[LF]. . . . . . . . . . . . . . . . . . . . . 01-02
CONTROL SYSTEM[LF] . . . . . 01-40
Toc of SCT
01-00 OUTLINE [LF]
ENGINE ABBREVIATIONS[LF] . . . . . . . . 01-00–1 ENGINE SPECIFICATION[LF] . . . . . . . . 01-00–2
ENGINE FEATURES[LF] . . . . . . . . . . . . . 01-00–1 Specification . . . . . . . . . . . . . . . . . . . . . 01-00–2
On-board Diagnostic . . . . . . . . . . . . . . . 01-00–1

End of Toc
ENGINE ABBREVIATIONS[LF]
NG: ENGINE COMPLETE

id0100e1100100

ABS Antilock Brake System

AT Automatic Transmission
ATDC After Top Dead Center
BTDC Before Top Dead Center

Mazda MX-5
CAN Controller Area Network
CCM Comprehensive Component Monitor
CM Control Module
DC Drive Cycle
DSC Dynamic Stability Control
EX Exhaust
HU Hydraulic Unit
IN Intake
KOEO Key On Engine Off
KOER Key On Engine Running
MT Manual Transmission
OCV Oil Control Valve
PCV Positive Crankcase Ventilation
PID Parameter Identification
RAM Random Access Memory

End Of Sie
ENGINE FEATURES[LF]
id0100e1100200
On-board Diagnostic
To meet OBD-II regulations • Mode 03 of diagnostic test modes changed
Improved serviceability • Mode 01, 06, and 08 of diagnostic test modes changed

End Of Sie

01-00–1
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 2007 Mazda3, MAZDASPEED3, Mazda5, Mazda6, MAZDASPEED6, Mazda MX-5,
Mazda RX-8 Service Highlights (3422–1U–06G)
OUTLINE [LF]
ENGINE SPECIFICATION[LF]
id0100e1100300
Specification
Specification
Item 2007MY MX-5 2006MY MX-5
LF (2.0L) LF (2.0L)
MECHANICAL
DOHC-16 valves in-line, 4-
Type ←
cylinder
Combustion chamber Pentroof ←
1,999
Displacement (ml {cc, cu in}) ←
{1,999, 122.0}
87.5 × 83.1
Bore × stroke (mm {in}) ←
{3.44 ×3.27}
Compression ratio 10:8 ←
1,720
Compression pressure (kPa {kgf/cm2, psi} [rpm]) ←
{17.54, 249.5} [300]
Open BTDC (°) 0—30 ←
IN
Valve Close ABDC (°) 32—62 ←
timing Open BBDC (°) 42 ←
EX
Close ATDC (°) 5 ←
0.22—0.28 {0.0087—0.011}
IN ←
[Engine cold]
Valve clearance (mm {in})
0.27—0.33 {0.0107—0.0129}
EX ←
[Engine cold]
LUBRICATION SYSTEM
Type Force-fed type ←
337—591 {3.44—6.03, 49.0—
Oil pressure (reference value)
(kPa {kgf/cm2, psi} [rpm]) 85.8} ←
[oil temperature: 100°C {212°F}]
[3,000]
Type Trochoid gear type ←
Oil pump Relief valve opening
420—520 {4.28—5.30, 60.9—
pressure (kPa {kgf/cm2, psi} ←
75.4}
(reference value)
Type Full-flow, paper element ←
Oil filter 80—120 {0.82—1.22, 11.6—
Bypass pressure (kPa {kgf/cm2, psi}) ←
17.4}
Engine oil Total (dry engine) (L {US qt, lmp qt}) 4.6 {4.9, 4.0} ←
capacity Oil replacement (L {US qt, lmp qt}) 3.9 {4.1, 3.4} ←
(approx.
quantity) Oil and oil filter
(L {US qt, lmp qt}) 4.3 {4.5, 3.8} ←
*1 replacement
(AT, 5MT)
Engine oil Total (dry engine) (L {US qt, lmp qt}) 4.75 {5.02, 4.18} 4.6 {4.9, 4.0}
capacity Oil replacement (L {US qt, lmp qt}) 4.05 {4.28, 3.56} 3.9 {4.1, 3.4}
(approx.
quantity) Oil and oil filter
(L {US qt, lmp qt}) 4.45 {4.70, 3.92} 4.3 {4.5, 3.8}
(AT, 5MT)*2 replacement
Engine oil Total (dry engine) (L {US qt, lmp qt}) 4.85 {5.12, 4.27} ←
capacity Oil replacement (L {US qt, lmp qt}) 4.05 {4.28, 3.56} ←
(approx.
quantity) Oil and oil filter
(L {US qt, lmp qt}) 4.55 {4.81, 4.00} ←
(6MT) replacement
COOLING SYSTEM
Type Water-cooled, Electromotive ←
Coolant capacity (approx. quantity) (L {US qt, lmp qt}) 7.5 {7.9, 6.6} ←
Centrifugal, V-ribbed belt-
Water pump Type ←
driven

01-00–2 Revised 12/2006 (Ref. No. R223/06)

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 2007 Mazda3, MAZDASPEED3, Mazda5, Mazda6, MAZDASPEED6, Mazda MX-5,
Mazda RX-8 Service Highlights (3422–1U–06G)
OUTLINE [LF]
Specification
Item 2007MY MX-5 2006MY MX-5
LF (2.0L) LF (2.0L)
Type Wax, bottom-bypass ←
Opening
(°C {°F}) 80—84 {176—183} ←
Thermostat temperature
Full-open temperature (°C {°F}) 97 {207} ←
Full-open lift (mm {in}) 8.0 {0.31} or more ←
Radiator Type Corrugated fin ←
Cap valve
93.2—122.6 {0.95—1.25,
Cooling system cap opening (kPa {kgf/cm2, psi}) ←
13.5—17.8}
pressure
Type Electric ←
Number of blades 5 ←
Outer
Cooling fan (mm {in}) 360 {14.2} ←
diameter
Fan motor
(W) 120 ←
output
FUEL SYSTEM
Type Hi-ohmic ←
Injector Type of fuel delivery Top-feed ←
Type of drive Voltage ←
Pressure regulator control pressure (kPa {kgf/cm2, psi}) Approx. 390 {3.98, 56.6} ←
Fuel pump type Electric ←
Fuel tank capacity (L {US gal, lmp gal}) 48 {12, 10} ←
Premium unleaded fuel
Fuel type (Anti-knock index) 91 [(R+M)/2 method] or adove ←

Mazda MX-5
(96 RON or more)
EMISSION SYSTEM
EGR type Stepping motor ←
WU-TWC (monolith), TWC
Catalyst form ←
(monolith)
Evaporative emission (EVAP) control system Charcoal canister type ←
Positive crankcase ventilation (PCV) system Closed type ←
CHARGING SYSTEM
Voltage (V) 12 ←
Battery Type and capacity
(A·h) 46B24L (36) ←
(5-hour rate)
Output (V-A) 12-100 ←
Generator Regulated voltage ←
Controlled by PCM
Self diagnosis function ←
IGNITION SYSTEM
Type SEI (Single Electronic Ignition) ←
Spark advance Electronic ←
1—3—4—2 (all cylinders
←
independent firing)
CYLINDER No.
CRANKSHAFT
ENGINE
Ignition system PULLEY
Firing order 1
←
2

Spark plug Type L3G2 18 110, L3Y1 18 110 ←

01-00–3
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 2007 Mazda3, MAZDASPEED3, Mazda5, Mazda6, MAZDASPEED6, Mazda MX-5,
Mazda RX-8 Service Highlights (3422–1U–06G)
OUTLINE [LF]
Specification
Item 2007MY MX-5 2006MY MX-5
LF (2.0L) LF (2.0L)
STARTING SYSTEM
Type Coaxial reduction ←
Starter
Output (kW) 1.4 ←
*1 : Applied VIN (Assumed)

JM1 NC15F*7# 100001—130613

JM1 NC16F*7# 100001—130613
JM1 NC25F*7# 100001—130613
JM1 NC26F*7# 100001—130613
*2
: Applied VIN (Assumed)

JM1 NC15F*7# 130614—

JM1 NC16F*7# 130614—
JM1 NC25F*7# 130614—
JM1 NC26F*7# 130614—
Engine oil specification
Item U.S.A. and CANADA Except U.S.A. and CANADA

SM
Engine oil grade

(ILSAC) (ILSAC)

API SM or ILSAC
Engine oil viscosity 5W–20

End Of Sie

01-00–4 Revised 12/2006 (Ref. No. R223/06)

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 ON-BOARD DIAGNOSTIC [LF]
01-02 ON-BOARD DIAGNOSTIC [LF]
DIAGNOSTIC TEST MODE[LF] . . . . . . . 01-02–1 DTC DETECTION LOGIC AND
Sending Diagnostic Data . . . . . . . . . . . 01-02–2 CONDITIONS[LF] . . . . . . . . . . . . . . . . . . 01-02–8
Sending Freeze Frame Data . . . . . . . . 01-02–3 KOEO/KOER SELF-TEST[LF] . . . . . . . . . 01-02–17
Sending Emission-related KOEO (Key ON, Engine Off)
Malfunction Code . . . . . . . . . . . . . . . . 01-02–4 Self-test . . . . . . . . . . . . . . . . . . . . . . . . 01-02–17
Sending Intermittent Monitoring KOER (Key ON, Engine Running)
System Test Results . . . . . . . . . . . . . 01-02–7 Self-test . . . . . . . . . . . . . . . . . . . . . . . . 01-02–17
Sending Continuous Monitoring PID/DATA MONITOR AND
System Test Results . . . . . . . . . . . . . 01-02–7 RECORD[LF] . . . . . . . . . . . . . . . . . . . . . 01-02–20
DLC-2 Outline . . . . . . . . . . . . . . . . . . . 01-02–8 SIMULATION TEST[LF] . . . . . . . . . . . . . . 01-02–23

End of Toc
DIAGNOSTIC TEST MODE[LF]
NG: ON-BOARD DIAGNOSTIC (ENGINE CONTROL SYSTEM)

id010245100200
• To meet OBD-II regulations, the following diagnostic test modes have been adopted.
Diagnostic test mode Item
Mode 01 Sending diagnostic data (PID data monitor/On-board system readiness test)
Mode 02 Sending freeze frame data
Mode 03 Sending emission-related malfunction code (DTC)
Mode 04 Clearing/resetting emission-related malfunction information
Mode 06 Sending intermittent monitoring system test results (DMTR)
Mode 07 Sending continuous monitoring system test results (pending code)
Mode 08 On-board device control (simulation test, active command mode)
Mode 09 Request vehicle information

Mazda MX-5

01-02–1
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 ON-BOARD DIAGNOSTIC [LF]
Sending Diagnostic Data
PID data monitor
• The PID data monitor items are shown below.
PID data monitor table
Full names Unit
Fuel system loop status Refer to list below.
LOAD %
ECT °C °F
Short term fuel trim %
Long term fuel trim %
MAP kPa
Engine speed rpm
Vehicle speed km/h mph
Spark advance °
IAT °C °F
MAF g/s
Absolute TP %
O2S location No unit
Input voltage from rear HO2S V
Short term fuel trim associated with rear HO2S %
OBD requirement according to vehicle design No unit
Time since engine start s
Distance travelled while MIL is activated km miles
EGR valve control signal %
Purge solenoid valve control signal %
Fuel level %
Number of warm-ups since DTCs cleared No unit
Distance travelled since DTCs cleared km miles
Barometric pressure kPa
Lambda —
Front HO2S output current mA
Estimated catalyst converter temperature °C °F
PCM voltage V
Absolute load value %
Theoretical air/fuel ratio coefficient to calculate target air/fuel ratio No unit
Relative TP %
Ambient air temperature °C °F
TP from TP sensor No.2 %
APP from APP sensor No.1 %
APP from APP sensor No.2 %
Throttle actuator control signal %

Meaning of fuel system loop status

• The following information is displayed on the tester.
— Feedback stops: ECT is lower than the determined feedback zone.
— Feedback operating: HO2S being used for feedback is normal.
— Feedback stops: Open loop due to driving condition
— Feedback stops: Open loop due to detected system fault
— Feedback operating: Malfunction occurred in HO2S (rear) system

01-02–2
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 ON-BOARD DIAGNOSTIC [LF]
On-board system readiness test
• The items supported by the on-board system readiness test are shown below.
Continuous monitoring system
— HO2S heater
— HO2S
— Fuel system
— Misfire
— CCM
Intermittent monitoring system
— HO2S heater
— HO2S
— Catalyst
— EGR system
— Evaporative system
— Engine cooling system
— Cold start emission reduction strategy monitoring

Sending Freeze Frame Data

• The Freeze Frame Data monitor items are shown below.
Freeze frame data monitor table
Full names Unit
DTC that caused required Freeze Frame Data storage No unit
Fuel system loop status Refer to list below.
LOAD %
ECT °C °F
Short term fuel trim %
Long term fuel trim %
MAP kPa
Engine speed rpm

Mazda MX-5
Vehicle speed km/h mph
Spark advance °
IAT °C °F
MAF g/s
Absolute TP %
Time since engine start s
EGR valve control signal %
Purge solenoid valve control signal %
Fuel level %
Number of warm-ups since DTCs cleared No unit
Distance travelled since DTCs cleared km miles
Barometric pressure kPa
Estimated catalyst converter temperature °C °F
PCM voltage V
Absolute load value %
Theoretical air/fuel ratio coefficient to calculate target air/fuel ratio No unit
Relative TP %
Ambient air temperature °C °F
TP from TP sensor No.2 %
APP from APP sensor No.1 %
APP from APP sensor No.2 %
Throttle actuator control signal %

Meaning of fuel system loop status

• The following information is displayed on the tester.
— Feedback stops: ECT is lower than the determined feedback zone.
— Feedback operating: HO2S being used for feedback is normal.
— Feedback stops: Open loop due to driving condition
— Feedback stops: Open loop due to detected system fault
— Feedback operating: Malfunction occurred in HO2S (rear) system

01-02–3
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 ON-BOARD DIAGNOSTIC [LF]
Sending Emission-related Malfunction Code
• The DTCs are shown below.

×: Applicable
N/A: Not applicable
DTC No. Self-test Memory
Condition MIL DC Monitor item
07MY 06MY type*3 function
B1342 ← PCM malfunction OFF N/A N/A C, O N/A
P0011 ← CMP timing over-advanced ON 1 CCM C, R ×
P0012 ← CMP timing over-retarded ON 2 CCM C, R ×
P0016 ← CKP-CMP correlation ON 2 CCM C ×
Front HO2S heater control circuit
P0030 ← ON 2 HO2S heater C, O, R ×
problem
P0031 ← Front HO2S heater circuit low input ON 2 HO2S heater C, O, R ×
P0032 ← Front HO2S heater circuit high input ON 2 HO2S heater C, O, R ×
P0037 ← Rear HO2S heater circuit low input ON 2 HO2S heater C, O, R ×
P0038 ← Rear HO2S heater circuit high input ON 2 HO2S heater C, O, R ×
Manifold absolute pressure/atmospheric
P0069 ← ON 2 CCM C ×
pressure correlation
MAF sensor circuit range/performance
P0101 ← ON 2 CCM C ×
problem
P0102 ← MAF sensor circuit low input ON 1 CCM C, O, R ×
P0103 ← MAF sensor circuit high input ON 1 CCM C, O, R ×
P0107 ← MAP sensor circuit low input ON 1 CCM C, O, R ×
P0108 ← MAP sensor circuit high input ON 1 CCM C, O, R ×
IAT sensor circuit range/performance
P0111 ← ON 2 CCM C ×
problem
P0112 ← IAT sensor circuit low input ON 1 CCM C, O, R ×
P0113 ← IAT sensor circuit high input ON 1 CCM C, O, R ×
Engine coolant temperature circuit range/ Engine cooling
P0116 ← ON 1 C ×
performance system
Engine cooling
P0117 ← ECT sensor circuit low input ON 1 C, O, R ×
system
Engine cooling
P0118 ← ECT sensor circuit high input ON 1 C, O, R ×
system
P0122 ← TP sensor No.1 circuit low input ON 1 CCM C, O, R ×
P0123 ← TP sensor No.1 circuit high input ON 1 CCM C, O, R ×
Excessive time to enter closed loop fuel Engine cooling
P0125 ← ON 2 C ×
control system
Engine cooling
P0126 ← ON 2 C ×
system
Coolant thermostat stuck open
Engine cooling
P0128 ← ON 2 C ×
system
P0130 ← Front HO2S circuit problem ON 2 HO2S C, O, R ×
P0131 ← Front HO2S circuit low input ON 2 HO2S C, O, R ×
P0132 ← Front HO2S circuit high input ON 2 HO2S C, O, R ×
P0133 ← Front HO2S circuit problem ON 2 HO2S C ×
P0134 ← Front HO2S no activity detected ON 2 HO2S C, R ×
P0137 ← Rear HO2S circuit low input ON 2 HO2S C, O, R ×
P0138 ← Rear HO2S circuit high input ON 2 HO2S C, O, R ×
P0139 ← Rear HO2S circuit problem ON 2 HO2S C ×
P0140 ← Rear HO2S no activity detected ON 2 HO2S C, R ×
P0222 ← TP sensor No.2 circuit low input ON 1 CCM C, O, R ×
P0223 ← TP sensor No.2 circuit high input ON 1 CCM C, O, R ×
Flash/
P0300 ← Random misfire detected 1 or 2 Misfire C, R ×
ON
Flash/
P0301 ← Cylinder No.1 misfire detected 1 or 2 Misfire C, R ×
ON

01-02–4
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 ON-BOARD DIAGNOSTIC [LF]
DTC No. Self-test Memory
Condition MIL DC Monitor item
07MY 06MY type*3 function
Flash/
P0302 ← Cylinder No.2 misfire detected 1 or 2 Misfire C, R ×
ON
Flash/
P0303 ← Cylinder No.3 misfire detected 1 or 2 Misfire C, R ×
ON
Flash/
P0304 ← Cylinder No.4 misfire detected 1 or 2 Misfire C, R ×
ON
P0327 ← KS circuit low input ON 1 CCM C, O, R ×
P0328 ← KS circuit high input ON 1 CCM C, O, R ×
P0335 ← CKP sensor circuit problem ON 1 CCM C ×
P0340 ← CMP sensor circuit problem ON 1 CCM C ×
P0401 ← EGR flow insufficient detected ON 2 EGR system C, R ×
EGR valve (stepping motor) circuit
P0403 ← ON 2 CCM C, O, R ×
problem
Warm up catalyst system efficiency
P0421 ← ON 2 Catalyst C ×
below threshold
Evaporative emission control system Evaporative
P0441 ← ON 2 C, R ×
incorrect purge flow system
Evaporative emission control system leak Evaporative
P0442 ← ON 2 C, R ×
detected (small leak) system
P0443 ← Purge solenoid valve circuit problem ON 2 CCM C, O, R ×
Change over valve (COV) (EVAP system
P0446 ← ON 2 CCM C, R ×
leak detection pump) stuck close
Evaporative emission control system leak Evaporative
P0455 ← ON 2 C, R ×
detected (gross leak) system
Evaporative emission control system leak Evaporative
P0456*1 ← ON 2 C, R ×
detected (very small leak) system

Mazda MX-5
Fuel gauge sender unit range/
P0461 ← ON 2 CCM C ×
performance problem
P0462 ← Fuel gauge sender unit circuit low input ON 2 CCM C, O, R ×
P0463 ← Fuel gauge sender unit circuit high input ON 2 CCM C, O, R ×
Cooling fan relay No.1 control circuit
P0480 ← OFF 1 Other C, O, R ×
malfunction
Cooling fan relay No.2 control circuit
P0481 ← OFF 1 Other C, O, R ×
malfunction
Cooling fan relay No.3 control circuit
P0482 ← OFF 1 Other C, O, R ×
malfunction
P0500*4 ← VSS circuit problem ON 2 CCM C ×
P0505 ← Idle speed control system problem OFF N/A N/A R N/A
Idle speed control system RPM lower
P0506 ← ON 2 CCM C ×
than expected
Idle speed control system RPM higher
P0507 ← ON 2 CCM C ×
than expected
Cold start
emission
Cold start idle air control system
P050A N/A ON 2 reduction C, R ×
performance
strategy
monitoring
Cold start
emission
P050B N/A Cold start ignition timing performance ON 2 reduction C, R ×
strategy
monitoring
P0550 ← PSP switch circuit malfunction ON 2 CCM C ×
P0564 ← Cruise control switch circuit malfunction OFF 1 Other C ×
P0571 ← Brake switch circuit problem OFF 1 Other C ×
P0601 ← PCM memory check sum error ON 1 CCM C, O, R ×
P0602 ← PCM programming error ON 1 CCM C, O, R ×

01-02–5
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 ON-BOARD DIAGNOSTIC [LF]
DTC No. Self-test Memory
Condition MIL DC Monitor item
07MY 06MY type*3 function
PCM random access memory (RAM)
P0604 ← ON 1 CCM C, O, R ×
error
P0606 ← PCM processor ON 1 CCM C, O, R ×
P0610 ← PCM vehicle options error ON 1 CCM C, O, R ×
Throttle actuator control circuit range/
P0638 ← ON 1 CCM C ×
performance problem
Variable intake air solenoid valve circuit
P0661 ← OFF 1 Other C, O, R ×
low input
Variable intake air solenoid valve circuit
P0662 ← OFF 1 Other C, O, R ×
high input
P0703 ← Brake switch input circuit problem ON 2 CCM C ×
Clutch pedal position (CPP) switch input
P0704*2 ← ON 2 CCM C ×
circuit problem
P0850*2 ← Neutral switch input circuit problem ON 2 CCM C ×
P1260 ← Immobilizer system problem OFF 1 Other C, O N/A
P2088 ← Oil control valve (OCV) circuit low ON 1 CCM C, O, R ×
P2089 ← Oil control valve (OCV) circuit high ON 1 CCM C, O, R ×
P2096 ← Target A/F feedback system too lean ON 2 Fuel system C ×
P2097 ← Target A/F feedback system too rich ON 2 Fuel system C ×
Throttle actuator circuit range/
P2101 ← ON 1 CCM C, R ×
performance
Throttle actuator control module
P2107 ← ON 1 CCM C, R ×
processor error
Throttle actuator control module
P2108 ← ON 1 CCM C, R ×
performance error
TP sensor minimum stop range/
P2109 ← ON 1 CCM C, R ×
performance problem
Throttle actuator control system range/
P2112 ← ON 1 CCM C, R ×
performance problem
Throttle actuator control throttle body
P2119 ← ON 2 CCM C, R ×
range/performance problem
P2122 ← APP sensor No.1 circuit low input ON 1 CCM C, O, R ×
P2123 ← APP sensor No.1 circuit high input ON 1 CCM C, O, R ×
P2127 ← APP sensor No.2 circuit low input ON 1 CCM C, O, R ×
P2128 ← APP sensor No.2 circuit high input ON 1 CCM C, O, R ×
TP sensor No.1/No.2 voltage correlation
P2135 ← ON 1 CCM C, O, R ×
problem
APP sensor No.1/No.2 voltage
P2138 ← ON 1 CCM C, O, R ×
correlation problem
P2177 ← Fuel system too lean at off idle ON 2 Fuel system C, R ×
P2178 ← Fuel system too rich at off idle ON 2 Fuel system C, R ×
P2187 ← Fuel system too lean at idle ON 2 Fuel system C, R ×
P2188 ← Fuel system too rich at idle ON 2 Fuel system C, R ×
P2195 ← Front HO2S signal stuck lean ON 2 HO2S C ×
P2196 ← Front HO2S signal stuck rich ON 2 HO2S C ×
P2228 ← BARO sensor circuit low input ON 1 CCM C, O, R ×
P2229 ← BARO sensor circuit high input ON 1 CCM C, O, R ×
EVAP system leak detection pump motor
P2401 ← ON 2 CCM C, R ×
circuit low
EVAP system leak detection pump motor
P2402 ← ON 2 CCM C, R ×
circuit high
EVAP system leak detection pump sense
P2404 ← ON 2 CCM C, R ×
circuit problem
EVAP system leak detection pump sense
P2405 ← ON 2 CCM C, R ×
circuit low input
EVAP system leak detection pump sense
P2407 ← ON 2 CCM C, R ×
circuit intermittent

01-02–6
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 ON-BOARD DIAGNOSTIC [LF]
DTC No. Self-test Memory
Condition MIL DC Monitor item
07MY 06MY type*3 function
P2502 ← Charging system voltage problem OFF 1 Other C, R ×
P2503 ← Charging system voltage low OFF 1 Other C, R ×
P2504 ← Charging system voltage high OFF 1 Other C, R ×
P2507 ← PCM B+ voltage low ON 1 CCM C, O, R ×
PCM internal engine off timer
P2610 ← ON 2 CCM C ×
performance
*1
: California emission regulation applicable model
*2 : MT
*3
: C: CMDTC self-test, O: KOEO self-test, R: KOER self-test
*4
: With ABS/DSC or MT without ABS/DSC

Sending Intermittent Monitoring System Test Results

• The items supported by the sending intermittent monitoring system are shown below.
TEST ID Description Related system
10:01:80 HO2S (Front) lean-to-rich response time (calculated)
10:01:81 HO2S (Front) rich-to-lean response time (calculated)
10:01:82 HO2S (Front) lean-to-rich response time (calculated)
10:01:83 HO2S (Front) rich-to-lean response time (calculated) HO2S
10:02:03 Low HO2S (Rear) voltage for switch time calculation (constant)
10:02:04 High HO2S (Rear) voltage for switch time calculation (constant)
10:02:05 HO2S (Rear) rich-to-lean response time (calculated)
10:21:80 HO2S (Front) and HO2S (Rear) switching time ratio Catalyst
10:31:83 EGR pressure variation EGR
10:3A:80 EVAP system leak detection pump large leak check

Mazda MX-5
10:3B:80 EVAP system leak detection pump small leak check
EVAP
10:3C:80*1 EVAP system leak detection pump very small leak check
10:3D:80 Purge flow monitor
10:A2:0B Cylinder No.1 average misfire counts for last 10 DC
10:A2:0C Cylinder No.1 misfire counts for last/current DC
10:A3:0B Cylinder No.2 average misfire counts for last 10 DC
10:A3:0C Cylinder No.2 misfire counts for last/current DC
Misfire
10:A4:0B Cylinder No.3 average misfire counts for last 10 DC
10:A4:0C Cylinder No.3 misfire counts for last/current DC
10:A5:0B Cylinder No.4 average misfire counts for last 10 DC
10:A5:0C Cylinder No.4 misfire counts for last/current DC
10:E1:80 Heat radiation ratio
Thermostat
10:E1:81 Engine coolant temperature

*1 : California emission regulation applicable model

Sending Continuous Monitoring System Test Results

• These appear when a problem is detected in a monitored system.

1-drive cycle type

• If any problems are detected in the first drive cycle, pending codes will be stored in the PCM memory, as well
as DTCs.
• After pending codes are stored, if the PCM determines that the system is normal in any future drive cycle, the
PCM deletes the pending codes.

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 ON-BOARD DIAGNOSTIC [LF]
2-drive cycle type
• The code for a failed system is stored in the PCM memory in the first drive cycle. If the problem is not found in
the second drive cycle, the PCM determines that the system returned to normal or the problem was mistakenly
detected, and deletes the pending code when the ignition switch is turned to the ON position in the next drive
cycle. If the problem is found in the second drive cycle too, the PCM determines that the system has failed, and
stores the pending codes, and the DTCs.
• After pending codes are stored, if the PCM determines that the system is normal in any future drive cycle, the
PCM deletes the pending codes.

DLC-2 Outline
• The DLC-2 located in the driver compartment is a service connector defined by OBD-II regulations.
• The following are functions for each terminal.
Terminal name Function
B+ Battery positive voltage
CAN_L Serial communication Lo terminal DLC-2
CAN_H Serial communication Hi terminal
GND1 Ground (chassis)
GND2 Ground (signal) B+ CAN_L

CAN_H GND2 GND1

End Of Sie

amxuun0000001

DTC DETECTION LOGIC AND CONDITIONS[LF]

id010245100300
B1342 PCM malfunction
• Malfunction in the PCM internal circuit.
P0011 CMP Timing over-advanced
• The actual valve timing is over-advanced by 15 ° from the target valve timing for specified period when the oil
control valve (OCV) is controlled in the maximum valve timing retard condition.
Monitoring condition
— Engine coolant temperature is above 63 °C {145.4 °F}
P0012 CMP timing over-retarded
• Actual valve timing is over-retarded by 10 ° from the target valve timing for specified period when the oil control
valve (OCV) system control is within the feedback range.
Monitoring condition
— Engine coolant temperature is above 63 °C {145.4 °F}
P0016 CKP-CMP correlation
• The PCM monitors the input pulses from the CKP sensor and CMP sensor. If the input pulse pick-up timing do
not match each other, the PCM determines that the camshaft position does not coincide with the crankshaft
position.
P0030 Front HO2S heater control circuit problem
• The PCM monitors the front HO2S impedance when under the front HO2S heater control for 200 s. If the
impedance is more than 44 ohms, the PCM determines that there is a front HO2S heater control circuit
problem.
P0031 Front HO2S heater circuit low input
• The PCM monitors the front HO2S heater control voltage when the PCM turns the front HO2S heater off. If the
control voltage exceeds 50% of the battery voltage, the PCM determines that the front HO2S heater control
circuit voltage is low.
P0032 Front HO2S heater circuit high input
• The PCM monitors the front HO2S heater control voltage when the PCM turns the front HO2S heater on. If the
control voltage is less than 50% of the battery voltage, the PCM determines that the front HO2S heater control
circuit voltage is high.
P0037 Rear HO2S heater circuit low input
• The PCM monitors the rear HO2S heater control voltage when the PCM turns the rear HO2S heater off. If the
control voltage exceeds 25% of the battery voltage, the PCM determines that the rear HO2S heater control
circuit voltage is low.
P0038 Rear HO2S heater circuit high input
• The PCM monitors the rear HO2S heater control voltage when the PCM turns the rear HO2S heater on. If the
control voltage is less than 57% of the battery voltage, the PCM determines that the rear HO2S heater control
circuit voltage is high.

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P0069 Manifold absolute pressure/atmospheric pressure correlation
• PCM monitors differences between intake manifold vacuum and atmospheric pressure. If the difference is
below –12 kPa {–90 mmHg, –3.5 inHg} or above 12 kPa {90 mmHg, 3.5 inHg} when the following conditions
are met, the PCM determines that there is a MAP sensor performance problem.
MONITORING CONDITION
— 12—15 s from when ignition switch is turned off.
— Intake air temperature is above -10°C {14 °F}.
— Engine coolant temperature is above 70°C {158°F}.
P0101 MAF sensor circuit range/performance problem
• PCM monitors mass intake air flow amount when the engine is running.
— If the mass intake air flow amount is above 37 l/s for 5 s and the engine speed is below 2,000 rpm with the
engine running, the PCM determines that the detected mass intake air flow amount is too high.
— If the mass intake air flow amount is below 4.4—59 l/s (The value depends on engine speed.) for 5 s and
the engine speed is above 1,000 rpm with the engine running and the throttle opening angle above 50 %,
the PCM determines that detected the mass intake air flow amount is too low.
P0102 MAF sensor circuit low input
• The PCM monitors input voltage from the MAF sensor when the engine running. If the input voltage is below
0.21 V, the PCM determines that the MAF circuit has a malfunction.
P0103 MAF sensor circuit high input
• The PCM monitors the input voltage from the MAF sensor when the engine running. If the input voltage is
above 4.9 V, the PCM determines that the MAF circuit has a malfunction.
P0107 MAP sensor circuit low input
• The PCM monitors the input voltage from the MAP sensor when intake air temperature is above –10 °C {14
°F}. If the input voltage is below 0.1 V, the PCM determines that the MAP sensor circuit has a malfunction.
MONITORING CONDITIONS
— Calculated load: 13—32 %
P0108 MAP sensor circuit high input
• The PCM monitors the input voltage from the MAP sensor when intake air temperature is above –10 °C {14
°F}. If input the voltage is above 4.9 V, the PCM determines that the MAP sensor circuit has a malfunction.
MONITORING CONDITIONS

Mazda MX-5
— Calculated load: 13—32 %
P0111 IAT sensor circuit range/performance problem
• If intake air temperature is higher than engine coolant temperature by 18 °C {32.4 °F} for 1.2 s with ignition
switch on*, the PCM determines that there is a intake air temperature sensor circuit range/performance
problem.
*: Ignition switch on when 6 h or more has passed since the previous ignition switch off
P0112 IAT sensor circuit low input
• The PCM monitors the IAT sensor signal. If the PCM detects that the IAT sensor voltage is below 0.16 V, the
PCM determines that the IAT sensor circuit has a malfunction.
P0113 IAT sensor circuit high input
• The PCM monitors the IAT sensor signal. If the PCM detects that the IAT sensor voltage is above 4.84 V, the
PCM determines that IAT sensor circuit has a malfunction.
P0116 Engine coolant temperature circuit range/performance
• The PCM monitors the maximum value and minimum value of engine coolant temperature when the engine is
started and 5 min have been passed after leaving the vehicle 6 h or more. If difference between maximum and
minimum values of engine coolant temperature is below 6 °C {10.8 °F} the PCM determines that there is an
ECT circuit range/performance problem.
P0117 ECT sensor circuit low input
• The PCM monitors the ECT sensor signal at PCM terminal 2AH. If the PCM detects the ECT sensor voltage
below 0.2 V, the PCM determines that the ECT sensor circuit has malfunction.
P0118 ECT sensor circuit high input
• The PCM monitors the ECT sensor signal at PCM terminal 2AH. If the PCM detects the ECT sensor voltage is
above 4.58 V, the PCM determines that the ECT sensor circuit has malfunction.
P0122 TP sensor No.1 circuit low input
• If the PCM detects that the TP sensor No.1 voltage is below 0.1 V while the engine is running, the PCM
determines that the TP sensor No.1 circuit has a malfunction.
P0123 TP sensor No.1 circuit high input
• If the PCM detects the TP sensor No.1 voltage is to be above 4.9 V after ignition switch to the ON position,
PCM determines that TP sensor No.1 circuit has a malfunction.
P0125 Excessive time to enter closed loop fuel control
• The PCM monitors the ECT sensor signal at PCM terminal 2AH after engine is started while the engine is cold.
If the engine coolant temperature does not reach the expected temperature for specified period, the PCM
determines that it has taken an excessive amount of time for the engine coolant temperature to reach the
temperature necessary to start closed-loop fuel control.

