B170B

DTC Logic


DTC DETECTION LOGIC

NOTE:
If two or more DTCs are detected, Related Tests, Information and Procedures, and determine trouble diagnosis order.






DTC CONFIRMATION PROCEDURE


1. CHECK ROOF OPEN/CLOSE SWITCH SIGNAL

1.Start engine.
2.Operate retractable hard top to fully open and fully close.
3.Check DTC.
Is DTC detected?
YES- Go to .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK ROOF OPEN/CLOSE SWITCH POWER SUPPLY CIRCUIT-I

1.Turn ignition switch OFF.
2.Disconnect roof open/close switch harness connector.
3.Turn ignition switch ON.
4.Check the voltage between roof open/close switch harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 2.

2. CHECK ROOF OPEN/CLOSE SWITCH POWER SUPPLY CIRCUIT-II

1.Turn ignition switch OFF.
2.Disconnect retractable hard top control unit harness connector.
3.Check the continuity between retractable hard top control unit harness connector and roof open/close switch harness connector.





4.Check harness for short to ground.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace harness.

3. CHECK ROOF OPEN/CLOSE SWITCH

Check roof open/close switch. .
Is the inspection result normal?
YES- GO TO 4.
NO- Replace roof open/close switch. Locations.

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


Component Inspection


1. CHECK ROOF OPEN/CLOSE SWITCH

1.Turn ignition switch OFF.
2.Disconnect roof open/close switch harness connector.
3.Check the continuity between roof open/close switch terminals under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace roof open/close switch. Locations.