B172D

B172D ROOF WARNING BUZZER





DTC Logic

DTC DETECTION LOGIC

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




Diagnosis Procedure
1.CHECK ROOF WARNING BUZZER CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect retractable hard top control unit harness connector and fuse block (J/B) harness connector.
3. Check voltage between retractable hard top control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 2.
2.CHECK ROOF WARNING BUZZER CIRCUIT-II
1. Disconnect roof warning buzzer harness connector.
2. Check voltage between fuse block (J/B) harness connector and ground.





3. Check voltage between retractable hard top control unit harness connector and ground.





Is the inspection result normal?
YES - Replace warning buzzer. Removal And Installation.
NO - Repair or replace harness or connector.
3.CHECK FUSE BLOCK (J/B)
Check fuse block (J/B). Fuse Block - Junction Box (J/B).
Is the inspection result normal?
YES - GO TO 4.
NO - Replace fuse block (J/B).
4.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 5.
5.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END