B175E

B175E POWER SOURCE (POWER WINDOW)





Description
Retractable hard top control unit watches power supply condition of power supply (power window) terminal.




DTC Logic

DTC DETECTION LOGIC

NOTE:
If two or more DTCs are detected, refer to Retractable Hard Top Control Unit, and determine trouble diagnosis order.






DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine.
2. Operate retractable hard top to fully open and fully close.
3. Check "Self Diagnostic Result" with CONSULT-III.
Is DTC detected?
YES - Go to B1758.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK BCM POWER SUPPLY AND GROUND CIRCUIT
Check BCM power supply and ground circuit. Refer to Power Supply and Ground Circuit.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace malfunctioning part.
2.CHECK POWER SUPPLY CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect retractable hard top control unit connector.
3. Turn ignition switch ON.
4. Check voltage between retractable hard top control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 4.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between retractable hard top control unit harness connector and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - Repair or replace harness.
4.CHECK POWER SUPPLY CIRCUIT 2
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM harness connector and retractable hard top control unit harness connector.





4. Check continuity between BCM harness connector and ground.





Is the inspection result normal?
YES - Replace BCM. Refer to Removal and Installation.
NO - Repair or replace harness.