Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

If there is not the LEXUS hand-held tester, replace the sliding roof drive gear assembly.

Perform active test.
PREPARATION:

Connect the LEXUS hand-held tester to the DLC3.

CHECK:
1. Enter into ACTIVE TEST function of LEXUS hand-held tester.
2. Check that "Slide roof motor" operates as the LEXUS hand-held tester directs.
  NOTE: Caution is necessary not to be caught in the roof glass because the jam protection system does not operate during conducting ACTIVE TEST.
  
  HINT:
  
  With one ACTIVE direction, the sliding roof can be slid and tilted continuously.
  
  OK:
  
  The slide roof operates normally.
1. OK : Proceed to next circuit inspection shown in problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
2. NG : Go to next step.
Check P-J/B, S/ROOF fuse and P-IG relay.
CHECK:
1. Check continuity of P-J/B and S/ROOF fuse.
2. Check P-IG relay
  OK:
  
  Continuity
1. NG : Replace the failure fuse or relay.
2. OK : Go to next step.
Check voltage between terminals P-IG1, S/ROOF and GND of sliding roof gear assembly with ECU connector.
PREPARATION:

Turn the ignition switch ON.

CHECK:

Measure voltage between terminals P-IG1, and GND.

OK:

Voltage:10 - 14 V

PREPARATION:
1. Turn the ignition switch OFF.
2. Disconnect the sliding roof gear assembly with ECU connector.
  CHECK:
  
  Measure voltage between terminal B and GND.
  
  OK:
  
  Voltage: 10 - 14 V
1. NG : Replace sliding roof gear assembly with ECU (See REMOVAL ).
2. OK : Go to next step.
Check harness and connector between sliding roof gear assembly with ECU and body ground.
1. NG : Repair or replace wire harness or connector.
2. OK : Proceed to next circuit inspection show on problem symptom table (See PROBLEM SYMPTOMS TABLE ).