B2560

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION


B2560 START POW SUP CIRC


DIAGNOSIS DESCRIPTION
B2560 starter power supply system monitors the power supply condition to the starter motor relay and the starter motor relay condition in IPDM E/R. If it detects the starter motor relay ON condition in IPDM E/R without the "Engine start" request from the Intelligent Key unit, it judges that it is the malfunction and displays the DTC
(Diagnostic Trouble Diagnosis).

TERMINALS AND REFERENCE VALUE

Intelligent Key Unit






PDU (Power Distribution Unit)






SELF-DIAGNOSTIC LOGIC

SELF-DIAGNOSTIC LOGIC:

DIAGNOSTIC PROCEDURE
1.CHECK HARNESS CONTINUITY 1
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit and power distribution unit connector.
3. Check continuity between Intelligent Key unit connector and power distribution unit connector.










4. Check continuity between Intelligent Key unit connector and ground.






OK or NG
OK - GO TO 2.
NG - Repair or replace harness.
2.CHECK HARNESS CONTINUITY 2
1. Disconnect IPDM E/R connector.
2. Check continuity between power distribution unit connector and IPDM E/R connector.










3. Check continuity between power distribution unit connector and ground.





OK or NG
OK - Replace IPDM E/R.
NG - Repair or replace harness.