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TERMI-
NAL
NO.
WIRE
COLOR
ITEM CONDITION DATA (DC Voltage)
34 W/G Tachometer
[Engine is running]
I Warm-up condition
I Idle speed
7-8V★
SEC992C
[Engine is running]
I Warm-up condition
I Engine speed is 2,500 rpm.
7-8V★
SEC032D
35 BR/R
Cooling fan relay
(LOW)
[Engine is running]
I Cooling fan is operating.
0 - 1.0V
[Engine is running]
I Cooling fan is not operating.
BATTERY VOLTAGE
(11 - 14V)
36 LG
Cooling fan relay
(HIGH)
[Engine is running]
I Cooling fan is operating at high speed.
0 - 1.0V
[Engine is running]
I Cooling fan is not operating.
BATTERY VOLTAGE
(11 - 14V)
38 W/B
ECM relay
(Self shut-off)
[Engine is running]
[Ignition switch “ON”]
I For a few seconds after turning ignition switch
“OFF”
0 - 1.5V
[Ignition switch “ON”]
I A few seconds after turning ignition switch “OFF”
BATTERY VOLTAGE
(11 - 14V)
39 OR/L
Heated oxygen sensor
1 heater (bank 1)
[Engine is running]
I Engine speed is below 3,600 rpm.
0 - 0.5V
[Engine is running]
I Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
40 R/L
Heated oxygen sensor
1 heater (bank 2)
[Engine is running]
I Engine speed is below 3,600 rpm.
0 - 0.5V
[Engine is running]
I Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
41 P/B
Heated oxygen sensor
2 heater (bank 1)
[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)
42 BR/W Start signal
[Ignition switch “ON”] Approximately 0V
[Ignition switch “START”] 9 - 12V
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value (Cont’d)
EC-145
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