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 ON-BOARD DIAGNOSTIC [LF]
P0126 Coolant thermostat stuck open
• If the ECT signal never exceeds 71 °C {160 °F} after engine start for specified period, PCM determines that the
coolant thermostat is stuck open.
MONITORING CONDITIONS
— IAT: above –10 °C {14 °F}
— Vehicle speed: over 6 km/h {3.7 mph}
P0128 Coolant thermostat stuck open
• PCM monitors MAF, IAT, VSS and EAT signals and calculate radiator’s heat radiation ratio while following
monitoring conditions are met. If calculated value exceeds threshold, PCM determines that the coolant
thermostat is stuck open.
MONITORING CONDITIONS
— IAT: above -10°C {14 °F}
— ECT at engine start: below 36 °C {97 °F}
— Difference between ECT at engine start and minimum IAT: below 6 °C {10.8 °F}
— Vehicle speed: over 30 km/h {18.6 mph}
P0130 Front HO2S circuit problem
• The PCM monitors the front HO2S impedance when under the front HO2S heater control. If the impedance is
more than 500 ohms, the PCM determines that there is a front HO2S circuit problem.
P0131 Front HO2S circuit low input
• The PCM monitors the input voltage from the front HO2S and the front HO2S output current when the engine is
running. If the input voltage is less than 1.8 V or the output current is less than –5 mA, the PCM determines
that the front HO2S circuit voltage is low.
P0132 Front HO2S circuit high input
• The PCM monitors the input voltage from the front HO2S and the front HO2S output current when the engine is
running. If the input voltage is more than 3.8 V or the output current is more than 5 mA, the PCM determines
that the front HO2S circuit voltage is high.
P0133 Front HO2S circuit problem
• The PCM monitors the peak differential value of oxygen sensor signal after A/F fluctuation being provided when
the following conditions are met. If the peak differential value is lower than the threshold value.
• The PCM determines that front HO2S circuit is slow.
MONITORING CONDITIONS
— HO2S heater, HO2S, and TWC Repair Verification Drive Mode
— Following conditions are met:
• Front HO2S heater monitor is completed.
• Fuel system loop status is closed loop fuel control.
— Engine speed: 1,750—3,500 rpm
— Charging efficiency: 25—63 % (at engine speed: 2,500 rpm)
— Intake air volume: 5—40 g/s
— Engine coolant temperature above 70 °C {158 °F}
P0134 Front HO2S no activity detected
• The PCM monitors the front HO2S element impedance when the following conditions are met. If the front
HO2S element impedance is 80 ohms or more, the PCM determines that front HO2S is not activated.
MONITORING CONDITIONS
— HO2S, HO2S heater and TWC Repair Verification Drive Mode
— Following conditions are met
• Time from engine start is above 30 s (ECT when engine start is 20 °C {68 °F}).
P0137 Rear HO2S circuit low input
• The PCM monitors input voltage from rear HO2S. If the input voltage from the rear HO2S is below 0.1 V for
35.2 s the PCM determines that circuit input is low.
MONITORING CONDITIONS
— HO2S, HO2S heater and TWC repair verification drive mode
— Following conditions are met.
• Engine speed is above 1,500 rpm.
• Engine coolant temperature is above 70 °C {158 °F}.
• Fuel injector control in rear HO2S closed loop control.
• The PCM monitors the input voltage from the rear HO2S when the following conditions are met. Under the
following monitoring conditions, if the input voltage from the rear HO2S does not even exceed 0.1 V though
the short term fuel trim is controlled up to 20.5 % for 9.6 s, the PCM determines that sensor circuit input is low.
MONITORING CONDITIONS
— HO2S, HO2S heater and TWC repair verification drive mode
— Following conditions are met for above 20.8 s.
• Engine speed is above 1,500 rpm.
• Engine coolant temperature is above 70 °C {158 °F}.

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P0138 Rear HO2S circuit high input
• The PCM monitors input voltage from rear HO2S. If the input voltage from the rear HO2S sensor is above 1.2
V for 0.8 s, the PCM determines that circuit input is high.
P0139 Rear HO2S circuit problem
• The PCM monitors the rich (0.4 V) to lean (0.3 V) response time of the rear HO2S. The PCM measures the
response time when the following conditions are met. The PCM determines a rear HO2S response
deterioration malfunction when the measured response time is more than the threshold value (80 ms) five
consecutive times.
MONITORING CONDITIONS
— PCM Adaptive Memory Production, HO2S heater, HO2S, and TWC Repair Verification Drive Mode
— Following conditions are met:
• During deceleration fuel cut
• Engine speed is above 500 rpm.
• Engine coolant temperature is above 70 °C {158 °F}.
• Rear HO2S output voltage ia above 0.4 V.
• The PCM monitors for a time-out malfunction (when rear HO2S remains above 0.3 V for longer than a
specified period of time during fuel cut control). The PCM measures the amount of time from when the following
conditions are met until the rear HO2S output voltage drops below 0.3 V. The PCM determines a rear HO2S
time-out malfunction when the detected time is more than the threshold value (6 s) three consecutive times.
MONITORING CONDITIONS
— PCM Adaptive Memory Production, HO2S heater, HO2S, and TWC Repair Verification Drive Mode
— Following conditions are met:
• During deceleration fuel cut
• Engine speed is above 500 rpm.
• Engine coolant temperature is above 70 °C {158 °F}.
• Rear HO2S is activated (more than 0.55 V)
P0140 Rear HO2S no activity detected
• The PCM monitors the input voltage from the rear HO2S when the following conditions are met. Under the
following monitoring conditions, if the input voltage from the rear HO2S does not even exceed 0.55 V though
the short term fuel trim is controlled up to 20.5% for 9.6 s, the PCM determines that sensor circuit is not

Mazda MX-5
activated.
MONITORING CONDITIONS
— HO2S, HO2S heater and TWC repair verification drive mode
— Following conditions are met for above 20.8 s
• Engine speed is above 1,500 rpm.
• Engine coolant temperature is above 70 °C {158 °F}.
— Rear HO2S voltage is above 0.1 V
P0222 TP sensor No.2 circuit low input
• If PCM detects TP sensor No.2 voltage is to be below 0.1 V after the ignition switch to the ON position, the
PCM determines that TP circuit has a malfunction.
P0223 TP sensor No.2 circuit high input
• If the PCM detects the TP sensor No.2 voltage is to be above 4.9 V after the ignition switch to the ON position,
the PCM determines that the TP circuit has a malfunction.
P0300 Random misfire detected
• The PCM monitors CKP sensor input signal interval time. The PCM calculates change of interval time for each
cylinder. If change of interval time exceeds preprogrammed criteria, the PCM detects misfire in the
corresponding cylinder. While the engine is running, the PCM counts number of misfires that occurred at 200
crankshaft revolutions and 1,000 crankshaft revolutions and calculates misfire ratio for each crankshaft
revolution. If the ratio exceeds the preprogrammed criteria, the PCM determines that a misfire, which can
damage catalytic converter or affect emission performance, has occurred.
P0301, P0302, P0303, P0304 Cylinder No.1, No.2, No.3, No.4 misfire detected
• The PCM monitors CKP sensor input signal interval time. The PCM calculates the change of interval time for
each cylinder. If the change of interval time exceeds the preprogrammed criteria, the PCM detects a misfire in
the corresponding cylinder. While the engine is running, the PCM counts number of misfires that occurred at
200 crankshaft revolutions and 1,000 crankshaft revolutions and calculates misfire ratio for each
crankshaft revolution. If the ratio exceeds the preprogrammed criteria, the PCM determines that a misfire,
which can damage catalytic converter or affect emission performance, has occurred.
P0327 KS circuit low input
• The PCM monitors input signal from the KS when the engine is running. If the input voltage is below 0.01 V the
PCM determines that the KS circuit has a malfunction.
P0328 KS circuit high input
• The PCM monitors the input signal from the KS when the engine is running. If the input voltage is above 4.58 V
the PCM determines that KS circuit has a malfunction.

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P0335 CKP sensor circuit problem
• If the PCM does not receive the input voltage from the CKP sensor for 4.2 s while the MAF is 1.95 g/s {0.25 lb/
min.} or above, the PCM determines that the CKP sensor circuit has a malfunction.
• If a malfunction is detected in the input pulse pattern from the CKP sensor.
P0340 CMP sensor circuit problem
• The PCM monitors the input voltage from the CMP sensor when the engine is running. If the PCM does not
receive the input voltage from the CMP sensor while the PCM receives the input signal from the CKP sensor,
the PCM determines that the CMP circuit has a malfunction.
• If a malfunction is detected in the input pulse pattern from the CMP sensor.
P0401 EGR flow insufficient detected
• PCM monitors difference in intake manifold pressures when EGR is operated and when it is stopped. If the
difference is too small, PCM determines that EGR flow insufficient.
P0403 EGR valve (stepping motor) circuit problem
• The PCM monitors the EGR valve control signal voltage and current. If the following conditions are met, the
PCM determines that there is the EGR control circuit problem.
— The PCM turns the EGR valve off, but the voltage of the EGR valve control signal remains low.
— The PCM turns the EGR valve on, but the current of the EGR valve control signal remains high.
P0421 Warm up catalyst system efficiency below threshold
• PCM compares number of front HO2S and rear HO2S inversions for a predetermined time. PCM monitors
number of inversions rear side performs while front side inverts for a specified number of times when the
following monitoring conditions are met, PCM detects inversion ratio. If inversion ratio is below threshold, PCM
determines that catalyst has deteriorated.
MONITORING CONDITION
— Calculated TWC temperature: more than 400 °C {752 °F}
— Engine speed: 1,500—3,000 rpm
— LOAD: 15—48 % (at engine speed 2,000 rpm)
P0441 Evaporative emission control system incorrect purge flow
• PCM measures the purge line pressure, which is the vacuum when a following condition. If vacuum between
charcoal canister and intake manifold does not reach the specified, PCM determines that the EVAP system has
clogging.
MONITORING CONDITION
— Engine speed: 1,500—3,500 rpm
— Throttle opening angle:11—20 %
— Vehicle speed: 69.5—136 km/h {43.2—84.5 mph} [MT]/34.5—136 km/h {21.4—84.5 mph} [AT]
P0442 Evaporative emission control system leak detected (small leak)
• PCM measures the pump load current (EVAP line pressure) when the specified period has passed after EVAP
system is sealed when monitoring conditions are met. If the load does not reach the reference current value
within the specified period, PCM determines that the EVAP system has small leak.
MONITORING CONDITION
— The ignition switch is turned off.
— IAT: 4.4—35 °C {40—95 °F}
— Battery voltage: 11 V or above
— Atmospheric pressure: 72.2 kPa {542 mmHg, 21.3 inHg} or above
— Fuel tank level: 15—85%
— Time from engine off: 5 h 10 min.
P0443 Purge solenoid valve circuit problem
• The PCM monitors the purge solenoid valve control signal voltage and current. If the following conditions are
met, the PCM determines that there is the purge solenoid valve control circuit problem.
— The PCM turns the purge solenoid valve off, but the voltage of the purge solenoid valve control signal
remains low.
— The PCM turns the purge solenoid valve on, but the current of the purge solenoid valve control signal
remains high.
P0446 Change over valve (COV) (EVAP system leak detection pump) stuck close
• The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. When
the decrease in pump load current is less than the specification after the reference current value has been
obtained, the PCM determines change over valve (COV) in EVAP system leak detection pump has a
malfunction.

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P0455 Evaporative emission control system leak detected (gross leak)
• PCM measures the pump load current (EVAP line pressure) when the specified period has passed after EVAP
system is sealed when monitoring conditions are met. If the load does not reach the reference current value
within the specified period, PCM determines that the EVAP system has gross leak.
MONITORING CONDITION
— The ignition switch is turned off.
— IAT: 4.4—35 °C {40—95 °F}
— Battery voltage: 11 V or above
— Atmospheric pressure: 72.2 kPa {542 mmHg, 21.3 inHg} or above
— Fuel tank level: 15—85%
— Time from engine off: 5 h 10 min.
P0456 Evaporative emission control system leak detected (very small leak)
• PCM measure the pump load current (EVAP line pressure) when a specified period has passed after EVAP
system is sealed when monitoring conditions are met. If the load does not reach the reference load value or
rate of the load increase lower than the specified within a specified period, PCM determines that the EVAP
system has very small leak.
MONITORING CONDITION
— The ignition switch is turned off.
— IAT: 4.4—35 °C {40—95 °F}
— Battery voltage: 11 V or above
— Atmospheric pressure: 72.2 kPa {542 mmHg, 21.3 inHg} or above
— Fuel tank level: 15—85%
— Time from engine off: 5 h 10 min.
P0461 Fuel gauge sender unit range/performance problem
• The PCM monitors the fuel tank level difference before and after the PCM-calculated fuel consumption has
reached more than 25 L {26.4 US qt, 22 Imp qt}. If the difference is less than 5%, the PCM determines that
there is a fuel gauge sender unit range/performance problem.
P0462 Fuel gauge sender unit circuit low input
• The PCM monitors the fuel level signal and fuel gauge sender unit output voltage from the instrument cluster. If
the PCM detects a fuel level or fuel gauge sender unit output voltage is too low, the PCM determines that the

Mazda MX-5
fuel gauge sender unit circuit has a malfunction.
P0463 Fuel gauge sender unit circuit high input
• The PCM monitors the fuel level signal and fuel gauge sender unit output voltage from the instrument cluster. If
the PCM detects a fuel level or fuel gauge sender unit output voltage is too high, the PCM determines that the
fuel gauge sender unit circuit has a malfunction.
P0480 Cooling fan relay No.1 control circuit malfunction
• The PCM monitors the cooling fan relay No.1 control signal voltage and current. If the following conditions are
met, the PCM determines that there is the cooling fan relay No.1 control circuit problem.
— The PCM turns the cooling fan relay No.1 off, but the voltage of the cooling fan relay No.1 control signal
remains low.
— The PCM turns the cooling fan relay No.1 on, but the current of the cooling fan relay No.1 control signal
remains high.
P0481 Cooling fan relay No.2 control circuit malfunction
• The PCM monitors the cooling fan relay No.2 control signal voltage and current. If the following conditions are
met, the PCM determines that there is the cooling fan relay No.2 control circuit problem.
— The PCM turns the cooling fan relay No.2 off, but the voltage of the cooling fan relay No.2 control signal
remains low.
— The PCM turns the cooling fan relay No.2 on, but the current of the cooling fan relay No.2 control signal
remains high.
P0482 Cooling fan relay No.3 control circuit malfunction
• The PCM monitors the cooling fan relay No.3 control signal voltage and current. If the following conditions are
met, the PCM determines that there is the cooling fan relay No.3 control circuit problem.
— The PCM turns the cooling fan relay No.3 off, but the voltage of the cooling fan relay No.3 control signal
remains low.
— The PCM turns the cooling fan relay No.3 on, but the current of the cooling fan relay No.3 control signal
remains high.

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P0500 VSS circuit problem
With ABS/DSC
• If an error in the wheel speed signal from the ABS/DSC HU/CM is detected by CAN when the following
conditions are met:
— Neutral switch and clutch pedal position switch are OFF
— Load is above 40 %
— Engine speed is 2,000 rpm or above
— Brake switch is OFF
— Shift lever position (P, N, R position) (AT)
MT without ABS/DSC
• Vehicle speed signal from vehicle speed sensor is below 3.7 km/h {2.3 mph} when the following conditions
are met:
— Neutral switch and clutch pedal position switch are OFF
— Load is above 40 %
— Engine speed is 2,000 rpm or above
— Brake switch is OFF
P0505 Idle speed control system problem
• The PCM cannot control idle speed toward target idle speed while KOER self test.
P0506 Idle speed control system RPM lower than expected
• Actual idle speed is lower than expected by 100 rpm for 14 s, when brake pedal is depressed (brake switch is
on) and steering wheel is held straight ahead (power steering pressure (PSP) switch is off).
P0507 Idle speed control system RPM higher than expected
• Actual idle speed is higher than expected by 200 rpm for 14 s, when the brake pedal is depressed (brake
switch is on) and steering wheel is held straight ahead (power steering pressure (PSP) switch is off).
P050A Cold start idle air control system performance
• Actual idle speed is lower than expected by 100 rpm for 8.4 s when the target idle speed correction value for
cold start is above 0 rpm or ignition retard value is above 10 ° CA.

Note
• If atmospheric pressure is less than 72.3 kPa {542 mmHg, 21.3 inHg} or intake air temperature is below
-10 °C {14 °F}, the PCM cancels diagnosis of P050A.

P050B Cold start ignition timing performance

• The PCM monitors actual ignition timing using the CKP sensor while electronic spark advance control fast idle
correction operating. If the ignition timing is out of specified range, the PCM determines that the ignition timing
at cold condition has performance problem.
P0550 PSP switch circuit malfunction
• The PCM monitors PSP switch signal at PCM terminal 2T. If input voltage is low voltage (switch stays on) for 1
min. when the VSS is above 60.0 km/h {37.4 mph} and ECT is above 60 °C {140 °F}, the PCM determines
that PSP switch circuit has malfunction.
P0564 Cruise control switch circuit malfunction
• The PCM monitors the cruise control switch signal at PCM terminal 1AQ. If the PCM detects that any one of
following switches (ON OFF, SET/-, SET/COAST, RES/+) remains on for 2 min, the PCM determines that the
cruise control switch circuit has a malfunction.
P0571 Brake switch circuit problem
• The PCM monitors changes in input voltage for brake switch No.1 and No.2. If the PCM detects that both brake
switches No.1 and No.2 remain on or off for 15 s, it determines that the brake switch circuit has a malfunction.
P0601 PCM memory check sum error
• PCM internal memory check sum error
P0602 PCM programming error
• No configuration data in the PCM
P0604 PCM random access memory (RAM) error
• PCM internal RAM malfunction.
P0606 PCM processor
• The PCM internal CPU malfunction
P0610 PCM vehicle options error
• PCM data configuration error
P0638 Throttle actuator control circuit range/performance problem
• The PCM compares the actual TP with the target TP when the engine is running. If the difference is more than
the specification, the PCM determines that there is a throttle actuator control circuit range/performance
problem.

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 ON-BOARD DIAGNOSTIC [LF]
P0661 Variable intake air solenoid valve circuit low input
• The PCM monitors the variable intake air solenoid valve control signal. If the PCM turns variable intake air
solenoid valve off but voltage at PCM terminal still remains low, the PCM determines that variable intake air
solenoid valve circuit has malfunction.
P0662 Variable intake air solenoid valve circuit high input
• The PCM monitors the variable intake air solenoid valve control signal at PCM terminal. If the PCM turns
variable intake air solenoid valve on but voltage at PCM terminal still remains high, the PCM determines that
the variable intake air solenoid valve circuit has malfunction.
P0703 Brake switch input circuit problem
• The PCM monitors changes in input voltage from the brake switch No.1. If the PCM does not the voltage
changes while alternately accelerating and decelerating 8 times, the PCM determines that the brake switch
No.1 circuit has a malfunction.
P0704 Clutch pedal position (CPP) switch input circuit problem
• The PCM monitors changes in input voltage from the CPP switch. If the PCM does not detect the voltage
changes while the vehicle runs with vehicle speed above 30 km/h {19 mph} and stops 8 times alternately, the
PCM determines that the CPP switch circuit has a malfunction.
P0850 Neutral switch input circuit problem
• The PCM monitors changes in input voltage from the neutral switch. If the PCM does not detect the voltage
changes while driving the vehicle at a vehicle speed above 30 km/h {19 mph} and clutch pedal turns press
and depress 10 times repeatedly, the PCM determines that the neutral switch circuit has a malfunction
P1260 Immobilizer system problem
• The instrument cluster detects an immobilizer system malfunction.
P2088 Oil control valve (OCV) circuit low
• The PCM monitors the OCV voltage. If the PCM detects the OCV control voltage (calculated from the OCV) is
below the threshold voltage (calculated from the battery positive voltage), the PCM determines that the OCV
circuit has a malfunction.
P2089 Oil control valve (OCV) circuit high
• The PCM monitors the OCV voltage. If the PCM detects that the OCV control voltage (calculated from the
OCV) is above the threshold voltage (calculated from battery positive voltage), the PCM determines that the
OCV circuit has a malfunction.

