Infiniti I35 (A33). Manual — part 203
Wiring Diagram
NHEC0047
MEC529D
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
POWER SUPPLY AND GROUND CIRCUIT
Wiring Diagram
EC-153
MEC717C
SEC009E
POWER SUPPLY AND GROUND CIRCUIT
Wiring Diagram (Cont’d)
EC-154
Diagnostic Procedure
NHEC0049
1
INSPECTION START
Start engine.
Is engine running?
Yes or No
Yes
©
GO TO 9.
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 43 and ground with CONSULT-II or tester.
SEF291X
OK or NG
OK
©
GO TO 4.
NG
©
GO TO 3.
3
DETECT MALFUNCTIONING PART
Check the following.
I
10A fuse
I
Harness connectors M229, F66
I
Fuse block (J/B) connectors M19, E89
I
Harness for open or short between ECM and ignition switch
©
Repair harness or connectors.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
POWER SUPPLY AND GROUND CIRCUIT
Diagnostic Procedure
EC-155
4
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two engine ground screws.
Refer to “Ground Inspection”, EC-160.
SEC047D
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 48, 57, 106, 108 and ground.
Refer to WIRING DIAGRAM.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK
©
GO TO 6.
NG
©
Repair open circuit or short to power in harness or connectors.
POWER SUPPLY AND GROUND CIRCUIT
Diagnostic Procedure (Cont’d)
EC-156
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