Starting System: Testing and Inspection

STARTING SYSTEM


Trouble Diagnosis with Starting/Charging System Tester (Starting)

For starting system testing, use Starting/Charging System Tester (J-44373). For details and operating instructions, refer to Technical Service Bulletin.






DIAGNOSTIC PROCEDURE 1

Check "B" Terminal Circuit

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 "B" TERMINAL CIRCUIT





1. Turn ignition switch OFF.
2. Make sure that starter motor "B" terminal connection is clean and tight.
3. Check voltage between starter motor "B" terminal and ground.





OK or NG
OK - GO TO 2.
NG - Check harness between battery and starter motor for open circuit.
2.CHECK BATTERY CABLE CONNECTION STATUS (VOLTAGE DROP TEST)





Check voltage between starter motor "B" terminal and battery positive terminal.





OK or NG
OK - GO TO 3.
NG - Check harness between the battery and the starter motor for poor continuity.
3.CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)





1. Turn ignition switch OFF.
2. Check voltage between starter motor case and battery negative terminal.





OK or NG
OK - "B" terminal circuit is OK. Further inspection necessary. Refer to "Trouble Diagnosis with Starting/Charging System Tester (Starting)".
NG - Check the starter motor case and ground for poor continuity.

DIAGNOSTIC PROCEDURE 2

Check "S" Connector Circuit

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 "S" CONNECTOR CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect starter motor connector.
3. Check voltage between starter motor harness connector and ground.





OK or NG
OK - "S" connector circuit is OK. Further inspection necessary. Refer to "Trouble Diagnosis with Starting/Charging System Tester (Starting)".
NG - Check the following.
- Ignition switch and PDU
- IPDM E/R
- Harness between starter motor and IPDM E/R

MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEMPERATURE