S Connector Circuit

S CONNECTOR CIRCUIT


VQ40DE VQ40DE : Description

Terminal "1" (S) is the power supply for the starter motor magnetic switch. Terminal 1 is supplied with power when the ignition switch is turned to the START position while the selector lever is in the P or N position.




S CONNECTOR CIRCUIT


VQ40DE : Diagnosis Procedure


CAUTION:
Perform diagnosis under the condition that engine cannot start by the following procedure.
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. 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. Refer to 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 and starter motor connector E207.
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. Refer to Initial Inspection and Diagnostic Overview.
NO - Repair the harness.