Mazda MX-5
P2096 Target A/F feedback system too lean
• The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is more
than the specification, the PCM determines that the target A/F feedback system is too lean.
MONITORING CONDITION
— Rear HO2S voltage is above 0.1 V
P2097 Target A/F feedback system too rich
• The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is less
than specification, the PCM determines that the target A/F feedback system is too rich.
P2101 Throttle actuator circuit range/performance
• The PCM monitors the input voltage from the drive-by-wire relay when the PCM turns the drive-by-wire relay
on. If the input voltage is less than 5.0 V, the PCM determines that the drive-by-wire relay control circuit
voltage is low.
• The PCM monitors the input voltage from the drive-by-wire relay when the PCM turns the drive-by-wire relay
off. If the input voltage is more than 5.0 V the PCM determines that the drive-by-wire relay control circuit
voltage is high.
P2107 Throttle actuator control module processor error
• Throttle actuator control module internal processor error
P2108 Throttle actuator control module performance error
• PCM internal malfunction.
P2109 TP sensor minimum stop range/performance problem
• The PCM monitors the minimum TP when the closed TP learning is completed. If the TP is less than 6.03% or
more than 18.7%, the PCM determines that there is a TP sensor minimum stop range/performance problem.
P2112 Throttle actuator control system range/performance problem
• The PCM monitors the throttle actuator control duty ratio when the engine is running. If the duty ratio is more
than 95%, the PCM determines that there is a throttle actuator control system range/performance problem.
P2119 Throttle actuator control throttle body range/performance problem
• The PCM compares the actual TP with initial setting TP when the ignition switch is off. If the difference is less
than the specification, the PCM determines that there is a throttle actuator control circuit range/performance
problem.
P2122 APP sensor No.1 circuit low input
• The PCM monitors the input voltage from APP sensor No.1 when the engine is running. If the input voltage is
less than 0.35 V, the PCM determines that the APP sensor No.1 circuit input voltage is low.

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P2123 APP sensor No.1 circuit high input
• The PCM monitors the input voltage from APP sensor No.1 when the engine is running. If the input voltage is
above 4.8 V, the PCM determines that the APP sensor No.1 circuit input voltage is high.
P2127 APP sensor No.2 circuit low input
• The PCM monitors the input voltage from APP sensor No.2 when the engine is running. If the input voltage is
less than 0.35 V, the PCM determines that the APP sensor No.2 circuit has a malfunction.
P2128 APP sensor No.2 circuit high input
• The PCM monitors the input voltage from APP sensor No.2 when the engine is running. If the input voltage is
more than 4.8 V, the PCM determines that the APP sensor No.2 circuit has a malfunction.
P2135 TP sensor No.1/No.2 voltage correlation problem
• The PCM compares the input voltage from TP sensor No.1 with the input voltage from TP sensor No.2 when
the engine is running. If the difference is more than the specification, the PCM determines that there is a TP
sensor No.1/No.2 voltage correlation problem.
P2138 APP sensor No.1/No.2 voltage correlation problem
• The PCM compares the input voltage from APP sensor No.1 with the input voltage from APP sensor No.2 when
the engine is running. If the difference is more than the specification, the PCM determines that there is an APP
sensor No.1/No.2 angle correlation problem.
P2177 Fuel system too lean at off idle
• PCM monitors short term fuel trim (SHRTFT), long term fuel trim (LONGFT) during closed loop fuel control at
off-idle. If the LONGFT and the sum total of these fuel trims exceed preprogrammed criteria. PCM determines
that fuel system is too lean at off-idle.
P2178 Fuel system too rich at off idle
• PCM monitors short term fuel trim (SHRTFT), long term fuel trim (LONGFT) during closed loop fuel control at
off-idle. If the LONGFT and the sum total of these fuel trims exceed preprogrammed criteria. PCM determines
that fuel system is too rich at off-idle.
P2187 Fuel system too lean at idle
• PCM monitors short term fuel trim (SHRTFT) and long term fuel trim (LONGFT) during closed loop fuel control
at idle. If the LONGFT and the sum total of these fuel trims exceed preprogrammed criteria. PCM determines
that fuel system is too lean at idle.
P2188 Fuel system too rich at idle
• PCM monitors short term fuel trim (SHRTFT), long term fuel trim (LONGFT) during closed loop fuel control at
idle. If the LONGFT and the sum total of these fuel trims exceed preprogrammed criteria. PCM determines that
fuel system is too rich at idle.
P2195 Front HO2S signal stuck lean
• The PCM monitors the front HO2S output when the following conditions are met. If the output is more than
1.15 for 25 s, the PCM determines that the front HO2S signal remains lean.
MONITORING CONDITION
— ECT: more than 70 °C {158 °F}
— Engine speed: 1,000—3,200 rpm
— MAF amount: 6—80 g/s {0.80—10.58 lb/min}
— Target A/F feedback system status: feedback control
— Output voltage from the middle HO2S: more than 0.2 V
P2196 Front HO2S signal stuck rich
• The PCM monitors the front HO2S output current when the following conditions are met. If the output current is
less than 0.85 for 25 s, the PCM determines that the front HO2S signal remains rich.
MONITORING CONDITION
— ECT: more than 70 °C {158 °F}
— Engine speed: 1,000—3,200 rpm
— MAF amount: 6—80 g/s {0.80—10.58 lb/min}
— Target A/F feedback system status: feedback control
— Output voltage from the middle HO2S: less than 0.7 V
P2228 BARO sensor circuit low input
• PCM monitors input voltage from BARO sensor. If input voltage is below 2.1 V, PCM determines that BARO
sensor circuit has malfunction.
P2229 BARO sensor circuit high input
• PCM monitors input voltage from BARO sensor. If input voltage is above 4.0 V, PCM determines that BARO
sensor circuit has malfunction.
P2401 EVAP system leak detection pump motor circuit low
• The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. If the
pump load current is lower than specified, the PCM determines EVAP system leak detection pump motor circuit
has a malfunction.

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P2402 EVAP system leak detection pump motor circuit high
• The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. If the
pump load current is higher than specified, the PCM determines EVAP system leak detection pump motor
circuit has a malfunction.
P2404 EVAP system leak detection pump sense circuit problem
• The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. After
obtaining the reference current value, if the time in which the pump load current reaches the reference current
value is less than the specification, the PCM determines air filter has a malfunction.
P2405 EVAP system leak detection pump sense circuit low input
• The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. If the
current is lower than the specification while the PCM obtains the reference current value, the PCM determines
EVAP system leak detection pump orifice has a malfunction.
P2407 EVAP system leak detection pump sense circuit intermittent
• The PCM monitors pump load current (EVAP line pressure), while evaporative leak monitor is operating. When
either of the following is detected 6 times or more successively, the PCM determines EVAP system leak
detection pump heater has a malfunction:
— While obtaining the reference current value, the change in pump load current exceeds the specification.
— After obtaining the reference current value, the pump load current is kept lower than the maximum pump
load current for more than the specified time.
P2502 Charging system voltage problem
• PCM judges generator output voltage is above 17 V or battery voltage is below 11 V during engine running.
P2503 Charging system voltage low
• PCM needs more than 20 A from generator, and judges generator output voltage to be below 8.5 V during
engine running.
P2504 Charging system voltage high
• PCM judges generator output voltage is above 18.5 V or battery voltage is above 16.0 V during engine
running.
P2507 PCM B+ voltage low
• The PCM monitors the voltage of back-up battery positive terminal. If the PCM detects battery positive terminal
voltage below 2.5 V for 2 s, the PCM determines that the backup voltage circuit has a malfunction.

Mazda MX-5
P2610 PCM internal engine off timer performance
• PCM internal engine off timer is damaged.
End Of Sie
KOEO/KOER SELF-TEST[LF]
id010245100400
• The self-test function consists of the KOEO (Key On Engine Off) self-test, performed when the ignition switch is
turned to the ON position and the engine is stopped; and the KOER (Key On Engine Running) self-test,
performed when idling. If a malfunction is detected when either self-test is executed, a DTC is displayed on the
Mazda Modular Diagnostic System (M-MDS). Using the self-test function, the present malfunction or a
successful repair is readily confirmed. Refer to the self-test function table for the corresponding DTCs.

KOEO (Key ON, Engine Off) Self-test

• The KOEO self-test is a powertrain control system self-diagnosis, performed when the ignition switch is turned
to the ON position and the engine is stopped. A KOEO self-test begins when the connected Mazda Modular
Diagnostic System (M-MDS) sends an execute command to the PCM.
• As the KOEO self-test is performed, the PCM performs the inspection for set DTCs and if a malfunction is
detected the DTC is displayed on the Mazda Modular Diagnostic System (M-MDS).

KOER (Key ON, Engine Running) Self-test

• The KOER self-test is a powertrain control system self-diagnosis, performed when the ignition switch is turned
to the ON position and the engine is idling. A KOER self-test begins when the connected Mazda Modular
Diagnostic System (M-MDS) sends an execute command to the PCM.
• As the KOER self-test is performed, the PCM performs the inspection for set DTCs and if a malfunction is
detected the DTC is displayed on the Mazda Modular Diagnostic System (M-MDS).

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KOEO/KOER self-test table
×: Applicable
N/A: Not applicable
DTC No. Test condition
Condition
07MY 06MY KOEO KOER
B1342 ← PCM malfunction × N/A
P0011 ← CMP timing over-advanced N/A ×
P0012 ← CMP timing over-retarded N/A ×
P0016 ← CKP-CMP correlation N/A N/A
P0030 ← Front HO2S heater control circuit problem × ×
P0031 ← Front HO2S heater circuit low input × ×
P0032 ← Front HO2S heater circuit high input × ×
P0037 ← Rear HO2S heater circuit low input × ×
P0038 ← Rear HO2S heater circuit high input × ×
P0069 ← Manifold absolute pressure/atmospheric pressure correlation N/A N/A
P0101 ← MAF sensor circuit range/performance problem N/A N/A
P0102 ← MAF sensor circuit low input × ×
P0103 ← MAF sensor circuit high input × ×
P0107 ← MAP sensor circuit low input × ×
P0108 ← MAP sensor circuit high input × ×
P0111 ← IAT sensor circuit range/performance problem N/A N/A
P0112 ← IAT sensor circuit low input × ×
P0113 ← IAT sensor circuit high input × ×
P0116 ← Engine coolant temperature circuit range/performance N/A N/A
P0117 ← ECT sensor circuit low input × ×
P0118 ← ECT sensor circuit high input × ×
P0122 ← TP sensor No.1 circuit low input × ×
P0123 ← TP sensor No.1 circuit high input × ×
P0125 ← Excessive time to enter closed loop fuel control N/A N/A
P0126 ← N/A N/A
Coolant thermostat stuck open
P0128 ← N/A N/A
P0130 ← Front HO2S circuit problem × ×
P0131 ← Front HO2S circuit low input × ×
P0132 ← Front HO2S circuit high input × ×
P0133 ← Front HO2S circuit problem N/A N/A
P0134 ← Front HO2S no activity detected N/A ×
P0137 ← Rear HO2S circuit low input × ×
P0138 ← Rear HO2S circuit high input × ×
P0139 ← Rear HO2S circuit problem N/A N/A
P0140 ← Rear HO2S no activity detected N/A ×
P0222 ← TP sensor No.2 circuit low input × ×
P0223 ← TP sensor No.2 circuit high input × ×
P0300 ← Random misfire detected N/A ×
P0301 ← Cylinder No.1 misfire detected N/A ×
P0302 ← Cylinder No.2 misfire detected N/A ×
P0303 ← Cylinder No.3 misfire detected N/A ×
P0304 ← Cylinder No.4 misfire detected N/A ×
P0327 ← KS circuit low input × ×
P0328 ← KS circuit high input × ×
P0335 ← CKP sensor circuit problem N/A N/A
P0340 ← CMP sensor circuit problem N/A N/A
P0401 ← EGR flow insufficient detected N/A ×
P0403 ← EGR valve (stepping motor) circuit problem × ×
P0421 ← Warm up catalyst system efficiency below threshold N/A N/A
P0441 ← Evaporative emission control system incorrect purge flow N/A ×
P0442 ← Evaporative emission control system leak detected (small leak) N/A ×

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DTC No. Test condition
Condition
07MY 06MY KOEO KOER
P0443 ← Purge solenoid valve circuit problem × ×
Change over valve (COV) (EVAP system leak detection pump) stuck
P0446 ← N/A ×
close
P0455 ← Evaporative emission control system leak detected (gross leak) N/A ×
P0456*1 ← Evaporative emission control system leak detected (very small leak) N/A ×
P0461 ← Fuel gauge sender unit range/performance problem N/A N/A
P0462 ← Fuel gauge sender unit circuit low input × ×
P0463 ← Fuel gauge sender unit circuit high input × ×
P0480 ← Cooling fan relay No.1 control circuit malfunction × ×
P0481 ← Cooling fan relay No.2 control circuit malfunction × ×
P0482 ← Cooling fan relay No.3 control circuit malfunction × ×
P0500*3 ← VSS circuit problem N/A N/A
P0505 ← Idle speed control system problem N/A ×
P0506 ← Idle speed control system RPM lower than expected N/A N/A
P0507 ← Idle speed control system RPM higher than expected N/A ×
P050A N/A Cold start idle air control system performance × ×
P050B N/A Cold start ignition timing performance × ×
P0550 ← PSP switch circuit malfunction N/A N/A
P0564 ← Cruise control switch circuit malfunction N/A N/A
P0571 ← Brake switch circuit problem N/A N/A
P0601 ← PCM memory check sum error × ×
P0602 ← PCM programming error × ×
P0604 ← PCM random access memory (RAM) error × ×
P0606 ← PCM processor × ×

Mazda MX-5
P0610 ← PCM vehicle options error × ×
P0638 ← Throttle actuator control circuit range/performance problem N/A N/A
P0661 ← Variable intake air solenoid valve circuit low input × ×
P0662 ← Variable intake air solenoid valve circuit high input × ×
P0703 ← Brake switch input circuit problem N/A N/A
P0704*2 ← Clutch pedal position (CPP) switch input circuit problem N/A N/A
P0850 *2 ← Neutral switch input circuit problem N/A N/A
P1260 ← Immobilizer system problem × N/A
P2088 ← Oil control valve (OCV) circuit low × ×
P2089 ← Oil control valve (OCV) circuit high × ×
P2096 ← Target A/F feedback system too lean N/A N/A
P2097 ← Target A/F feedback system too rich N/A N/A
P2101 ← Throttle actuator circuit range/performance N/A ×
P2107 ← Throttle actuator control module processor error N/A ×
P2108 ← Throttle actuator control module performance error N/A ×
P2109 ← TP sensor minimum stop range/performance problem N/A ×
P2112 ← Throttle actuator control system range/performance problem N/A ×
P2119 ← Throttle actuator control throttle body range/performance problem N/A ×
P2122 ← APP sensor No.1 circuit low input × ×
P2123 ← APP sensor No.1 circuit high input × ×
P2127 ← APP sensor No.2 circuit low input × ×
P2128 ← APP sensor No.2 circuit high input × ×
P2135 ← TP sensor No.1/No.2 voltage correlation problem × ×
P2138 ← APP sensor No.1/No.2 voltage correlation problem × ×
P2177 ← Fuel system too lean at off idle N/A ×
P2178 ← Fuel system too rich at off idle N/A ×
P2187 ← Fuel system too lean at idle N/A ×
P2188 ← Fuel system too rich at idle N/A ×

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DTC No. Test condition
Condition
07MY 06MY KOEO KOER
P2195 ← Front HO2S signal stuck lean N/A N/A
P2196 ← Front HO2S signal stuck rich N/A N/A
P2228 ← BARO sensor circuit low input × ×
P2229 ← BARO sensor circuit high input × ×
P2401 ← EVAP system leak detection pump motor circuit low N/A ×
P2402 ← EVAP system leak detection pump motor circuit high N/A ×
P2404 ← EVAP system leak detection pump sense circuit problem N/A ×
P2405 ← EVAP system leak detection pump sense circuit low input N/A ×
P2407 ← EVAP system leak detection pump sense circuit intermittent N/A ×
P2502 ← Charging system voltage problem N/A ×
P2503 ← Charging system voltage low N/A ×
P2504 ← Charging system voltage high N/A ×
P2507 ← PCM B+ voltage low × ×
P2610 ← PCM internal engine off timer performance N/A N/A
*1
: California emission regulation applicable model
*2
: MT
*3 : With ABS/DSC or MT without ABS/DSC

End Of Sie
PID/DATA MONITOR AND RECORD[LF]
id010245100500
• The PID/DATA monitor items are shown below.
PID/DATA monitor table (reference)
×: Applicable
N/A: Not applicable
Item PCM
definition Unit/Condition
07MY 06MY terminal
AAT ← Ambient air temperature °C °F N/A
AC_REQ ← Refrigerant pressure switch (high, low) Off/On 1AU
ACCS ← A/C relay Off/On 1I
AFR ← Air/fuel ratio N/A 2AD
AFR_ACT ← Actual air/fuel ratio N/A N/A
ALTF ← Generator field coil control duty value % 2AI
ALTT V ← Generator output voltage V 2AJ
APP ← Accelerator pedal position % 1AO, 1AP
← %
APP1 APP sensor No.1 1AO
← V
← %
APP2 APP sensor No.2 1AP
← V
ARPMDES ← Target engine speed RPM N/A
← Pa
BARO Barometric pressure N/A
← V
BOO ← Brake switch Off/On 1AB, 1AF
BPA N/A Brake pressure applied switch Off/On N/A
CATT11_DSD ← Catalyst temperature °C °F N/A
CHRGLP ← Generator warning light Off/On N/A
COLP ← Refrigerant pressure switch (middle) OFF/ON 1J
CPP*1 ← Clutch pedal position Off/On 1D
CPP/PNP*1 ← Shift lever position Drive/Neutral 1X
DTCCNT ← Number of DTC detected N/A N/A
← °C °F
ECT Engine coolant temperature 2AH
← V
EQ_RAT11 ← Actual lambda signal N/A N/A

