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TERMI-
NAL
NO.
WIRE
COLOR
ITEM CONDITION DATA (DC Voltage)
14 W/R
Electronic controlled
engine mount-2
[Engine is running]
I Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
I Except the above
0-1V
18 PU/W
Engine coolant tem-
perature sensor signal
output
[Engine is running]
I Idle speed
0 - 12V
Output voltage varies with
engine coolant temperature.
21 B/R Air conditioner relay
[Engine is running]
I Both A/C switch and blower switch are “ON”
(Compressor is operating).
0 - 1.0V
[Engine is running]
I A/C switch is “OFF”.
BATTERY VOLTAGE
(11 - 14V)
23 B/P Fuel pump relay
[Ignition switch “ON”]
I For 1 second after turning ignition switch “ON”
[Engine is running]
0 - 1.5V
[Ignition switch “ON”]
I 1 second pressed after turning ignition switch
“ON”
BATTERY VOLTAGE
(11 - 14V)
24 Y ASCD CRUISE lamp
[Ignition switch “ON”]
I CRUISE switch is “ON”.
0V
[Ignition switch “ON”]
I CRUISE switch is “OFF”.
BATTERY VOLTAGE
(11 - 14V)
25 R ASCD SET lamp
[Engine is running]
I SET switch is “ON”.
I ASCD control is operating.
0V
[Engine is running]
I SET or CRUISE switch is “OFF”.
I ASCD control is not operating.
BATTERY VOLTAGE
(11 - 14V)
26 O/R
Throttle control motor
relay
[Ignition switch “OFF”]
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch “ON”] 0 - 1.0V
27 Y/G
VIAS control solenoid
valve
[Engine is running]
I Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
I Engine speed is above 5,000 rpm.
0 - 1.0V
28 OR/G
Vacuum cut valve
bypass valve
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
30 PU A/C cut signal
[Engine is running]
I Air conditioner is operating.
0 - 0.5V
31 R Counter current return [Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
33 LG/B MIL
[Ignition switch “ON”] 0 - 1.0V
[Engine is running]
I Idle speed
BATTERY VOLTAGE
(11 - 14V)
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value (Cont’d)
EC-144
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