B2503

SLIDING ROOF / CONVERTIBLE: RETRACTABLE HARDTOP SYSTEM: B2503: Short in Roof Drive Motor LH Circuit
B2503 - Short in Roof Drive Motor LH Circuit

DESCRIPTION

The sliding roof control ECU assembly operates the roof panels, luggage door, back window panel and package trays in the specified order while the sliding roof switch assembly is operated. The sliding roof drive gear assembly RH/LH (roof motor RH/LH) operates the roof panels.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* Since this malfunction may be detected due to the protection circuit operation in the motor, check that the motor has cooled down sufficiently before performing DTC check again.
* These DTCs are stored when the protection circuit in the motor operates due to a mechanical malfunction during metal top system operation.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. INSPECT SLIDING ROOF DRIVE GEAR ASSEMBLY LH (ROOF MOTOR LH)

(a) Remove the sliding roof drive gear assembly LH (roof motor LH).





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





NG -- REPLACE SLIDING ROOF DRIVE GEAR ASSEMBLY LH (ROOF MOTOR LH)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (SLIDING ROOF DRIVE GEAR LH - SLIDING ROOF CONTROL ECU)

(a) Disconnect the Q40 and Q33 connectors.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE SLIDING ROOF CONTROL ECU ASSEMBLY