"2019” SEMINAR INFORMATION 53

THE FW6A-EL TRANSMISSION

MAZDA'S SKYACTIV DRIVE TRANSMISSION WITH INTERNAL TCM

Vehicle Application:
2012 + Mazda 3 L4 2.0L Skyactiv-G
2013 + Mazda CX-5 2.0L Skyactiv-G AWD or FWD
2014 + Mazda 3 L4 2.5L Skyactiv-G
2014 + Mazda CX-5 2.5L Skyactiv-G AWD or FWD
2014 + Mazda 6 L4 2.5L Skyactiv-G

SKYACTIV-DRIVE is a new-generation highly-efficient automatic transmission that achieves excellent torque

transfer efficiency through a wider lock-up range and features the best attributes of all transmission types. It is the
ideal AT with all the advantages of the various types of transmissions:
？It combines all the advantages of conventional automatic transmissions, continuously variable transmissions,
and dual clutch transmissions
？A dramatically widened lock-up range improves torque transfer efficiency and realizes a direct driving feel that
is equivalent to a manual transmission
？A 4-to-7 percent improvement in fuel economy compared to the current transmission
All the Advantages of Conventional Step CVT, Dual Clutch, and Step AT Automatic transmissions (AT) can be
categorized into three types:
？CVT: generates various gear reduction ratios with a pair of pulleys
？Dual Clutch: utilizes 2 separate clutches for odd and even gear sets.
？Conventional AT: generates various gear reduction ratios with planetary gear sets
The key requirements for ATs are “good fuel economy”, “quick start-up” (including hill climbing), “direct feel”
and “smooth shifting”. This information was provided by Mazda. Visit:
http://www.mazda.com/en/innovation/technology/skyactiv/skyactiv-drive/
Also visit: https://www.youtube.com/watch?v=vD1mPPkuRIE to learn about how the SPCCI engine works.
Copyright © 2019 ATSG

Automatic Transmission Service Group

54 "2019” SEMINAR INFORMATION
FW6A-EL
COMPONENT LOCATION AND APPLICATION CHART

R-3-5 2-6 Low L/R Low High TC

Brake Brake OWC Brake Clutch Clutch Clutch
Operation of
Powertrain Parts Operation of Shift Solenoids
Low and Reverse Brake

TCC Control Solenoid

Low One-Way Clutch

Shift Solenoid No. 1

Shift Solenoid No. 2

Shift Solenoid No. 3

Shift Solenoid No. 4

Position

Gear Gear

ON/OFF Solenoid
Mode Position Ratio
High Clutch

R-3-5 Brake
Low Clutch

2-6 Brake
TCC

P - - - X CLOSE CLOSE CLOSE OPEN CLOSE OFF

R - Reverse 3.893 X X CLOSE CLOSE OPEN OPEN CLOSE OFF
N -
1GR
-
3.552 X X
X
X X
CLOSE CLOSE CLOSE OPEN CLOSE OFF
OPEN CLOSE CLOSE OPEN OPEN OFF
2GR 2.022 X X X OPEN OPEN CLOSE CLOSE OPEN ON
3GR 1.452 X X X OPEN CLOSE OPEN CLOSE OPEN ON
D/M NORMAL
4GR 1.000 X X X OPEN CLOSE CLOSE OPEN OPEN ON
5GR 0.708 X X X CLOSE CLOSE OPEN OPEN OPEN ON
6GR 0.599 X X X CLOSE OPEN CLOSE OPEN OPEN ON

X : Operating
X : Transmit torque only during driving operation
OPEN: Engages the line pressure to the clutch
CLOSE: Drains the clutch pressure
ON: Engages the output port and the supply port
OFF: Engages the output port and the drain port (Drains the output port)
Copyright © 2019 ATSG
Figure 1
Automatic Transmission Service Group
 "2019” SEMINAR INFORMATION 55
FW6A-EL
SOLENOID IDENTIFICATION

1 2 3 4 5 6 7
(PCS) (SS3) (SS2) (TCC) (SS4) (SS1) (On/Off)

