Diagnosis Procedure

S CONNECTOR CIRCUIT

VQ40DE : Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram - VQ-40DE With Clutch Interlock Cancel System" or Without Clutch Interlock Cancel System.

CAUTION:
Before testing, perform the following procedure to ensure the engine cannot start.
1.Remove fuel pump fuse.
2.Crank or start the engine (where possible) until the fuel pressure is released.

1. CHECK STARTER MOTOR MAGNETIC SWITCH CIRCUIT






1.Turn ignition switch OFF.
2.Disconnect starter motor connector E207.
3.Shift transmission into park or neutral.
4.Depress clutch pedal if the vehicle is equipped with M/T.
5.Check voltage between starter motor harness connector E207
terminal 1 and ground with the ignition in START.





Is battery voltage present?
YES- Magnetic switch circuit is OK. Further inspection necessary. Initial Inspection and Diagnostic Overview.
NO- GO TO 2

2. CHECK CONNECTOR

1.Turn ignition switch OFF.
2.Check the IPDM E/R harness connector E120 and starter motor harness connector E207 for damage, bent pins and loose connections.
Is the inspection result normal?
YES- GO TO 3
NO- Repair the terminal and connector.

3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)






1.Disconnect IPDM E/R connector E120.
2.Check continuity between starter motor harness connector E207
(A) terminal 1 and IPDM E/R harness connector E120 (B) terminal 19.





3.Check continuity between starter motor harness connector E207
(A) terminal 1 and ground.





Are the continuity test results as specified?
YES- Further inspection necessary. Initial Inspection and Diagnostic Overview.
NO- Repair the harness.