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TERMI-
NAL
NO.
WIRE
COLOR
ITEM CONDITION DATA (DC Voltage)
43 R Ignition switch
[Ignition switch “OFF”] 0V
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
44 G/OR PNP switch
[Ignition switch “ON”]
I General position is “P” or “N”.
Approximately 0V
[Ignition switch “ON”]
I Except the above gear position
BATTERY VOLTAGE
(11 - 14V)
45 G/B
Air conditioner switch
signal
[Engine is running]
I Both A/C switch and blower switch are “ON”.
Approximately 0V
[Engine is running]
I A/C switch is “OFF”.
BATTERY VOLTAGE
(11 - 14V)
47 R/L
Heated oxygen sensor
2 heater (bank 2)
[Engine is running]
I Engine speed is below 3,600 rpm.
I After driving for 2 minutes at a speed of 70 km/h
(43 MPH) or more
0 - 0.5V
[Ignition switch “ON”]
I Engine stopped
[Engine is running]
I Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
48 B ECM ground
[Engine is running]
I Idle speed
Engine ground
50 G/Y ASCD steering switch
[Ignition switch “ON”] Approximately 4.0V
[Ignition switch “ON”]
I CRUISE switch is “ON”.
Approximately 0V
[Ignition switch “ON”]
I CANCEL switch is “ON”.
Approximately 1.0V
[Ignition switch “ON”]
I ACCEL RES switch is “ON”.
Approximately 3.0V
[Ignition switch “ON”]
I COAST/SET switch is “ON”.
Approximately 2.0V
51 W/G Electrical load signal
[Engine is running]
I Rear window defogger: ON
I Hi-beam headlamp: ON
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
I Electrical load: OFF
0V
55 R/G Stop lamp switch
Brake pedal is depressed.
BATTERY VOLTAGE
(11 - 14V)
Brake pedal is released. 0V
57 B ECM ground
[Engine is running]
I Idle speed
Engine ground
58 B Sensors’ ground
[Engine is running]
I Warm-up condition
I Idle speed
Approximately 0V
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value (Cont’d)
EC-146
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