TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
[KA24DE]
3. Perform all voltage measurements with the connector con-
nected. Extend tester probe as shown to perform tests easily. A
´ Open harness securing clip to make testing easier.
´ Use extreme care not to touch 2 pins at one time.
´ Data is for comparison and may not be exact. EC
CAUTION:
Do not use ECM ground terminals when measuring input/output
voltage. Doing so may result in damage to the ECM's transistor. C
Use a ground other than ECM terminals, such as the ground.
G
SEF367I
ECM HARNESS CONNECTOR TERMINAL LAYOUT
H
SEF469X K
ECM INSPECTION TABLE
Specification data are reference values and are measured between each terminal and ground.
L
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
M
EC-61
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
[KA24DE]
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
´ Warm-up condition
´ Idle speed
1 L/R Injector No. 1
SEF472X
2 L/B Injector No. 2
3 Y/B Injector No. 3 BATTERY VOLTAGE
5 L/W Injector No. 4 (11 - 14V)
[Engine is running]
´ Engine speed is 2,000 rpm
SEF473X
[Engine is running]
4 B/W ECM ground Engine ground
´ Idle speed
[Engine is running]
10 - 13V
´ Idle speed
[Engine is running]
6 G IACV-AAC valve ´ Steering wheel is being turned.
´ Air conditioner is operating. 5 -10V
´ Rear window defogger switch is "ON".
´ Light switch is "ON".
BATTERY VOLTAGE
7 W/B Power supply (Backup) [Ignition switch "OFF"]
(11 -14v)
[Engine is running]
8 B/W ECM ground Engine ground
´ Idle speed
9 BATTERY VOLTAGE
R/Y Power supply for ECM [Ignition switch "ON"]
16 (11 - 14v)
[Engine is running]
[Ignition switch "OFF"]
0 -1V
´ For a few seconds after turning ignition switch
ECM relay
11 R/W "OFF"
(Self - shut -off)
[Ignition switch "OFF"]
BATTERY VOLTAGE
A few seconds passed after turning ignition switch
(11 -14V)
"OFF"
EC-62
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
[KA24DE]
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage) A
COLOR
NO.
Approximately 0.3V
EC
[Engine is running]
´ Idle speed
C
SEF058U
12 G/R Ignition signal
Approximately 0.7V D
[Engine is running] E
´ Engine speed is 2,000 rpm
SEF059U F
[Ignition switch "ON"] Approximately 1.0V
Malfunction indicate
13 LG/R [Engine is running] BATTERY VOLTAGE
lamp G
´ Idle speed (11 - 14V)
[Ignition switch "ON"]
´ For 5 seconds after turning ignition switch "ON" Approximately 1V H
14 P/L Fuel pump relay [Engine is running]
[Ignition switch "ON"] BATTERY VOLTAGE
´ 5 seconds after turning ignition switch “ON” (11 - 14V) I
[Ignition switch “OFF”] 0V
15 W/G Ignition switch BATTERY VOLTAGE
[Ignition switch “ON”] J
(11 - 14V)
Approximately 0.7V
K
[Engine is running]
´ Idle speed
L
Tachometer SEF060U
18 W/G (Models with tachome-
ter) Approximately 1.6V
M
[Engine is running]
´ Engine speed is 2,000 rpm
SEF061U
EC-63
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
[KA24DE]
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
Approximately 13V
[Engine is running]
´ Idle speed
SEF470X
19 LG/B Ignition check
Approximately 13V
[Engine is running]
´ Engine speed is 2,000 rpm
SEF471X
[Engine is running]
Approximately 0V
Heated oxygen sensor ´ Engine speed is below 3,000 rpm.
20 LG
heater [Engine is running] BATTERY VOLTAGE
´ Engine speed is above 3,000 rpm. (11 - 14V)
[Engine is running]
´ Both air conditioner switch and blower fan 0 - 1V
23 B/W Air conditioner relay switch are "ON". (Compressor operates)
[Engine is running] BATTERY VOLTAGE
´ Air conditioner switch is "OFF". (11 - 14V)
[Engine is running]
´ Warm-up condition 0.9 - 1.3V
´ Idle speed
24 W Mass air flow sensor
[Engine is running]
´ Warm-up condition 1.7 - 2.1V
´ Engine speed is 2,500 rpm.
IACV-FICD solenoid
valve [Engine is running]
25 R/B Approximately 0V
(Ambient temperature ´ Idle speed
switch)
Throttle position sensor
26 W [Ignition switch "ON"] Approximately 5V
power supply
Approximately 0 - 4.8V
Engine coolant temper-
27 P/B [Engine is running] Output voltage varies with
ature sensor
engine coolant temperature.
[Ignition switch "ON"]
0V
Park/Neutral position ´ Neutral position)
30 OR/B
(PNP) switch [Ignition switch "ON"]
Approximately 5V
´ Except the above gear position
EC-64
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
[KA24DE]
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage) A
COLOR
NO.
Approximately 2.5V
EC
[Engine is running]
´ Warm-up condition
´ Idle speed C
SEF066U
Camshaft position sen-
31 L
sor (POS) (1psignal) Approximately 2.5V D
[Engine is running]
´ Warm-up condition E
´ Engine speed is 2,000 rpm
SEF067U F
32 R [Engine is running] Approximately 0.1V
33 SB Data link connector for ´ Idle speed Approximately 4 -6V
CONSULT G
´ Connect CONSULT and select DATA MONITOR
44 GY/R mode. Approximately 0V
[Ignition switch "ON"]
H
´ Warm-up condition 0.35 - 0.65V
34 Y Throttle position sensor ´ Accelerator pedal released
[Ignition switch "ON"]
Approximately 4.5V I
´ Accelerator pedal fully depressed
[Engine is running]
35 B ECM ground Engine ground
´ Idle speed J
[Engine is running]
36 B Sensors' ground ´ Warm-up condition 0.001 - 0.02V
´ Idle speed K
[Ignition switch “ON”] Approximately 0V
39 G/OR Start signal BATTERY VOLTAGE
[Ignition switch “START”] L
(11 - 14V)
[Engine is running]
Heated oxygen sensor 0 - Approximately 1.0V
40 Y/L ´ After warming up to normal operating tempera-
1 (periodically change) M
ture and engine speed is 2,000 rpm
[Engine is running]
0V
´ Headlamp witch is "OFF"
41 R/L Electrical load signal
[Engine is running] BATTERY VOLTAGE
´ Headlamp switch is "ON" (11 - 14V)
Varies from 0 to 5V
[Ignition switch "ON"]
42 BR/W Vehicle speed sensor ´ Jack up all wheels and run engine at idle in 1st
position.
PBIB0239E
EC-65
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
[KA24DE]
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
0V
Power steering oil pres- ´ Steering wheel is being turned
43 OR
sure switch [Engine is running]
Approximately 5V
´ Steering wheel is not being turned
Approximately 0.4V
[Engine is running]
´ Warm-up condition
´ Idle speed
SEF064U
Camshaft position sen-
45 P
sor (REF) (180p signal) Approximately 0.4V
[Engine is running]
´ Warm-up condition
Engine speed is 2,000 rpm
SEF065U
[Engine is running]
´ Both air conditioner switch and blower fan Approximately 0V
46 BR/Y Air conditioner switch switch are "ON" (Compressor operates)
[Engine is running] BATTERY VOLTAGE
´ Air conditioner switch is "OFF" (11 -14V)
[Engine is running]
47 W Knock sensor ´ Warm-up condition Approximately 2.5V
´ Idle speed
[Engine is running]
48 B ECM ground Engine ground
´ Idle speed
EC-66