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Item PCM
definition Unit/Condition
07MY 06MY terminal
EQ_RAT11_D
← Target lambda N/A N/A
SD
ETC_ACT ← Throttle control ° N/A
← %
ETC_DSD Throttle control desired N/A
← °
EVAPCP ← Purge solenoid valve duty value % 2C
FAN1 ← Cooling fan relay No.1 control signal Off/On 1M
FAN2 ← Cooling fan relay No.2 control signal Off/On 1N
FAN3 ← Cooling fan relay No.3 control signal Off/On 1R
FLI ← Fuel level % N/A
FP ← Fuel pump relay Off/On 1H
2BB, 2BC,
FUELPW ← Fuel injector duration sec
2BD, 2AZ
OL/CL/
OL–Drive/
FUELSYS ← Fuel system status N/A
OL–Fault/
CL–Fault
GENVDSD ← Target generator voltage V N/A
HTR11 ← Front HO2S heater control Off/On 2BG
HTR12 ← Rear HO2S heater control Off/On 2BE
← °C °F
IAT Intake air temperature 1AT
← V
IMTV ← Variable intake air control Off/On 2J
← 1D,1X
INGEAR Gears are engaged Off/On
← N/A

Mazda MX-5
IVS ← CTP condition Idle/Off Idle N/A
KNOCKR ← Knocking retard ° 2U
EVAP system leak detection pump detect incorrect
LDP_EVAPCP ← A N/A
purge flow
LDP_IDL ← EVAP system leak detection pump idle current A N/A
LDP_MON ← EVAP system leak detection pump monitoring current A N/A
LDP_REF ← EVAP system leak detection pump reference current A N/A
LDP_SLDV ← EVAP system small leak detection value A N/A
LDP_VSL_FV ← EVAP system very small leak detection fail value mA/sec N/A
LDP_VSL_SV ← EVAP system very small leak detection safe value mA/sec N/A
LDP_VSLDV*2 ← EVAP system very small leak detection value mA/sec N/A
LOAD ← Engine load % N/A
LONGFT1 ← Long term fuel trim % N/A
← g/sec
MAF Mass air flow 1AK
← V
← Pa
MAP Manifold absolute pressure 2AG
← V
MIL ← Malfunction indicator lamp Off/On N/A
MIL_DIS ← Travelled distance since MIL illuminated km N/A
O2S11 ← Front HO2S A 2AD
O2S12 ← Rear HO2S V 2Q
PSP ← PSP switch Low/High 2T
Not Learnt/
RFCFLAG ← PCM adaptive memory produce verification N/A
Learnt
RO2FT1 ← Rear HO2S fuel trim N/A N/A
RPM ← Engine speed RPM 2W
SCCS ← Cruise control switch V 1AQ
2K, 2G, 2L,
SEGRP ← EGR control N/A
2H
SEGRP DSD ← EGR valve position desired % N/A

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Item PCM
definition Unit/Condition
07MY 06MY terminal
SELTESTDTC N/A Diagnostic trouble codes N/A N/A
SHRTFT1 ← Short term fuel trim (front) % N/A
SHRTFT12 ← Short term fuel trim (rear) % N/A
SPARKADV ← Ignition timing ° 2S
test ← Test mode Off/On N/A
TIRESIZE ← Tire revolution per mile rev/mile N/A
TP REL ← Throttle position signal (relative value) % N/A
← %
TP1 TP sensor No.1 2AK
← V
← %
TP2 TP sensor No.2 2AL
← V
TPCT ← TP sensor voltage at CTP V N/A
VPWR ← Battery positive voltage V 1BA
← 2O*4
VSS Vehicle speed KPH 1AM*3, 5,
←
1AI*3, 5
VT ACT1 ← Actual valve timing ° 2E
Difference between target valve timing and actual
VT DIFF1 ← ° N/A
valve timing
VT DUTY1 ← OCV control) % 2E

*1 : MT
*2 : California emission regulation applicable model
*3 : With ABS, DSC HU/CM
*4 : MT without ABS/DSC
*5 : AT without ABS/DSC

End Of Sie

01-02–22
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SIMULATION TEST[LF]
id010245100600
• The simulation items are shown below.
Simulation item table
×: Applicable
N/A: Not applicable
Item Test condition
Applicable component Unit/condition PCM terminal
07MY 06MY KOEO KOER
ACCS ← A/C relay Off/On × × 1I
ALTF ← Generator (field coil) % N/A × 2AI
ARPMDES N/A Target engine speed RPM × × N/A
EVAPCP ← Purge solenoid valve % × × 2C
FAN1 ← Cooling fan relay No.1 Off/On × × 1M
FAN2 ← Cooling fan relay No.2 Off/On × × 1N
FAN3 ← Cooling fan relay No.3 Off/On × × 1R
FP ← Fuel pump relay Off/On × × 1H
FUELPW1 ← Fuel injector % × × 2BB, 2BC, 2BD, 2AZ
GENVDSD ← Target generator voltage V N/A × N/A
HTR11 ← Front HO2S heater Off/On × × 2BG
HTR12 ← Rear HO2S heater Off/On × × 2BE
IMTV ← Variable intake air solenoid valve Off/On × × 2J
INJ_1 ← Fuel injector No.1 OFF N/A × 2BB
INJ_2 ← Fuel injector No.2 OFF N/A × 2BC
INJ_3 ← Fuel injector No.3 OFF N/A × 2BD
INJ_4 ← Fuel injector No.4 OFF N/A × 2AZ
EGR valve stepping motor
SEGRP ← N/A × × 2K, 2G, 2L, 2H
position

Mazda MX-5
test ← Test mode Off/On × × N/A
VT DUTY1
← CMP sensor % × × 2E
Wt

End Of Sie

01-02–23
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Downloaded from www.Manualslib.com manuals search engine
 CONTROL SYSTEM [LF]
01-40 CONTROL SYSTEM [LF]
FUEL INJECTION CONTROL Determination of Effective
OPERATION[LF] . . . . . . . . . . . . . . . . . . 01-40–1 Injection Time . . . . . . . . . . . . . . . . . . . 01-40–2
Operation . . . . . . . . . . . . . . . . . . . . . . . 01-40–1 Fuel Cut. . . . . . . . . . . . . . . . . . . . . . . . . 01-40–4
Injection Time. . . . . . . . . . . . . . . . . . . . 01-40–1

End of Toc
FUEL INJECTION CONTROL OPERATION[LF]
NG: ENGINE CONTROL SYSTEM

id014045101900
Operation
Injection timing
• There is synchronized fuel injection, which performs fuel injection by the setting of the crankshaft position, and
non-synchronized fuel injection which performs fuel injection when the condition for fuel injection is met
regardless of the crankshaft position.
Synchronized fuel injection
• The crankshaft rotation is synchronized by each intake and exhaust stroke of the cylinders, and fuel injection is
performed by the fuel injection timing and the injection amount corresponding to the input signals of the
following sensors.
— CKP sensor, MAF sensor, ECT sensor, IAT sensor
Non-synchronized fuel injection
• The crankshaft rotation is not synchronized and fuel injection is performed by the injection timing and injection
amount as triggered by the input signals of the following sensors.
— TP sensor, MAF sensor, ECT sensor, IAT sensor
Relation between synchronized and non-synchronized fuel injection
• If synchronized and non-synchronized fuel injection happen to occur together, fuel is injected by adding the fuel
injection timing of both.

Injection Time
• The PCM calculates the fuel injection amount according to the engine operation conditions as the fuel injection

Mazda MX-5
time and energizes the fuel injectors.
Fuel injector energization time and operation conditions
• The fuel injectors cause an operation delay with
the start of energization from the PCM. The PCM INEFFECTIVE
INJECTION TIME
calculates the fuel injection time by adding the
non-injection time (ineffective injection time) with
the actual injection time (effective injection time), FUEL INJECTION TIME
and energizes the fuel injectors for this time. ON
INJECTION
• The fuel injection time is based on the following SIGNAL EFFECTIVE
formula: INJECTION TIME
Fuel injection time = effective injection time +
ineffective injection time OFF
FUEL INJECTOR OPENING
Ineffective injection time VALVE ELECTRICAL
— The fuel injectors cause a delay in operation CURRENT
FUEL INJECTOR
due to a delay in the build-up of operation CURRENT
current from coil inductance with the start of
energization, and by the mass of the needle 0
valve and plunger, and spring resistance. This
delay is the ineffective injection time.
— The non-injection time is affected by the OPEN
FUEL INJECTOR VALVE
change in battery voltage. Accordingly, the FUEL INJECTOR
OPENING TIME
PCM sets the non-injection time according to CLOSED
the battery voltage
Effective injection time
— The fuel injector opening valve time which is amxuun0000003

the actual fuel injection time is called the

effective injection amount.

01-40–1
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 CONTROL SYSTEM [LF]
Determination of Effective Injection Time
• The PCM divides the engine operation conditions into control zones according to engine speed and engine
load and determines the effective injection time at each control zone to perform optimum air/fuel ratio control in
all engine driving ranges.
LARGE

HIGH LOAD VOLUME

INCREASE ZONE

START EXCESSIVE SPEED

INTAKE AIR AMOUNT ZONE FUEL CUT ZONE

FEEDBACK ZONE

DECELERATION
FUEL CUT ZONE

ENGINE SPEED HIGH

amxuun0000003

Start zone
Purpose
• Improved engine startability
Operation condition
• When engine speed is 500 rpm or less.
Determination of fuel injection time
• According to engine coolant temperature (ECT sensor) and engine speed (CKP sensor)

Feedback Zone
Purpose
• Improved fuel economy
• Improved exhaust gas purification
Control condition
• During engine operation other than high load volume increase zone and engine start zone.
Determination of fuel injection time
• During normal driving, the amounts of various correction types are added to the basic injection time to set to
the theoretical air/fuel ratio.

High load volume increase zone

Purpose
• Improved driveability
• TWC protection
Control condition
• Either the charging efficiency or the throttle valve opening angle is a fixed value or more.
Determination of fuel injection time
• Corrections are added to the basic injection amount and the high load coefficient is calculated according to the
engine speed, mass intake airflow amount and the throttle valve opening angle.

Excessive speed fuel cut zone

Purpose
• Engine protection
Control conditions
• When the engine speed is 7,000 rpm or more (WOT).
• When engine speed is 5,500 rpm or more and the engine coolant temperature is approx. -15 °C {5 °F} or less.
• When the following conditions continue for 5 min or more:
— Vehicle is stopped.
— Engine speed is 1,500 rpm or more.
— Engine coolant temperature is approx. 40 °C {104 °F}.
• When the following conditions continue for 2 min or more:
— Vehicle is stopped.
— Engine speed is 3,000 rpm or more.
— Engine coolant temperature is approx. 40 °C {104 °F}.

01-40–2
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 CONTROL SYSTEM [LF]
• When the following conditions continue for 10 s or more:
— Vehicle is stopped.
— Engine speed is 6,500 rpm or more.
— Engine coolant temperature is approx. 40 °C {104 °F}.

Note
• The PCM determines that the driver continues to unintentionally depress the accelerator pedal

Determination of fuel injection time

• Fuel injection time is set to 0 (fuel cut).

Deceleration fuel cut zone

Purpose
• Improved fuel economy
• Prevents overheating of the catalytic converter
Control conditions
• When the engine conditions are as follows (10 s or longer after engine start):
— Fully closed throttle valve
— When the engine speed is at set value or more (differs depending on the ECT) (charging efficiency at fixed
value or more, mass airflow sensor normal)
Determination of fuel injection time
• The fuel injection time is set to 0 (fuel cut).

Calculation method list for fuel injection time

A: Fuel injection time base, B: Correction for fuel injection time

Control zone

High load volume

Excessive speed

Deceleration fuel
Contents

Mazda MX-5
(Fuel injection time, calculation method, or determination method)

Feedback

increase

fuel cut
Start

cut
Injection time at start Set value according to engine coolant temperature (low engine
A
coolant temperature→long injection time)
Basic injection time Basic injection time = charging efficiency x fuel flow coefficient A A
Fuel cut Fuel injection time = 0 A A
Ineffective injection Set time according to injector performance
A A A
time
Purpose: Maintains stability of engine speed just after engine start
Correction condition
• Specified time according to engine coolant temperature directly
Volume increase
after engine start B B
correction at engine start
Correction amount
• Low engine coolant temperature→large correction
• Low intake air temperature→large correction
Purpose: Controls air/fuel ratio to the theoretical air/fuel ratio
Correction condition
• When engine coolant temperature is at set value or more
Front HO2S feedback Correction amount B
correction • Front HO2S current value 0 mA or less→volume decrease
correction
• Front HO2S current value 0 mA or more→volume increase
correction
Purpose: Corrects feedback amount according to deterioration of
front HO2S and catalytic converter
Correction condition
Rear HO2S feedback • Engine coolant temperature is at set value or more
B
correction • Engine speed is 500—4,250 rpm
• Charging efficiency is 10—80%
Correction amount
• According to rear HO2S electromotive force→correction

01-40–3
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 CONTROL SYSTEM [LF]
Purpose: Ensures engine speed stability during D-range shifting
Correction condition
D-range correction
• Throttle valve fully-closed and shifted into D range B
(AT)
Correction amount
• Low engine coolant temperature→large correction
Purpose: Improved engine output, decrease of exhaust gas
temperature
Correction condition
High load volume • According to engine speed when the throttle valve opening
B
increase correction angle is the fixed value or more, otherwise, according to engine
speed and charging efficiency
Correction amount
• High engine speed, high charging efficiency→large correction
Purpose: When engine coolant temperature is low, maintains
combustion stability
Correction condition
Warm-up volume
• While at set engine coolant temperature B B
increase correction
Correction amount
• High charging efficiency, low engine coolant temperature→large
correction
Purpose: Maintains engine speed stability during A/C operation
Correction condition
A/C load increase
• A/C is operating B B
correction
Correction amount
• Low engine coolant temperature→large correction
Purpose: Corrects fuel injection delay during acceleration to ensure
drive stability
Correction condition
Acceleration increase • When acceleration amount (change in the amount of charging
B B
correction efficiency) is at set value or more
Correction amount
• Low engine coolant temperature→large correction
• Large acceleration amount→large correction
Purpose: Ensures engine speed stability after fuel cut recovery
Correction condition
Deceleration volume
• When recovery from fuel cut B
increase correction
Correction amount
• Low engine speed→large correction
Purpose: Corrects deviation in air/fuel ratio from changes due to
aged deterioration of mechanical devices
Correction condition
Learning correction B B
• Under any condition except purge control
Correction amount
• Learning value based on average of feedback correction value
Purpose: Corrects ineffective charging time deviation from change
in intake manifold vacuum
Intake air pressure Correction condition
B B
correction • Under any condition except start zone
Correction amount
• More intake manifold vacuum→large correction

Fuel Cut
• Includes fuel cut under the following conditions except fuel cut at excessive engine speed according to engine
operation and deceleration fuel cut.

Sensor damage fuel cut

Purpose
• To prevent engine damage from abnormal ignition due to a malfunction input of a cylinder identification or the
engine speed signal.
Control condition
• When damage to the crankshaft position sensor or camshaft position sensor is detected.

