Work Flow (Without GR8-1200 NI)

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow (Without GR8-1200 NI)


OVERALL SEQUENCE

Revision: March 20122013 Infiniti JX
If any malfunction is found, immediately disconnect the battery cable from the negative terminal.






DETAILED FLOW

NOTE:
To ensure a complete and thorough diagnosis, the battery must be fully charged.

1. COMPARISON BETWEEN ENGINE COOLANT AND CRANKING VOLTAGE

1.Measure voltage across the battery terminals while cranking the engine.
2.Compare the engine coolant temperature and verify the cranking voltage is within specification.
Minimum Specification of Cranking Voltage Referencing Coolant Temperature





Revision: March 20122013 Infiniti JX

Is the voltage less than the specified value?
YES- GO TO 3.
NO- GO TO 2.

2. ENGINE START CHECK

Check that the engine starts.
Does the engine start?
YES- Inspection End.
NO- Perform further diagnosis of engine mechanical or engine control system. Refer to EM and EC
sections. Once resolved, perform battery test again.

3. STARTER MOTOR ACTIVATION

Check that the starter motor operates.
Does the starter motor turn?
YES- Check ring gear and starter motor drive pinion. Once resolved, perform battery test again.
NO- GO TO 4.

4. "B" TERMINAL CIRCUIT INSPECTION

Check "B" terminal circuit. Refer to "Diagnosis Procedure" B Terminal Circuit.
Is "B" terminal circuit normal?
YES- GO TO 5.
NO- Repair as needed.

5. "S" CONNECTOR CIRCUIT INSPECTION

Check "S" connector circuit. Refer to "Diagnosis Procedure" S Connector Circuit.
Is "S" connector circuit normal?
YES- GO TO 6.
NO- Repair as needed.

6. ENGINE ROTATION STATUS

Check that the engine can be rotated by hand.
Does the engine turn freely by hand?
YES- Replace starter motor. Refer to "Removal and Installation" Removal and Installation.
NO- Perform further diagnosis of engine mechanical or powertrain mechanism. Refer to EM or TM
sections. Once resolved, perform battery test again. Refer to Technical Service Bulletin.
Revision: March 20122013 Infiniti JX