Infiniti G35 (V35). Manual — part 318
POWER SUPPLY AND GROUND CIRCUIT
EC-153
C
D
E
F
G
H
I
J
K
L
M
A
EC
Specification data are reference values and are measured between each terminal and ground.
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.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
109
W/L
Ignition switch
[Ignition switch: OFF]
0V
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
111
W
ECM relay
(Self shut-off)
[Engine is running]
[Ignition switch: OFF]
●
For a few seconds after turning ignition
switch OFF
0 - 1.5V
[Ignition switch: OFF]
●
More than a few seconds after turning igni-
tion switch OFF
BATTERY VOLTAGE
(11 - 14V)
119
120
P
L
Power supply for ECM
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
EC-154
POWER SUPPLY AND GROUND CIRCUIT
TBWM0325E
POWER SUPPLY AND GROUND CIRCUIT
EC-155
C
D
E
F
G
H
I
J
K
L
M
A
EC
Specification data are reference values and are measured between each terminal and ground.
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.
Diagnostic Procedure
NBS000NV
1.
INSPECTION START
Start engine.
Is engine running?
Yes or No
Yes
>> GO TO 8.
No
>> GO TO 2.
2.
CHECK ECM POWER SUPPLY CIRCUIT-I
1.
Turn ignition switch OFF and then ON.
2.
Check voltage between ECM terminal 109 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M72, F102
●
Fuse block (J/B) connector M4
●
10A fuse
●
Harness for open or short between ECM and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
1
B
ECM ground
[Engine is running]
●
Idle speed
Body ground
115
116
B/R
B
ECM ground
[Engine is running]
●
Idle speed
Body ground
Voltage: Battery voltage
MBIB0015E
EC-156
POWER SUPPLY AND GROUND CIRCUIT
4.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten two ground screws on the body. Refer to
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace ground connections.
5.
CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I
1.
Disconnect ECM harness connector.
2.
Check harness continuity between ECM terminals 1, 115, 116 and ground.
Refer to Wiring Diagram.
3.
Also check harness for short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors F102, M72
●
Harness for open or short between ECM and ground
>> Repair open circuit or short to power in harness or connectors.
7.
CHECK ECM POWER SUPPLY CIRCUIT-II
1.
Reconnect ECM harness connector disconnected.
2.
Turn ignition switch ON.
3.
Check voltage between IPDM E/R terminal 17 and ground with
CONSULT-II or tester.
OK or NG
OK
>> Go to
.
NG
>> GO TO 8.
PBIB2192E
Continuity should exist.
Voltage: Battery voltage
PBIB1915E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст