B172C

B172C ROOF STATUS SIGNAL (TRUNK)





Description
Retractable hard top control unit transmits retractable hard top open and close states to trunk closure sub-control unit, when receiving input signal from roof open/close switch. For the detail, System Description.




DTC Logic

DTC DETECTION LOGIC

NOTE:
If two or more DTCs are detected, Roof Control System, 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 DTC.
Is DTC detected?
YES - Go to B171C.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK ROOF POSITION SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect retractable hard top control unit harness connector and trunk closure sub-control unit harness connector.
3. Check voltage between retractable hard top control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace harness or connectors.
2.REPLACE TRUNK CLOSURE SUB-CONTROL UNIT
Replace trunk closure sub-control unit. Convertible Top.
Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 3.
3.REPLACE RETRACTABLE HARD TOP CONTROL UNIT
Replace retractable hard top control unit. Service and Repair.
Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 4.
4.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END