01-40–4
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 CONTROL SYSTEM [LF]
Dechoke control
Purpose
• To improve engine starting startability when spark plugs are flooded.
Control conditions
• When cranking close to fully-open throttle valve

Fuel cut during immobilizer system activation

Purpose
• To prevent vehicle theft
Execution conditions
• When an engine stop request signal is received from the immobilizer system, the PCM force-stops the fuel
injectors. Therefore the engine stops.
End Of Sie

Mazda MX-5

01-40–5
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Downloaded from www.Manualslib.com manuals search engine
 BODY & ACCESSORIES 09
SECTION

Toc of SCT
GLASS/WINDOWS/ EXTERIOR TRIM . . . . . . . . . . . 09-16
MIRRORS . . . . . . . . . . . . . . . . 09-12 INSTRUMENTATION/
SECURITY AND LOCKS DRIVER INFO. . . . . . . . . . . . . 09-22
[ADVANCED KEYLESS CONTROL SYSTEM . . . . . . . . 09-40
SYSTEM]. . . . . . . . . . . . . . . . . 09-14
Toc of SCT
09-12 GLASS/WINDOWS/MIRRORS
POWER WINDOW EXTERIOR OPEN FUNCTION
SYSTEM OUTLINE. . . . . . . . . . . . . . . . . 09-12–1 BLOCK DIAGRAM. . . . . . . . . . . . . . . . . 09-12–4
POWER WINDOW SYSTEM EXTERIOR OPEN FUNCTION
WIRING DIAGRAM. . . . . . . . . . . . . . . . . 09-12–2 OPERATION . . . . . . . . . . . . . . . . . . . . . 09-12–5
EXTERIOR OPEN FUNCTION Open Function/Operation in Conjunction
OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . 09-12–3 with Transmitter . . . . . . . . . . . . . . . . . 09-12–5
EXTERIOR OPEN FUNCTION Operation Prohibition/
STRUCTURAL VIEW . . . . . . . . . . . . . . . 09-12–4 Stop Condition . . . . . . . . . . . . . . . . . . 09-12–5

End of Toc

Mazda MX-5
POWER WINDOW SYSTEM OUTLINE
NG: POWER WINDOW SYSTEM

id091200100100
• An exterior open function has been added to the power window system.
• The power retractable hardtop and power windows operate simultaneously such that the power windows open
at the same time the power retractable hardtop begins to operate.
End Of Sie

09-12–1
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 GLASS/WINDOWS/MIRRORS
POWER WINDOW SYSTEM WIRING DIAGRAM
id091200100300
With exterior open function
B+ IG1

1A 1B

1G

CLOSE

CLOSE
OPEN
AUTO

AUTO
OPEN
1C 2C
POWER
RETRACTABLE
HARDTOP CM P/W CM
1E 2B

OPEN
RELAY OPEN
RELAY
CLOSE CLOSE
RELAY RELAY
1H 1I 1J 1D 1F

4S

CLOSE CLOSE
KEYLESS CM

OPEN OPEN
amxuuw0000007

09-12–2
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 GLASS/WINDOWS/MIRRORS
Without exterior open function
IG1

CLOSE

CLOSE
OPEN
AUTO

AUTO
OPEN
1C A
POWER
RETRACTABLE P/W CM
HARDTOP CM
1E H

OPEN
RELAY OPEN
RELAY
CLOSE CLOSE

Mazda MX-5
RELAY RELAY
I J D F

CLOSE CLOSE

OPEN OPEN
amxuuw0000007

End Of Sie
EXTERIOR OPEN FUNCTION OUTLINE
id091200103000
• An exterior open function has been adopted so that the power window system can be operated from outside
the vehicle.
• This system can operate in conjunction with the transmitter (open operation only).
Operation item Open operation (Automatic open)
Transmitter UNLOCK button operation
(long press, approx. 1.5 s or more)

End Of Sie

09-12–3
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 GLASS/WINDOWS/MIRRORS
EXTERIOR OPEN FUNCTION STRUCTURAL VIEW
id091200103100

POWER WINDOW
REGULATOR/MOTOR

WITH KEYLESS WITH ADVANCED

ENTRY SYSTEM KEYLESS SYSTEM

KEYLESS CONTROL MODULE

KEYLESS RECEIVER

POWER WINDOW
MAIN SWITCH

amxuun0000000

End Of Sie
EXTERIOR OPEN FUNCTION BLOCK DIAGRAM
id091200103200
With Advanced Keyless System

LOCK LINK DOOR TRUNK

PUSH INPUT SIGNAL
COMPARTMENT
SWITCH SWITCH SWITCH
LIGHT SWITCH
KEYLESS CONTROL SIGNAL
RECEIVER

POWER WINDOW MOTOR (LH)

KEYLESS CONTROL MODULE P/W MAIN
TRANSMITTER SW
POWER WINDOW MOTOR (RH)

amxuun0000000

With Keyless Entry System

KEY LOCK LINK DOOR TRUNK INPUT SIGNAL

REMINDER COMPARTMENT
SWITCH SWITCH
SWITCH LIGHT SWITCH
CONTROL SIGNAL
KEYLESS
RECEIVER

POWER WINDOW MOTOR (LH)

TRANSMITTER P/W MAIN
KEYLESS CONTROL MODULE
SW
POWER WINDOW MOTOR (RH)

amxuun0000000
End Of Sie

09-12–4
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 GLASS/WINDOWS/MIRRORS
EXTERIOR OPEN FUNCTION OPERATION
id091200103300
• With the system, door glass can open in conjunction with the UNLOCK operation of the transmitter.
• One opening operation fully opens (automatic open) door glass.
• The keyless control module sends the signal requiring the open operation to the power window control unit
(power window main switch) based on the signals input from the switches.
• The power window control unit (power window main switch) sends open operation signal to the power window
motor based on the required signal, and operates the door glass.

Open Function/Operation in Conjunction with Transmitter

• The door glass can be opened by holding the button in the UNLOCK position for approx. 1.5 s or more within
the transmitter reception area.
• When the door glass is not fully open, operate and hold the transmitter UNLOCK position for approx. 1.5 s, and
the door glass performs automatic open operation to fully open the door glass. During the automatic open
operation, if the transmitter is operated again*1, it stops in that position.
*1 : The operation button can be either the LOCK/UNLOCK/PANIC button. Also, the holding time is not factored.

WITH ADVANCED KEYLESS SYSTEM

OPEN OPERATION
OPEN
(UNLOCK BUTTON,
HOLD APPROX. 1.5 S)
KEYLESS
RECEIVER OPEN OPERATION
OPEN OPEN
REQUEST OPERATION
UNLOCK SIGNAL SIGNAL
SIGNAL KEYLESS CONTROL P/W
MODULE MAIN SW

Mazda MX-5
WITH KEYLESS ENTRY SYSTEM
OPEN OPERATION
OPEN
(UNLOCK BUTTON,
HOLD APPROX. 1.5 S)
KEYLESS
RECEIVER
OPEN OPEN OPEN OPERATION
REQUEST OPERATION
SIGNAL SIGNAL
UNLOCK KEYLESS CONTROL P/W
SIGNAL MODULE MAIN SW

amxuun0000000

Operation Prohibition/Stop Condition

• When the following conditions are met before the operation, the exterior open function does not operate. Also, if
the conditions are met during the operation, the operation stops.
— Either door/trunk is open (when the door switch or trunk compartment light switch is ON)
— The key is inserted in the steering lock (when the keyless switch is ON)
— The push switch is pressed in or the start knob (ignition switch) is in a position other than the LOCK (with
advanced keyless system)
— The transmitter is not in the reception area
— The transmitter is operated during the operation (LOCK, UNLOCK, PANIC operation)
End Of Sie

09-12–5
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Downloaded from www.Manualslib.com manuals search engine
 SECURITY AND LOCKS [ADVANCED KEYLESS SYSTEM]
09-14 SECURITY AND LOCKS [ADVANCED KEYLESS
SYSTEM]
SECURITY AND LOCKS OUTLINE ON-BOARD DIAGNOSYS SYSTEM
[ADVANCED OPERATION[ADVANCED KEYLESS
KEYLESS SYSTEM] . . . . . . . . . . . . . . . 09-14–1 SYSTEM] . . . . . . . . . . . . . . . . . . . . . . . . 09-14–1

End of Toc
SECURITY AND LOCKS OUTLINE[ADVANCED KEYLESS SYSTEM]
NG: SECURITY AND LOCKS

id0914b1100100
• Due to the adoption of the power retractable hardtop, DTC U0207 has been added.
End Of Sie
ON-BOARD DIAGNOSYS SYSTEM OPERATION[ADVANCED KEYLESS SYSTEM]
NG: KEYLESS ENTRY SYSTEM

id0914b1111000
DTC Table
DTC
mazda modular diagnostic System malfunction location
system (M-MDS) display
U0207 Abnormal message from power retractable hardtop control module

End Of Sie

Mazda MX-5

09-14–1
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Downloaded from www.Manualslib.com manuals search engine
 EXTERIOR TRIM
09-16 EXTERIOR TRIM
EXTERIOR TRIM OUTLINE . . . . . . . . . . 09-16–1 Construction . . . . . . . . . . . . . . . . . . . . . 09-16–13
EXTERIOR TRIM Operation . . . . . . . . . . . . . . . . . . . . . . . 09-16–14
STRUCTURAL VIEW . . . . . . . . . . . . . . 09-16–1 DECK PANEL LINK
POWER RETRACTABLE HARDTOP CONSTRUCTION/OPERATION . . . . . . . 09-16–15
SYSTEM OUTLINE . . . . . . . . . . . . . . . . 09-16–1 Construction . . . . . . . . . . . . . . . . . . . . . 09-16–15
POWER RETRACTABLE HARDTOP Operation . . . . . . . . . . . . . . . . . . . . . . . 09-16–15
SYSTEM STRUCTURAL VIEW. . . . . . . 09-16–2 ROOF/DECK PANEL MOTOR
POWER RETRACTABLE HARDTOP FUNCTION . . . . . . . . . . . . . . . . . . . . . . . 09-16–16
SYSTEM WIRING DIAGRAM . . . . . . . . 09-16–3 ROOF/DECK PANEL MOTOR
POWER RETRACTABLE HARDTOP CONSTRUCTION . . . . . . . . . . . . . . . . . . 09-16–17
SYSTEM OPERATION . . . . . . . . . . . . . 09-16–4 POWER RETRACTABLE HARDTOP
Operation Conditions . . . . . . . . . . . . . . 09-16–4 SWITCH OUTLINE . . . . . . . . . . . . . . . . . 09-16–18
Power Retractable Hardtop POWER RETRACTABLE
Operation . . . . . . . . . . . . . . . . . . . . . . 09-16–4 HARDTOP SWITCH
POWER RETRACTABLE HARDTOP CONSTRUCTION/OPERATION . . . . . . . 09-16–18
CONTROL MODULE FUNCTION . . . . . 09-16–10 ON-BOAD DIAGNOSTIC OUTLINE . . . . . 09-16–19
FAIL-SAFE FUNCTION . . . . . . . . . . . . 09-16–11 Special Features . . . . . . . . . . . . . . . . . . 09-16–19
Buzzer operation function . . . . . . . . . . 09-16–12 ON-BOAD DIAGNOSTIC PID DATE
Power retractable hardtop indicator light MONITOR FUNCTION . . . . . . . . . . . . . . 09-16–19
control . . . . . . . . . . . . . . . . . . . . . . . . 09-16–12 On-board Diagnostic Function . . . . . . . 09-16–19
POWER RETRACTABLE HARDTOP LINK PID/Data Monitor Function . . . . . . . . . . 09-16–21
CONSTRUCTION/OPERATION . . . . . . 09-16–13

End of Toc
EXTERIOR TRIM OUTLINE
NG: EXTERIOR TRIM

id091600100100
• Convertible top has been adopted.
• A power retractable hardtop system has been adopted which opens/closes automatically via switch operation.

Mazda MX-5
End Of Sie
EXTERIOR TRIM STRUCTURAL VIEW
id091600100200

CONVERTIBLE TOP POWER RETRACTABLE HARDTOP

DECK PANEL

amxuun0000003

End Of Sie
POWER RETRACTABLE HARDTOP SYSTEM OUTLINE
NG: POWER RETRACTABLE HARDTOP

id091600101000
• A switch-operated, open/close power retractable hardtop system has been adopted.
• The power retractable hardtop system consists of the following functions:
— Auto-open/close function
— Fail-safe function
— Malfunction detection function
• The buzzer sounds during operation and when a malfunction is detected.
• Since the power retractable hardtop operates in conjunction with the power windows, the door glass opens 100
mm at the same time the power retractable hardtop begins to operate.
End Of Sie

09-16–1
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 EXTERIOR TRIM
POWER RETRACTABLE HARDTOP SYSTEM STRUCTURAL VIEW
id091600101100

POWER RETRACTABLE HARDTOP

LIMIT SWITCH
(POWER RETRACTABLE HARDTOP
POWER RETRACTABLE HARDTOP CLOSE POSITION SWITCH)
LIMIT SWITCH
(POWER RETRACTABLE HARDTOP
DECK PANEL LIMIT SWITCH
OPEN POSITION SWITCH)
(DECK PANEL OPEN
POWER POSITION SWITCH)
RETRACTABLE
HARDTOP VEHICLE DECK PANEL LIMIT SWITCH
SWITCH FRONT (DECK PANEL CLOSE
POSITION SWITCH)
POWER
RETRACTABLE VEHICLE
HARDTOP INDICATOR FRONT
LIGHT
ROOF LINK

ROOF HOOK
TOP LOCK SWITCH

DECK PANEL LINK

TRUNK SWITCH

ROOF MOTOR LINK

DECK PANEL MOTOR
ROOF MOTOR

POWER RETRACTABLE HARDTOP

POWER WINDOW MAIN SWITCH CONTROL MODULE
amxuun0000005

End Of Sie

09-16–2
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 EXTERIOR TRIM
POWER RETRACTABLE HARDTOP SYSTEM WIRING DIAGRAM
id091600101200

POWER RETRACTABLE
HARDTOP OPENED
POSITION SWITCH
POWER RETRACTABLE
HARDTOP CLOSED
POSITION SWITCH

DECK PANEL OPENED

POSITION SWITCH +B

1T 1J

1R
1A
3F TRUNK OPENER
RELAY
3O
1V
DECK PANEL CLOSED
POSITION SWITCH
ROOF MOTOR KEYLESS SYSTEM
(LEFT)
2A
3L
2B
3D IGNITION
SWITCH
DECK PANEL MOTOR
(LEFT)
3H

Mazda MX-5
3P 2C
TO
ROOF MOTOR 1H FLASHER
(RIGHT) UNIT

3A POWER POWER HAZARD

POWER RETRACTABLE HARDTOP RETRACTABLE RETRACTABLE WARNING
3I CONTROL MODULE HARDTOP HARDTOP
SWITCH
OPENING CLOSING
SWITCH SWITCH
DECK PANEL MOTOR 1X
(RIGHT)

3M TOP LOCK SWITCH

3E 1D

TRUNK CLOSED POSITION SENSOR

1F

1G
INPUT (1) VEHICLE SPEED
(2) TRANSMISSION POSITION (N/P)
1I (3) TRANSMISSION TYPE
CAN-H
1S (4) TRANK OPENING CONFIRMATION

OUTPUT (1) BUZZER RINGING REQUEST

1M 1U (2) INFORMATION OF RHT CONDITION
CAN-L (3) PERMISSION INFORMATION OF
1O TRUNK OPENING
(4) INFORMATION OF REAR DECK
CONDITION
1K
1C POWER WINDOW
1Q
1E MAIN SWITCH

2E
2F

1W

amxuun0000005

End Of Sie

09-16–3
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 EXTERIOR TRIM
POWER RETRACTABLE HARDTOP SYSTEM OPERATION
id091600101300
Operation Conditions
• The Power retractable hardtop operates when all of the following conditions are met.
— Ignition switch is in the ON position
— The trunk lid is in the fully closed position.
— The selector lever is in the P or N position (A/T).
— The shift lever is in the neutral position (When the neutral switch is ON) (M/T).
— The vehicle speed is 3 km/h {1.86 mph} or less.
— The power supply voltage is between 8.5 to 16.5 V.
— The top lock switch is unlocked.

Power Retractable Hardtop Operation

Open operation timing chart

DECK PANEL DECK PANEL

DECK PANEL CLOSE
POWER RETRACTABLE HARDTOP OPEN OPEN OPERATION DECK PANEL
OPERATION OPERATION CLOSE OPERATION
OPEN SWITCH ON COMPLETED
START START COMPLETED

POWER RETRACTABLE ON
HARDTOP OPEN SWITCH OFF

SIGNAL
DOOR GLASS OPEN OUTPUT
REQUEST OUTPUT SIGNAL
STOPPED

DECK PANEL CLOSE OFF

POSITION SWITCH ON

DECK PANEL OPEN ON

POSITION SWITCH OFF

ON
DECK PANEL MOTOR
OFF

OPEN

DECK PANEL

CLOSE

POWER RETRACTABLE HARDTOP ON

OPEN POSITION SWITCH OFF

POWER RETRACTABLE HARDTOP ON

CLOSE POSITION SWITCH OFF

ON
ROOF MOTOR
OFF

OPEN

ROOF PANEL

CLOSE

ROOF PANEL ROOF PANEL POWER

OPEN OPERATION OPEN OPERATION RETRACTABLE
START COMPLETED HARDTOP OPEN
SWITCH OFF

amxuun0000005

• Pauses depending on the operation the same as the close operation timing chart.

09-16–4
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 EXTERIOR TRIM
Open operation
1. When the Power retractable hardtop open switch is turned on with all the Power retractable hardtop operation
conditions met, the Power retractable hardtop open request signal is sent to the Power retractable hardtop
control module.
2. The Power retractable hardtop control module confirms the operation conditions when it receives the signal,
and if all the conditions are met, it sends an operation start beep signal to the instrument cluster.
3. The window glass open request signal is sent to the power window main switch.
4. When the door glass lowers approx. 100 mm, the deck panel motor operates and the deck panel moves in the
open direction.
5. When the deck panel link pin contacts the deck panel open position switch and the switch is turned on, the deck
panel is determined to be fully open and the deck panel motor stops.
POWER RETRACTABLE HARDTOP
OPEN SWITCH
POWER RETRACTABLE HARDTOP
OPEN REQUEST SIGNAL

POWER WINDOW DOOR GLASS OPEN OPERATION START INSTRUMENT CLUSTER

MAIN SWITCH REQUEST SIGNAL SOUND SIGNAL

DECK PANEL OPEN OPERATION START DECK PANEL MOTOR

DECK PANEL

Mazda MX-5
DECK PANEL

DECK PANEL
LINK

OPEN OPERATION

PIN

DECK PANEL OPEN POSITION SWITCH

amxuun0000005

6. The roof panel motor operates and the roof panel moves in the open direction.

09-16–5
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 EXTERIOR TRIM
7. When the roof panel link pin contacts the Power retractable hardtop open position switch and the switch is
turned on, the roof panel is determined to be fully open and the roof panel motor stops.

DECK PANEL
POWER RETRACTABLE HARDTOP

ROOF
MOTOR
LINK

FULLY-OPEN
POSITION POWER RETRACTABLE HARDTOP
OPEN POSITION SWITCH

amxuun0000004

8. The deck panel motor operates and the deck panel moves in the close direction.
9. Because link A rotates in the direction of the arrow due to the deck panel motor rotation, the roof hook cable is
pulled and the roof hook is locked.

09-16–6
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 EXTERIOR TRIM
10. When the deck panel link pin contacts the deck panel close switch and the switch is turned off, the deck panel
is determined to be fully closed and the deck panel motor stops.

ROOF HOOK
FRONT ROOF PANEL
LINK A
ROOF HOOK

ROOF HOOK

DECK PANEL CLOSE POSITION SWITCH

ROOF HOOK CABLE

DECK PANEL

DECK PANEL

LH RH
LINK A

Mazda MX-5
PIN
ROOF HOOK CABLE
DECK PANEL CLOSE POSITION SWITCH

amxuun0000004

11. When the Power retractable hardtop open operation is finished, an operation finish beep signal is sent to the
instrument cluster.

09-16–7
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 EXTERIOR TRIM
Close operation timing chart

DECK PANEL
OPEN OPERATION
DECK STOP
PANEL DECK TURN ON
POWER POWER DECK PANEL
OPEN PANEL
RETRACTABLE RETRACTABLE CLOSE OPERATION
OPERATION OPEN DECK PANEL
HARDTOP HARDTOP CLOSE COMPLETED
START OPERATION CLOSE OPERATION START
CLOSE DECK PANEL SWITCH AGAIN
SWITCH ON START OPEN COMPLETED

POWER RETRACTABLE
ON
HARDTOP
OFF
CLOSE SWITCH

DOOR GLASS SIGNAL

OUTPUT
OPEN
SIGNAL
REQUEST OUTPUT STOPPED

DECK PANEL CLOSE OFF

POSITION SWITCH ON

DECK PANEL OPEN

ON
POSITION SWITCH
OFF

DECK PANEL ON
MOTOR OFF

OPEN

DECK PANEL

CLOSE

POWER
RETRACTABLE
ON
HARDTOP OPEN
OFF
POSITION SWITCH

POWER
RETRACTABLE
ON
HARDTOP CLOSE
OFF
POSITION SWITCH

ON
ROOF MOTOR
OFF

OPEN

ROOF PANEL

CLOSE

ON
IGNITION SWITCH
OFF

IGNITION
POWER RETRACTABLE ROOF PANEL
SWITCH OFF
HARDTOP CLOSE IGNITION CLOSE POWER RETRACTABLE
SWITCH OFF TURN ON POWER SWITCH ON OPERATION
RETRACTABLE ROOF PANEL HARDTOP CLOSE SWITCH
COMPLETED OFF
HARDTOP CLOSE CLOSE OPERATION
SWITCH AGAIN START ROOF PANEL
CLOSE OPERATION
START

amxuun0000004

09-16–8
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 EXTERIOR TRIM
Close operation
1. When the Power retractable hardtop close switch is turned on with all the Power retractable hardtop operation
conditions met, Power retractable hardtop close request signal is sent to the Power retractable hardtop control
module.
2. The Power retractable hardtop control module confirms the operation conditions when it receives the signal,
and if all the conditions are met, it sends an operation start beep signal to the instrument cluster.
3. The window glass open request signal is sent to the power window main switch.
4. When the door glass lowers approx. 100 mm, the deck panel motor operates and the deck panel moves in the
open direction.
5. Because link A rotates in the direction of the arrow due to the deck panel motor rotation, the roof hook cable
loosens and the roof hook is unhooked.
6. When the deck panel link pin contacts the deck panel open position switch and the switch is turned on, the deck
panel is determined to be fully open and the deck panel motor stops.
POWER RETRACTABLE HARDTOP
CLOSE SWITCH
POWER RETRACTABLE HARDTOP
CLOSE REQUEST SIGNAL

POWER WINDOW DOOR GLASS OPEN OPERATION START INSTRUMENT CLUSTER

MAIN SWITCH REQUEST SIGNAL SOUND SIGNAL

DECK PANEL OPEN OPERATION START DECK PANEL MOTOR

ROOF HOOK FRONT ROOF PANEL

LINK A
ROOF HOOK

Mazda MX-5
ROOF HOOK

DECK PANEL OPEN POSITION SWITCH

ROOF HOOK CABLE

OPEN OPERATION
DECK PANEL
DECK PANEL

LH RH
DECK PANEL LINK

LINK A

PIN

ROOF HOOK CABLE DECK PANEL OPEN POSITION SWITCH

amxuun0000004

7. The roof panel motor operates and the roof panel moves in the close direction.

09-16–9
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 EXTERIOR TRIM
8. When the roof panel link pin contacts the Power retractable hardtop close position switch and the switch is
turned on, the roof panel is determined to be fully closed and the roof panel motor stops.

DECK PANEL
POWER RETRACTABLE HARDTOP

FULLY-CLOSE
ROOF POSITION
MOTOR
LINK

POWER RETRACTABLE HARDTOP

CLOSE POSITION SWITCH
amxuun0000005

9. The deck panel motor operates and the deck panel moves in the close direction.
10. When the deck panel link pin contacts the deck
panel close switch and the switch is turned off, the
deck panel is determined to be fully closed and DECK PANEL
the deck panel motor stops.
11. When the Power retractable hardtop close
operation is finished, an operation finish beep
signal is sent to the instrument cluster.
End Of Sie

PIN

POWER RETRACTABLE HARDTOP

CLOSE POSITION SWITCH

amxuun0000003

POWER RETRACTABLE HARDTOP CONTROL MODULE FUNCTION

id091600101400
• Controls the Power retractable hardtop control module, roof motor, and the deck panel motor based on the
signals from each switch.
• A fail-safe function has been adopted which stops the operation if an abnormal signal is detected from any part
during Power retractable hardtop operation.
• A self-diagnostic function has been adopted which can verify the malfunctioning area.

09-16–10
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 EXTERIOR TRIM
FAIL-SAFE FUNCTION
• The power retractable hardtop control module monitors each input/output part, and if a malfunction is detected,
performs the following actions.
Item Detection Condition Action after malfunction detected Recovery condition
Power supply Power supply voltage is 7.5 V • Power retractable hardtop not Power supply voltage is
voltage error or less, or 17.5 V or more. operated → Inhibits Power between 8.5 to 16.5 V.
retractable hardtop operation
• Power retractable hardtop operating
→ Stops Power retractable hardtop
operation
Roof/deck panel Sensor power supply voltage is Stops motor operation The ignition switch is turned
motor Hall sensor 5 V or less. from the ON position in the
power supply following order.
voltage error • OFF→ ON
Roof/deck panel Roof/deck panel motor Hall Temporarily stops the operation, Pulse signal detected
motor Hall sensor sensor pulse signal cannot be however, the operation can be
malfunction detected. performed by turning on the Power
retractable hardtop switch again.
Door glass open notification • If the signal is detected during the Door glass open notification
signal cannot be detected. Power retractable hardtop close signal can be detected.
operation, inhibits the operation after
the Power retractable hardtop is fully
closed. (Only deck panel can
operate.)
• If the signal is detected during the
Power retractable hardtop open
operation, the open operation
continues and after the operation
finishes, the close operation can be
performed only once. Inhibits the
Door glass open operation after the Power retractable
notification signal

Mazda MX-5
hardtop is fully closed. (Only deck
error panel can operate.)
Open notification signal is • If the signal is detected with the Continuous reception of the
received continuously for 30 s Power retractable hardtop fully open notification signal stops
or more. closed and not operating, inhibits the temporarily.
operation.
• If the signal is detected with the
Power retractable hardtop fully open
and not operating, the Power
retractable hardtop close operation
can be performed only once. Inhibits
the operation after the Power
retractable hardtop is fully closed.
Supply voltage to the motor is Stops motor operation The ignition switch is turned
Roof/deck panel lowered. from the ON position in the
motor malfunction following order.
• OFF→ ON
Roof motor (Left Difference in pulse count Stops motor operation Power retractable hardtop
and right position number between left and right switch is operated again.
combination) is at a certain level or more. However, if detected three
times or more, the ignition
switch is turned from the ON
position in the following order.
• OFF→ ON
Deck panel motor Difference in pulse count Stops motor operation Power retractable hardtop
(Left and right number between left and right switch is operated again.
position is at a certain level or more. However, if detected three
combination) times or more, the ignition
switch is turned from the ON
position in the following order.
• OFF→ ON
Power retractable The Power retractable hardtop/ Inhibits Power retractable hardtop Normal logic is detected.
hardtop/deck deck panel limit switch is operation.
panel limit switch malfunctioning.
malfunction

09-16–11
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 EXTERIOR TRIM
Item Detection Condition Action after malfunction detected Recovery condition
Top lock switch on is detected Close operation can be performed only Top lock switch off is detected.
with the Power retractable once. Inhibits the operation after the
hardtop open. Power retractable hardtop is fully closed.
Top lock switch
malfunction Top lock switch off is detected None Vehicle speed 0 km/h is
with the Power retractable detected.
hardtop closed and vehicle
speed detected.
Switch input is 1 V or less. Inhibits Power retractable hardtop Normal input voltage is
operation. recovered.
Switch on signal is detected for Inhibits Power retractable hardtop Power retractable hardtop
Power retractable
30 s or more after IG-ON. operation. switch off signal is detected.
hardtop switch
malfunction Power retractable hardtop Inhibits Power retractable hardtop Power retractable hardtop
open and close on signals are operation. switch off signal is detected.
detected simultaneously for 30
s or more.
CAN system of the Power Inhibits Power retractable hardtop Normal communication is
retractable hardtop control operation. recovered.
module is malfunctioning.
CAN communication error Inhibits Power retractable hardtop Normal communication is
between PCM and Power operation. recovered.
retractable hardtop control
Communication module
error
CAN communication error Inhibits Power retractable hardtop Normal communication is
between TCM and Power operation. recovered.
retractable hardtop control
module
Vehicle speed signal error Inhibits Power retractable hardtop Normal communication is
operation. recovered.

Buzzer operation function

• Sends beep signals to the instrument cluster before and after the Power retractable hardtop system operation,
when the operation is refused, and during an operation warning. (See 09-22-2 POWER RETRACTABLE
HARDTOP WARNING ALARM CONSTRUCTION/OPERATION.)

Power retractable hardtop indicator light control

• Sends illumination or flash signal to the power retractable hardtop indicator light in the following pattern
depending on the Power retractable hardtop status.
Illumination pattern Illumination condition Lights off condition
Power Illuminated • Open operation is finished.
retractable Approx. 0.5 s Power retractable hardtop • Close operation is finished
hardtop Not illuminated operation is continued.
t t
operating
• Power retractable hardtop • Power retractable hardtop
is fully opened and the top switch is turned on.
lock is unlocked. (Top lock • Top lock is locked after
Power
switch is OFF.) close operation is finished.
retractable Illuminated • Power retractable hardtop
hardtop half-
Not illuminated switch is turned off during
open and not
Power retractable hardtop
operating
operation and the
operation is temporarily
stopped.
DTC is detected or • Malfunction is repaired or
recorded.(The power the DTC is cleared.
retractable hardtop indicator
Power
light does not illuminate
retractable Illuminated depending on the DTC.)
hardtop Approx. 0.3 s (The power retractable hardtop
system Not illuminated
t t indicator light does not
malfunctionin
illuminate depending on the
g
DTC.)(See 09-16-19 ON-
BOAD DIAGNOSTIC PID
DATE MONITOR FUNCTION.)
End Of Sie

09-16–12
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 EXTERIOR TRIM
POWER RETRACTABLE HARDTOP LINK CONSTRUCTION/OPERATION
id091600101500
Construction
• Installed to the inside of the Power retractable hardtop.
• The front roof panel is installed to the front roof panel link.
• The middle roof panel is installed to the middle roof panel link and roof motor link.
• The roof motor link gear is integrated with the roof motor link.
• The rear window glass is installed to rear window glass link A.
• The Power retractable hardtop fully opens/closes via the rotation of each link in conjunction with the roof motor
rotation.

FRONT ROOF
PANEL LINK MIDDLE ROOF
PANEL LINK

REAR WINDOW GLASS

FRONT ROOF REAR WINDOW

PANEL GLASS LINK A
MIDDLE ROOF PANEL
ROOF LINK

ROOF MOTOR LINK

REAR WINDOW
GLASS LINK B

ROOF MOTOR ROOF MOTOR LINK GEAR

Mazda MX-5
amxuun0000005

09-16–13
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 EXTERIOR TRIM
Operation
Open operation
1. After the deck panel is fully opened, the roof motor starts rotating based on the operation signal from the Power
retractable hardtop control module.
2. The roof motor link gear and the roof motor link start rotating due to the roof motor rotation, and at the same
time, the middle roof panel and the middle roof panel link rotate.
3. The front roof panel link and rear window glass link B rotate due to the middle roof panel link rotation.
4. Rear window glass link A rotates faster than the middle roof panel link at pivot fulcrum A, rear window glass link
A moves downward, and the rear window glass moves in the inner side of the middle roof panel
5. Due to the rotation of the roof link at pivot fulcrum B, the middle roof panel, rear window glass, and the front roof
panel move to the fully-open position.
6. When the roof motor link rotates to the fully-open position, A part of the roof motor link shown in the figure
presses the Power retractable hardtop open position switch stopping the roof motor rotation.
FULLY CLOSE POSITION
MIDDLE ROOF
PANEL LINK MIDDLE ROOF
FRONT ROOF PANEL LINK
PANEL LINK
REAR WINDOW GLASS
FULLY CLOSE
POSITION DECK PANEL
REAR WINDOW
GLASS LINK A
MIDDLE ROOF PANEL
MIDDLE ROOF PANEL FULLY CLOSE
ROOF MOTOR LINK POSITION

ROTATE FAST
ROOF FULCRUM A
MOTOR REAR WINDOW
GLASS LINK B
ROOF MOTOR POWER RETRACTABLE FIGURE 1
FULLY CLOSE POSITION
RINK GEAR HARDTOP
CLOSE POSITION
SWITCH
A ROOF
MOTOR
LINK
FULLY CLOSE
POSITION
FULLY
FRONT ROOF A OPEN
PANEL POSITION

POWER RETRACTABLE FRONT

FULCRUM B HARDTOP ROOF
ROOF LINK OPEN POSITION PANEL
SWITCH

MIDDLE ROOF
MIDDLE ROOF
PANEL FULLY OPEN
PANEL
POSITION

REAR WINDOW GLASS

REAR WINDOW GLASS
amxuun0000005

End Of Sie

09-16–14
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 EXTERIOR TRIM
DECK PANEL LINK CONSTRUCTION/OPERATION
id091600101600
Construction
• The links rise according to the rotation of the deck panel links to fully open or close the deck.
• The deck panel limit switch is installed to the deck panel link (RH).
• The guide for the deck panel manual open/close is installed to the deck panel base link. (Refer to the Workshop
Manual for the procedure.)
DECK PANEL BASE LINK DECK PANEL LINK B

DECK PANEL LINK A

DECK PANEL CLOSE POSITION SWITCH
DECK PANEL (DECK PANEL LIMIT SWITCH)
SECTOR GEAR

SECTOR GEAR

PIN

DECK PANEL OPEN

POSITION SWITCH
(DECK PANEL LIMIT SWITCH)

KNOB
DECK PANEL MOTOR

GUIDE

Mazda MX-5
amxuun0000005

Operation
1. The deck panel motor starts to rotate based on an operation signal of the power retractable hardtop control
module.
2. The sector gear rotates according to the deck
panel motor rotation, and the lock pin area of the DECK PANEL BASE LINK
LOCK PIN
deck panel base link and sector gear are DECK PANEL LINK A
disengaged.

SECTOR GEAR
KNOB
DECK PANEL MOTOR
amxuun0000001

3. The knob presses deck panel link A upward by

the rotation of the sector gear. DECK PANEL LINK A

DECK PANEL MOTOR

KNOB

amxuun0000005

09-16–15
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 EXTERIOR TRIM
4. Deck panel link A is pressed upward to fully open
the deck panel. DECK PANEL LINK A

DECK PANEL MOTOR

KNOB

amxuun0000005

5. When deck panel link A is fully opened, the sector

gear pin shown in the figure presses the deck
panel open position switch to stop the deck panel
motor rotation.
PIN
End Of Sie DECK PANEL CLOSE
POSITION SWITCH
SECTOR
GEAR

DECK PANEL OPEN

POSITION SWITCH
amxuun00000060

ROOF/DECK PANEL MOTOR FUNCTION

id091600101700
• The motor rotates normally/reversely according to the signal from the power retractable hardtop control module
to move the roof panel automatically.
End Of Sie

09-16–16
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 EXTERIOR TRIM
ROOF/DECK PANEL MOTOR CONSTRUCTION
id091600101800
• Consists of a motor, connector, and gear.
• Two Hall effect switches are located in the connector.
• In the connector, the roof motor has one Hall effect switch and the deck panel motor has two (only one Hall
effect switch is used). (The Hall effect switch does not detect rotation direction.)
• Hall effect switch 1 outputs one pulse cycle for each rotation of the motor axle and the power retractable
hardtop control module detects motor rotation speed from this.
Roof panel motor construction view

MAGNET
HALL EFFECT SWITCH

A A

SEC. A—A

Mazda MX-5
HI

LO

ONE REVOLUTION
OF POWER WINDOW
MOTOR
amxuun0000004

09-16–17
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 EXTERIOR TRIM
Deck panel motor construction view
CONNECTOR

HALL EFFECT SWITCH 1

A
MAGNET
SHAFT

HALL EFFECT SWITCH 2

A
HALL EFFECT SWITCH
SEC. A—A

GEAR

HI

LO

ONE REVOLUTION
OF POWER WINDOW
MOTOR
amxuun0000004

End Of Sie
POWER RETRACTABLE HARDTOP SWITCH OUTLINE
id091600101900
• The power retractable hardtop electric open/close operation is performed by the power retractable hardtop
open and close switches.
End Of Sie
POWER RETRACTABLE HARDTOP SWITCH CONSTRUCTION/OPERATION
id091600102000
• The power retractable hardtop switch is integrated with the hazard warning switch.
• The operational switch operates at the point the switch has been continuously pressed on for 100 ms.
• Depending on the power retractable hardtop position and operation conditions, the operation switch input
reception is restricted as follows:
Power retractable hardtop Power
position retractable
Power Power
hardtop
Power Power retractable retractable
operation after Restriction
retractable retractable hardtop open hardtop close
switch
hardtop hardtop switch input switch input
determined to
position operation be on/off
power retractable hardtop open
Full open Stopped ON OFF Stop
switch inoperative
power retractable hardtop close
Full closed Stopped OFF On operation Stop
switch inoperative
ON at the same ON at the same power retractable hardtop open
All positions Stopped Stop
time time and close switch inoperative
Operates power retractable hardtop close
Full open Stopped During ON Stop
afterward switch inoperative
Operates power retractable hardtop open
Full closed Stopped During ON Stop
afterward switch inoperative

09-16–18
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 EXTERIOR TRIM
Power retractable hardtop Power
position retractable
Power Power
hardtop
Power Power retractable retractable
operation after Restriction
retractable retractable hardtop open hardtop close
switch
hardtop hardtop switch input switch input
determined to
position operation be on/off
Except fully During open On operation power retractable hardtop open
During ON operations stop
open operation afterward and close switch inoperative
Except fully During close On operation power retractable hardtop open
During ON operations stop
closed operation afterward and close switch inoperative

• Once the operation switch has operated, the next operation switch does not operate unless an off-operation for
the switch operation is detected.
End Of Sie
ON-BOAD DIAGNOSTIC OUTLINE
id091600102100
Special Features
• The power retractable hardtop has an on-board diagnostic function to facilitate system diagnosis.
• The on-board diagnostic function consists of the following functions: a malfunction detection function, which
detects overall malfunctions in the power retractable hardtop-related parts; a memory function, which stores
detected DTCs; a display function, which indicates system malfunctions by DTC display; and a PID/data
monitoring function, which reads out specific input/output signals.
• Using the mazda modular diagnostic system (M-MDS), DTCs can be read out and cleared, and the PID/data
monitoring function can be activated.
End Of Sie
ON-BOAD DIAGNOSTIC PID DATE MONITOR FUNCTION
id091600102200
On-board Diagnostic Function
Malfunction detection function
• Detects overall malfunctions in the power retractable hardtop-related parts.