1. Pressure Control Solenoid - Normally open type Linear Solenoid (Controls Main Line Pressure) 5-7 ohms
2. Shift Solenoid Number 3 - Normally open type Linear Solenoid (Controls R-3-5 Clutch Pressure)
3. Shift Solenoid Number 2 - Normally closed type Linear Solenoid (Controls 2-6 Clutch Pressure)
4. Converter Clutch Solenoid - Normally closed type Linear Solenoid
5. Shift Solenoid Number 4 - Normally open type Linear Solenoid (Controls High & Reverse Clutch Pressure)
6. Shift Solenoid Number 1 - Normally closed type Linear Solenoid (Controls Low Clutch Pressure)
7. On/Off Solenoid - Normally open type On/Off Solenoid (Strokes Shift Valves) 11-14 ohms

All Linear Solenoids measure between 5-7Ù at 76°F

On/Off Solenoid measures between 11-14Ù at 76°F
Copyright © 2019 ATSG
Figure 2
Automatic Transmission Service Group
56 "2019” SEMINAR INFORMATION
FW6A-EL
VALVE BODY COMPONENT IDENTIFICATION

TCM

Output Shaft
Transmission
Speed Sensor
Fluid Temperature
Sensor (TFT) is built
into the Coupler
Component

Turbine/Input Shaft
Speed Sensor

Transaxle
Range Sensor

Pressure Switch LC HC Pressure Switch

Manifold A Manifold B
Low High
Clutch Clutch

2-6 R-3-5

R-3-5
Brake

2-6
Brake

Pressure Switch # 1 is built into the Pressure Switch "B" Manifold - Low Clutch
Pressure Switch # 2 is built into the Pressure Switch "A" Manifold - 2-6 Clutch
Pressure Switch # 3 is built into the Pressure Switch "A" Manifold - R-3-5 Clutch
Pressure Switch # 4 is built into the Pressure Switch "B" Manifold - High Clutch
When engagement pressure is supplied to the applicable clutch and brake, the oil pressure switch
contact point closes. The TCM detects that clutch engagement pressure is supplied to the applicable
clutch/brake by opening/closing the oil pressure switch contact point. Copyright © 2019 ATSG
Figure 3
Automatic Transmission Service Group
 "2019” SEMINAR INFORMATION 57
FW6A-EL
VALVE AND ACCUMULATOR IDENTIFICATION
MIDDLE VALVE BODY
VALVE I.D.

1.Accumulator Switch Valve

Spring:
1.145" x 0.342" x 0.030" x 12c

2.EPC Limit Valve

6 Spring:
1.145" x 0.342" x 0.030" x 12

3. Pressure Regulator Valve

4 Spring:
2 5 1.870" x 0.500" x 0.045" x 11c

4. Cooler Pressure Reg. Valve

1 3 Spring:
1.090" x 0.350" x 0.034" x 12c

5.Select Valves 1 and 2

Spring:
1.075" x 0.418" x 0.038" x 10c

6.Low Clutch Quick Dump Valve

Spring:
1.138" x 0.342" x 0.038" x 11.5c

7. TC Limit Valve
Spring:
1.340" x 0.342" x 0.042" x 14.5c

Disclaimer: Valve names have been provided by ATSG based on

their function observed through hydraulic schematic produced
by ATSG. Presently, Mazda does not provide any internal valve
body information. Names are therefore subject to change should
Mazda decide to provide such information.

Copyright © 2019 ATSG

Figure 4
Automatic Transmission Service Group
 58 "2019” SEMINAR INFORMATION
FW6A-EL
VALVE AND ACCUMULATOR IDENTIFICATION
UPPER VALVE BODY
VALVE & ACC. I.D.

1. Manual Valve
2. Failsafe Valve
Spring:
0.825" x 0.344" x 0.032" x 9.5c

3. Low Clutch Accumulator

Outer Spring:
5 1.188" x 0.582" x 0.090" x 8.5c
4 Inner Spring:
1.383" x 0.364" x 0.052" x 15c
1
4. 2-6 Brake Quick Dump Valve
3 Spring:
1.608" x 0.343" x 0.052" x 18.5c
2
5. 3-5-R Brake Accumulator
Outer Spring:
1.393" x 0.672" x 0.138" x 8c
Inner Spring:
1.544" x 0.356" x 0.060" x 16c

