B170B

DTC Logic


DTC DETECTION LOGIC

NOTE:
If two or more DTCs are detected, refer to "DTC Inspection Priority Chart" 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 "Diagnosis Procedure" .
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. Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 4.
NO- Replace roof open/close switch. Refer to "Component Parts Location" Component Parts.

4. REPLACE RETRACTABLE HARD TOP CONTROL UNIT

Replace retractable hard top control unit. Refer to "Removal and Installation" Service and Repair.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 5.

5. CHECK INTERMITTENT INCIDENT

Refer to "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. Refer to "Component Parts Location" Component Parts.