1.CHECK ECM POWER SUPPLY
Turn ignition switch OFF.
Disconnect ECM harness connector.
Check the voltage between ECM harness connector terminals under the following conditions.
ECM
Voltage
Connector
+
−
Terminal
Terminal
F102
118
128
Battery voltage
Is the inspection result normal?
YES
>>
GO TO 3
.
NO
>>
GO TO 2
.
2.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E106, M6
15A fuse (No. 50)
IPDM E/R harness connector E7
Harness for open or short between ECM and battery
>>
Repair or replace harness or connectors.
3.CHECK INTERMITTENT INCIDENT
Refer to
Intermittent Incident
.
Is the inspection result normal?
YES
>>
GO TO 4
.
NO
>>
Repair or replace harness or connectors.
4.PERFORM DTC CONFIRMATION PROCEDURE
Turn ignition switch ON.
Erase DTC.
Perform DTC Confirmation Procedure.See
DTC Logic (GT-R certified NISSAN dealer)
.
Is the 1st trip DTC P0603 displayed again?
YES
>>
GO TO 5
.
NO
>>
INSPECTION END
5.REPLACE ECM
Replace ECM.
Go to
Special Repair Requirement (GT-R certified NISSAN dealer)
.
>>
INSPECTION END