Work Flow (Without GR8-1200 NI)

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow (Without GR8-1200 NI)


OVERALL SEQUENCE

If any malfunction is found, immediately disconnect the battery cable from the negative terminal.






DETAILED FLOW

NOTE:
If any malfunction is found, immediately disconnect the battery cable from the negative terminal.

1. CHECK ENGINE START

Crank the engine and check that the engine starts.
Does the engine start?
YES- GO TO 2.
NO- GO TO 3.

2. CHECK THAT THE STARTER MOTOR STOPS

Check that the starter motor stops after starting the engine.
Does the starter motor stop?
YES- Inspection End.
NO- Replace starter motor. Refer to "QR25DE : Removal and Installation" Removal And Installation (QR25DE) or STR23, "VQ35DE : Removal and Installation" (VQ35DE).

3. CHECK THAT THE ENGINE TURNS WHEN CRANKING

Check that the engine turns when cranking.
Does engine turn when cranking?
YES- GO TO 4.
NO- GO TO 5.

4. CHECK THE ENGINE SPEED WHEN CRANKING

Check that the engine speed is not low when cranking.
Does engine turn normally?
YES- Check ignition/fuel system.
NO- Check charge condition, corrosion and connection condition of the battery.

5. CHECK STARTER MOTOR ACTIVATION

Check that the starter motor runs at cranking.
Does starter motor turn?
YES- Replace starter motor. Refer to "QR25DE : Removal and Installation" Removal And Installation (QR25DE) or STR23, "VQ35DE : Removal and Installation" (VQ35DE).
NO- GO TO 6.

6. CHECK POWER SUPPLY CIRCUIT

Check the following conditions:
- Fuse and fusible link
- Charge condition, corrosion and connection of the battery.
Are these inspection results normal?
YES- GO TO 7.
NO- Repair as needed.

7. CHECK STARTING SYSTEM WIRING

Check the following:
- "B" terminal circuit. Refer to "Diagnosis Procedure" B Terminal Circuit.
- "S" terminal circuit. Refer to "Diagnosis Procedure" S Connector Circuit.
Are the inspection results normal?
YES- Replace starter motor. Refer to "QR25DE : Removal and Installation" Removal And Installation (QR25DE) or STR23, "VQ35DE : Removal and Installation" (VQ35DE).
NO- Repair as needed.