B172C

B172C ROOF STATUS SIGNAL (TRUNK)





Description
- Soft top control unit transmits roof position signal to BOSE amp. and tel adapter unit (Without NAVI).
- BOSE amp. uses this signal for sound equalizer automatic switching function. System Description (BOSE audio without navigation) or System Description (BOSE audio with navigation).
- Tel adapter unit (Without NAVI) uses this signal for voice recognition function. System Description.




DTC Logic

DTC DETECTION LOGIC

NOTE:
If two or more DTCs are detected, RF, and determine trouble diagnosis order.






DTC CONFIRMATION PROCEDURE
1. PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine.
2. Operate soft top to fully open and fully close.
3. Select "Self Diagnostic Result" mode of "CONVERTIBLE ROOF" using CONSULT-III.
4. Check DTC.
Is DTC detected?
YES - Go to B171C.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK ROOF POSITION SIGNAL CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect soft top control unit harness connector.
3. Turn ignition switch ON.
4. Check voltage between soft top control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 2.
2.CHECK ROOF POSITION SIGNAL CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect BOSE amp. and tel adapter unit (Without NAVI) harness connector.
3. Check continuity between soft top control unit harness connector and battery.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair short to power in harness or connectors.
3.CHECK BOSE AMP.
Check BOSE amp. Without Navigation (BOSE audio without navigation) or With Navigation(BOSE audio with navigation).
Is the inspection result normal?
YES-I - BOSE audio without navigation: GO TO 4.
YES-II - BOSE audio with navigation: GO TO 6.
NO - Replace BOSE amp. Without Navigation (BOSE audio without navigation) or With Navigation (BOSE audio with navigation).
4.CHECK TEL ADAPTER UNIT
Check tel adapter unit. Without Navigation.
Is the inspection result normal?
YES - GO TO 6.
NO - Replace tel adapter unit. Removal and Installation.
5.REPLACE SOFT TOP CONTROL UNIT
Replace soft top control unit. Removal And Installation.
Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 6.
6.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END