6. 2-6 Brake Accumulator

Outer Spring:
1.422" x 0.672" x 0.125" x 8c
Inner Spring:
1.586" x 0.377" x 0.060" x 18c

7. N-R Accumulator
Outer Spring:
9 2.046" x 0.657" x 0.082" x 12.5c
Inner Spring:
2.048" x 0.450" x 0.058" x 18c
8
8. N-D Accumulator
Outer Spring:
6 7 2.650" x 0.672" x 0.068" x 8c
Inner Spring:
Disclaimer: Valve names have been provided by ATSG based on 2.654" x 0.491" x 0.048" x 20c
their function observed through hydraulic schematic produced
by ATSG. Presently, Mazda does not provide any internal valve 9. L-R Brake Accumulator
body information. Names are therefore subject to change should Outer Spring:
Mazda decide to provide such information. 1.393" x 0.582" x 0.110" x 9c
Inner Spring:
1.565" x 0.348" x 0.050" x 20c
Copyright © 2019 ATSG
Figure 5
Automatic Transmission Service Group
60 "2019” SEMINAR INFORMATION
FW6A-EL
SMALL PARTS LOCATION

1. Differential Lube Spring and Ball

Spring: 0.718" x 0.285" x 0.018" x 16c
Ball: 0.250"

2. 12 Solenoid Filters

3. 4 Pressure Dump Check Balls

Ball: 0.375"

4. D-N Control Ball

Ball: 0.250"

Copyright © 2019 ATSG

Figure 6
Automatic Transmission Service Group
 "2019” SEMINAR INFORMATION 61
FW6A-EL
LOW ONE-WAY-CLUTCH

el Lo
he cks
e ew
Fr

When viewing the Low One-Way-Clutch from the rear, the planetary and inner
race will lock to the clock and rotate counter clockwise.

Copyright © 2019 ATSG

Figure 7
Automatic Transmission Service Group
62 "2019” SEMINAR INFORMATION
FW6A-EL
CASE PASSAGE IDENTIFICATION

TCC TC TC High Low To

Apply Charge Return Clutch Clutch H/E

H/E
Return
Pipe for
Rear Lube

L/R Brake

Diff
Lube

R-3-5 2-6 Brake Blocked

Reverse Brake by Back
Cover

Copyright © 2019 ATSG

Figure 8
Automatic Transmission Service Group
64 "2019” SEMINAR INFORMATION
FW6A-EL
DIAGNOSTIC TROUBLE CODES
DTC CIRCUIT MALFUNCTION