Mazda MX-5
Memory function
• Stores malfunctions in the power retractable hardtop-related parts detected by the malfunction detection
function, and the stored malfunction contents are not cleared even if the ignition switch is turned to the LOCK
position or the negative battery cable is disconnected.
DTC table
DTC Malfunction indication
Mazda modular Description Power retractable
diagnostic system (M- Buzzer sound hardtop indicator
MDS) display light flashing
Power retractable hardtop control module internal
B1342 None None
malfunction
Flashing pattern for a
Operation reject
B1317 Battery power supply voltage increases (17.5 V or more) power retractable
sound*1
hardtop malfunction*1
Flashing pattern for a
Operation reject
B1318 Battery power supply voltage decreases (less than 7.5 V) power retractable
sound*1
hardtop malfunction*1
Flashing pattern for a
Operation reject
B296D Hall sensor low power supply voltage power retractable
sound
hardtop malfunction
Flashing pattern for a
Door glass communication error (during power
U0030 None power retractable
retractable hardtop operation)
hardtop malfunction
Flashing pattern for a
Door glass communication error (during power
U0031 None power retractable
retractable hardtop not operation)
hardtop malfunction
Flashing pattern for a
Operation reject
B296A Roof motor pulse signal error (RH) power retractable
sound
hardtop malfunction
Flashing pattern for a
Operation reject
U294B Roof motor pulse signal error (LH) power retractable
sound
hardtop malfunction

09-16–19
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 EXTERIOR TRIM
DTC Malfunction indication
Mazda modular Description Power retractable
diagnostic system (M- Buzzer sound hardtop indicator
MDS) display light flashing
Flashing pattern for a
Operation reject
B293C Deck panel motor pulse signal error (RH) power retractable
sound
hardtop malfunction
Flashing pattern for a
Operation reject
B293B Deck panel motor pulse signal error (LH) power retractable
sound
hardtop malfunction
Flashing pattern for a
Operation reject
B293E Roof motor circuit malfunction (RH) power retractable
sound
hardtop malfunction
Flashing pattern for a
Operation reject
B293D Roof motor circuit malfunction (LH) power retractable
sound
hardtop malfunction
Flashing pattern for a
Operation reject
B294C Deck panel motor circuit malfunction (RH) power retractable
sound
hardtop malfunction
Flashing pattern for a
Operation reject
B293F Deck panel motor circuit malfunction (LH) power retractable
sound
hardtop malfunction
Flashing pattern for a
Roof motor opening angle does not match (Pulse count Operation reject
B294D power retractable
number do not match) sound
hardtop malfunction
Flashing pattern for a
Deck panel motor opening angle does not match (Pulse Operation reject
B294E power retractable
count number do not match) sound
hardtop malfunction
Power retractable hardtop/deck panel limit switch Operation reject Flashing pattern for a
B294F power retractable
malfunction sound*2 hardtop malfunction
Flashing pattern for a
B296B Top lock switch malfunction None power retractable
hardtop malfunction
Operation reject Flashing pattern for a
B296C Power retractable hardtop switch malfunction power retractable
sound*2 hardtop malfunction
Operation reject Flashing pattern for a
U0073 CAN system communication error power retractable
sound*2 hardtop malfunction
Operation reject Flashing pattern for a
U0100 Communication error to PCM power retractable
sound*2 hardtop malfunction
Operation reject Flashing pattern for a
U0101 Communication error to TCM power retractable
sound*2 hardtop malfunction
Operation reject Flashing pattern for a
U2197 Vehicle speed signal communication error power retractable
sound*2 hardtop malfunction

*1 : No buzzer sound and power retractable hardtop indicator light illumination if the power retractable hardtop
operation is inhibited while it is not operating.
*2 : No buzzer sound except when the power retractable hardtop switch is turned on.

09-16–20
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 EXTERIOR TRIM
PID/Data Monitor Function
• The PID/data monitor function is used for optionally selecting input/output signal monitor items preset in the
power retractable hardtop control module and reading them out in real-time.
• Use the mazda modular diagnostic system (M-MDS) to read the PID/data monitor.
PID/data monitor table
PID name Unit/
Data contents Terminal
(definition) Operation
DTC_CNT Number of continuous DTCs − −
VPWR Module Supply Voltage V 1X
VSS Vehicle speed MPH/KPH −
RHT_OP Power Retractable Hardtop Open Position Sensor On/Off 1T
RHT_CL Power Retractable Hardtop Closed Position Sensor On/Off 1R
DECK_OP Deck Open Position Sensor On/Off 3F
DECK_CL Deck Close Position Sensor On/Off 3O
SW_OP Power Retractable Hardtop Open Switch On/Off 1H
SW_CL Power Retractable Hardtop Close Switch On/Off 1H
SW_STRIKER Top Lock Switch On/Off 1D
SW_TRUNK Trunk Switch On/Off 1F
TR_OP_CTL Trunk Opener Control On/Off −
Indicator power retractable hardtop Indicator Light On/Off 2C

End Of Sie

Mazda MX-5

09-16–21
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 INSTRUMENTATION/DRIVER INFO.
09-22 INSTRUMENTATION/DRIVER INFO.
INSTRUMENT CLUSTER POWER RETRACTABLE HARDTOP
OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . 09-22–1 WARNING ALARM
INSTRUMENT CLUSTER CONSTRUCTION/OPERATION . . . . . . . 09-22–2
SPECIFICATIONS . . . . . . . . . . . . . . . . . 09-22–1 System Wiring Diagram . . . . . . . . . . . . 09-22–2
POWER RETRACTABLE HARDTOP Operation . . . . . . . . . . . . . . . . . . . . . . . 09-22–2
WARNING ALARM OUTLINE . . . . . . . . 09-22–1

End of Toc
INSTRUMENT CLUSTER OUTLINE
NG: INSTRUMENT CLUSTER

id092200100200
• Due to the adoption of the power retractable hardtop, the power retractable hardtop warning alarm has been
added.
End Of Sie
INSTRUMENT CLUSTER SPECIFICATIONS
id092200101100

Item Specification
Warning alarms
Sound frequency (Hz) 1,900
ON
Operation t : approx. 0.25 s
start sound OFF
t

Operation ON
complete t : approx. 1 s
Power retractable hardtop warning sound OFF t
alarm Sound cycle
ON
Operation

Mazda MX-5
t : approx. 0.1 s
reject sound OFF t t

ON
t 1 : approx. 0.12 s
Warning OFF t 2 : approx. 0.06 s
t1
t2

End Of Sie
POWER RETRACTABLE HARDTOP WARNING ALARM OUTLINE
id092200110200
• Alerts the power retractable hardtop system operation according to a signal from the power retractable hardtop
control module.
End Of Sie

09-22–1
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 INSTRUMENTATION/DRIVER INFO.
POWER RETRACTABLE HARDTOP WARNING ALARM CONSTRUCTION/OPERATION
id092200110300
System Wiring Diagram

IG1 B+

INSTRUMENT CLUSTER
1G 1C

MICROCOMPUTER
BUZZER
AND
CAN CONTROL
CIRCUIT

1L 1J 1E

POWER RETRACTABLE
HARDTOP CONTROL MODULE

amxuun0000003

Operation
Operation start sound
• A buzzer in the instrument cluster sounds if both of the following two conditions are met:
— Power retractable hardtop operation conditions are met.
— The power retractable hardtop (open/close) switch is pressed.

Operation complete sound

• A buzzer sounds when the power retractable hardtop open or close operation is completed.

Operation reject sound

• A buzzer in the instrument cluster sounds if any of the following conditions are met:
— The power retractable hardtop operation conditions are not met when the power retractable hardtop (open/
close) switch is pressed.
— The power retractable hardtop (open/close) switch is pressed with the power retractable hardtop system
DTC detected.
— The power retractable hardtop (open/close) switch is pressed when the power retractable hardtop is fully
closed and the system DTC is stored.
— Power retractable hardtop operation conditions are not met during power retractable hardtop operation.
— An power retractable hardtop system DTC is detected during power retractable hardtop operation.

Warning
• A buzzer in the instrument cluster sounds if any of the following conditions are met with the power retractable
hardtop half open.
— Vehicle speed signal is input.
— The selector lever is in any position except P or N (AT vehicles).
— The selector lever is not in neutral (neutral switch normal condition) (MT vehicles).
End Of Sie

09-22–2
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 CONTROL SYSTEM
09-40 CONTROL SYSTEM
CONTROLLER AREA NETWORK (CAN) CAN SYSTEM WIRING DIAGRAM . . . . . 09-40–2
SYSTEM OUTLINE . . . . . . . . . . . . . . . . 09-40–1 CAN SYSTEM DESCRIPTION . . . . . . . . . 09-40–2
CAN SYSTEM CAN Signal-Chart . . . . . . . . . . . . . . . . . 09-40–2
STRUCTURAL VIEW . . . . . . . . . . . . . . 09-40–1 On-Board Diagnostic Function . . . . . . . 09-40–3

End of Toc
CONTROLLER AREA NETWORK (CAN) SYSTEM OUTLINE
NG: CAN SYSTEM

id094000101300
• Due to the adoption of the power retractable hardtop control module, the CAN system has been changed.
• Twisted-pair wiring is used for connections between the following modules. (Each electrical module hereafter
referred to as a CAN system-related module):
— PCM
— TCM (AT)
— DSC HU/CM (with DSC)
— ABS HU/CM (with ABS)
— Keyless control module (with advanced keyless system)
— Steering angle sensor (with DSC)
— Instrument cluster
— Power retractable hardtop control module (with power retractable hardtop)
• With an on-board diagnostic function included for each multiplex module, display of DTCs using the Mazda
Modular Diagnostic System (M-MDS) has improved serviceability.
End Of Sie
CAN SYSTEM STRUCTURAL VIEW
id094000101100

DSC HU/CM (WITH DSC) KEYLESS TCM (AT)

ABS HU/CM (WITH ABS) CONTROL MODULE INSTRUMENT CLUSTER

Mazda MX-5
STEERING ANGLE
PCM SENSOR (WITH DSC)

POWER RETRACTABLE
HARDTOP CONTROL MODULE
(WITH POWER RETRACTABLE
HARDTOP)

amxuun0000000

End Of Sie

09-40–1
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 CONTROL SYSTEM
CAN SYSTEM WIRING DIAGRAM
id094000101200

WITHOUT POWER RETRACTABLE HARDTOP

KEYLESS STEERING
CONTROL MODULE ANGLE
DSC HU/CM ABS HU/CM (WITH ADVANCED SENSOR
(WITH DSC) (WITH ABS) KEYLESS SYSTEM) (WITH DSC)
X W Z Y 4AA 4Z E F

1AM 1J
INSTRUMENT
PCM
CLUSTER
1AI 1L

1G 1C F E
TCM (AT) DLC-2 : CAN_H
TWISTED PAIR
: CAN_L

KEYLESS STEERING
WITH POWER RETRACTABLE HARDTOP CONTROL MODULE ANGLE
(WITH ADVANCED SENSOR
KEYLESS SYSTEM) (WITH DSC)
4AA 4Z E F
DSC HU/CM ABS HU/CM
(WITH DSC) (WITH ABS)
1J
X W Z Y
INSTRUMENT
CLUSTER
1AM 1L

PCM
1AI F E

DLC-2
1G 1C 3S 3U
TCM (AT) POWER
TWISTED PAIR RETRACTABLE
HARDTOP
CONTROL MODULE

amxuun0000000

End Of Sie
CAN SYSTEM DESCRIPTION
id094000101000
CAN Signal-Chart

OUT: Output (sends signal)

IN: Input (receives signal)
Multiplex module
Power
Signal ABS HU/ Keyless Steering retractable
Instrument
PCM TCM CM or DSC control angle hardtop
cluster
HU/CM module sensor control
module
Engine speed OUT IN IN (DSC) IN – IN –
OUT – IN IN IN
Vehicle speed – –
IN OUT – – –
Engine coolant temperature OUT IN – – – IN –
Engine torque OUT IN IN (DSC) – – – –
Accelerator pedal position OUT IN IN (DSC) – – – –
TP OUT IN IN (DSC) – – – –
Intake air temperature OUT IN – – – – –
Ignition timing OUT IN – – – – –
Engine specification OUT – IN – – – –

09-40–2
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 CONTROL SYSTEM
Multiplex module
Power
Signal ABS HU/ Keyless Steering retractable
Instrument
PCM TCM CM or DSC control angle hardtop
cluster
HU/CM module sensor control
module
Brake pedal position OUT IN – – – – –
OUT IN IN
Tire circumference (front/rear) – – – –
IN – OUT
Immobilizer-related OUT IN
– – – – –
information IN OUT
OUT – IN
Travelled distance – – – –
IN OUT IN
Fuel injection amount OUT – – – – IN –
OUT –
MIL on request – – – IN –
– OUT
Generator warning light on
OUT – – – – IN –
request
Cruise main/set indicator light
OUT – – – – IN –
on request
Transmission type OUT – IN – – – IN
AT gear position/selector lever
IN OUT – – – IN IN
position (AT)
Neutral switch status (MT) OUT – – – – – IN
ATF temperature (AT) IN OUT – – – – –
Desired gear position (AT) IN OUT IN (DSC) – – – –
TCC status (AT) IN OUT IN (DSC) – – – –
AT warning light on request
IN OUT – – – IN –

Mazda MX-5
(AT)
Brake system status (EBD/
IN – OUT – – – –
ABS/DSC)
Wheel speed (LF, RF, LR, RR) IN – OUT – – – –
Brake system warning light on
– – OUT – – IN –
request
ABS warning light on request – – OUT – – IN –
DSC indicator light on request – – OUT (DSC) – – IN –
DSC OFF light on request – – OUT (DSC) – – IN –
Security light on request – – – OUT – IN –
Steering angle sensor status – – IN (DSC) – OUT – –
Fuel tank level IN – – – – OUT –
Parking brake position – – IN (DSC) – – OUT –
Power retractable hardtop
– – – – – IN OUT
warning alarm request
Power retractable hardtop
– – – IN – – OUT
information
Trunk lid operation – – – IN – – OUT
Deck panel limit switch (close
– – – IN – – OUT
switch) status

On-Board Diagnostic Function

• Some DTCs have been changed.
• The on-board diagnostic function is incorporated into the following module:
— PCM
— TCM (AT)
— DSC HU/CM (with DSC)
— ABS HU/CM (with ABS)
— Keyless control module
— Steering angle sensor (with DSC)
— Instrument cluster
— Power retractable hardtop control module (with power retractable hardtop)
• Using the Mazda Modular Diagnostic System (M-MDS), DTCs can be read out and deleted.

09-40–3
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 CONTROL SYSTEM
Block diagram

WITHOUT POWER RETRACTABLE HARDTOP

KEYLESS STEERING
CONTROL MODULE ANGLE
DSC HU/CM ABS HU/CM (WITH ADVANCED SENSOR
(WITH DSC) (WITH ABS) KEYLESS SYSTEM) (WITH DSC)
X W Z Y 4AA 4Z E F

1AM 1J
INSTRUMENT
PCM
CLUSTER
1AI 1L

1G 1C F E
TCM (AT) DLC-2 : CAN_H
TWISTED PAIR
: CAN_L

KEYLESS STEERING
WITH POWER RETRACTABLE HARDTOP CONTROL MODULE ANGLE
(WITH ADVANCED SENSOR
KEYLESS SYSTEM) (WITH DSC)
4AA 4Z E F
DSC HU/CM ABS HU/CM
(WITH DSC) (WITH ABS)
1J
X W Z Y
INSTRUMENT
CLUSTER
1AM 1L

PCM
1AI F E

DLC-2
1G 1C 3S 3U
TCM (AT) POWER
TWISTED PAIR RETRACTABLE
HARDTOP
CONTROL MODULE

amxuun0000000

09-40–4
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 CONTROL SYSTEM
Self-malfunction diagnostic function
• The self-malfunction diagnostic function determines that there is a malfunction, and outputs a signal, as a DTC,
to the DLC-2. The DTC can be read out using the Mazda Modular Diagnostic System (M-MDS).
DTC table
DTC Malfunction location DTC output module
• PCM
• TCM
• DSC HU/CM
• ABS HU/CM
U0073 CAN system communication error
• Power retractable hardtop control
module
• Keyless control module
• Instrument cluster
• TCM
• DSC HU/CM
• Power retractable hardtop control
U0100 Communication error to PCM
module
• Keyless control module
• Instrument cluster
• PCM
• DSC HU/CM
U0101 Communication error to TCM • Power retractable hardtop control
module
• Instrument cluster
• PCM
U0121 Communication error to DSC HU/CM or ABS HU/CM
• Instrument cluster
• PCM
U0155 Communication error to instrument cluster
• DSC HU/CM
Abnormal message from power retractable hardtop control
U0207 Keyless control module
module
U0214 Communication error to keyless control module Instrument cluster

Mazda MX-5
U0323 Communication error to instrument cluster Keyless control module
• DSC HU/CM
U1900 Communication error to other module • ABS HU/CM
• Steering angle sensor
• DSC HU/CM
U2023 Abnormal message from PCM • ABS HU/CM
• Keyless control module
U2197 Invalid vehicle speed signal data Power retractable hardtop control module
• Instrument cluster
U2516 CAN system communication error
• Information display

End Of Sie

09-40–5
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