Diagnosis Procedure
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK STARTER RELAY
- Turn ignition switch ON.
- Check voltage between BCM harness connector and ground under the following condition.
BCM
Ground
Condition
Voltage (V)
Connector
Terminal
M19
62
Ground
Ignition switch cranking
0
Ignition switch ON (Park or Neutral)
Battery voltage
Other than above
0
Is the measurement value within the specification.
YES
GO TO 3.
NO
GO TO 2.
- CHECK STARTER RELAY CIRCUIT
- Turn ignition switch OFF.
- Disconnect BCM harness connector and IPDM E/R harness connector.
- Check continuity between IPDM E/R harness connector and BCM harness connector.
IPDM E/R
BCM
Continuity
Connector
Terminal
Connector
Terminal
E119
33
M19
62
Yes
- Check continuity between IPDM E/R harness connector and ground.
IPDM E/R
Ground
Continuity
Connector
Terminal
E119
33
Ground
No
Is the inspection result normal?
YES
Replace BCM. Refer to Removal and Installation .
NO
Repair harness or connector.
- CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .
Inspection End.