P0218 AUTOMATIC TRANSAXLE PROTECTION CONTROL

P0500 VEHICLE SPEED SIGNAL CIRCUIT MALFUNCTION
P0666 ECU INTERNAL TEMPERATURE SENSOR
P0667 ECU INTERNAL TEMPERATURE SENSOR/PERFORMANCE PROBLEM
P06B8 NVRAM MALFUNCTION
P0706 TRANSAXLE RANGE SENSOR RANGE/PERFORMANCE PROBLEM
P0707 TRANSAXLE RANGE SENSOR CIRCUIT LOW INPUT
P0708 TRANSAXLE RANGE SENSOR CIRCUIT HIGH INPUT
P0711 TFT SENSOR RANGE/PERFORMANCE PROBLEM
P0712 TFT SENSOR CIRCUIT LOW INPUT
P0713 TFT SENSOR CIRCUIT HIGH INPUT
P0715 TURBINE/INPUT SHAFT SPEED SENSOR/SENSOR OUTPUT RANGE MALFUNCTION
P0716 TURBINE/INPUT SHAFT SPEED SENSOR RANGE/PERFORMANCE PROBLEM
P0717 OPEN CIRCUIT IN TURBINE/INPUT SHAFT SPEED SENSOR CIRCUIT
P0720 OUTPUT SHAFT SPEED SENSOR RANGE/PERFORMANCE PROBLEM
P0721 OUTPUT SHAFT SPEED SENSOR/SENSOR OUTPUT RANGE MALFUNCTION
P0722 OPEN CIRCUIT IN OUTPUT SHAFT SPEED SENSOR CIRCUIT
P0729 6 GR INCORRECT RATIO
P0731 1GR INCORRECT RATIO
P0732 2GR INCORRECT RATIO
P0733 3GR INCORRECT RATIO
P0734 4GR INCORRECT RATIO
P0735 5GR INCORRECT RATIO
P0736 GEAR REVERSE INCORRECT RATIO
P073D NEUTRAL INCORRECT RATIO
P0741 TCC CONTROL SOLENOID STUCK OFF
P0743 TCC CONTROL SOLENOID CIRCUIT MALFUNCTION
P0746 PRESSURE CONTROL SOLENOID STUCK OFF
P0748 PRESSURE CONTROL SOLENOID CIRCUIT MALFUNCTION
P0751 SHIFT SOLENOID NO.1 STUCK OFF
P0752 SHIFT SOLENOID NO.1 STUCK ON
P0753 SHIFT SOLENOID NO.1 CIRCUIT MALFUNCTION
P0756 SHIFT SOLENOID NO.2 STUCK OFF
P0757 SHIFT SOLENOID NO.2 STUCK ON
P0758 SHIFT SOLENOID NO.2 CIRCUIT MALFUNCTION
P0761 SHIFT SOLENOID NO.3 STUCK OFF
P0762 SHIFT SOLENOID NO.3 STUCK ON
P0763 SHIFT SOLENOID NO.3 CIRCUIT MALFUNCTION
P0766 SHIFT SOLENOID NO.4 STUCK OFF
P0767 SHIFT SOLENOID NO.4 STUCK ON
P0768 SHIFT SOLENOID NO.4 CIRCUIT MALFUNCTION
P0771 ON/OFF SOLENOID STUCK OFF
P0772 ON/OFF SOLENOID STUCK ON
P0773 ON/OFF SOLENOID CIRCUIT MALFUNCTION
P0780 GEAR SHIFTING MALFUNCTION
P079A SHIFT SOLENOID NO.3 STUCK OFF/ON/OFF SOLENOID STUCK ON
Copyright © 2019 ATSG
Figure 9
Automatic Transmission Service Group
 "2019” SEMINAR INFORMATION 65
FW6A-EL
DIAGNOSTIC TROUBLE CODES
DTC CIRCUIT MALFUNCTION

P0819 M POSITION SWITCH/UP SWITCH/DOWN SWITCH SIGNAL ERROR

P0842 OIL PRESSURE SWITCH NO.1 STUCK ON
P0843 OIL PRESSURE SWITCH NO.1 STUCK OFF
P0847 OIL PRESSURE SWITCH NO.2 STUCK ON
P0848 OIL PRESSURE SWITCH NO.2 STUCK OFF
P0872 OIL PRESSURE SWITCH NO.3 STUCK ON
P0873 OIL PRESSURE SWITCH NO.3 STUCK OFF
P0877 OIL PRESSURE SWITCH NO.4 STUCK ON
P0878 OIL PRESSURE SWITCH NO.4 STUCK OFF
P0882 TCM POWER SUPPLY VOLTAGE LOW
P0883 TCM POWER SUPPLY VOLTAGE HIGH
P1728 CLUTCH SLIPPAGE
P1738 AUTOMATIC TRANSAXLE INTERNAL MALFUNCTION
P1784 HI CUT VALVE STUCK OFF/R-3-5 CUT VALVE STUCK ON
P2530 IGNITION SWITCH STUCK OFF
P2855 LOW CLUTCH HYDRAULIC CIRCUIT/SEALING MALFUNCTION
U0073 CAN SYSTEM COMMUNICATION ERROR
U0100 CAN SYSTEM COMMUNICATION ERROR
U0121 CAN SYSTEM COMMUNICATION ERROR
U0131 CAN SYSTEM COMMUNICATION ERROR
U0155 CAN SYSTEM COMMUNICATION ERROR
U0074 CAN SYSTEM COMMUNICATION ERROR (LOCAL CAN BETWEEN TCM AND PCM)
U0115 COMMUNICATION ERROR TO PCM (LOCAL CAN BETWEEN TCM AND PCM)
U0442 INVALID DATA RECEIVED Copyright © 2019 ATSG
Figure 10

Automatic Transmission Service Group