DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
PERFORM ACTIVE TEST BY INTELLIGENT TESTER (SLIDING ROOF OPERATION)
INSPECT FUSE (S/ROOF, DC/DC, ECU-B No.1)
CHECK SLIDING ROOF ECU (POWER SOURCE)
CHECK SLIDING ROOF ECU (GROUND)
SLIDING ROOF SYSTEM - Sliding Roof ECU Power Source Circuit
DESCRIPTION
The sliding roof ECU receives signals from the sliding roof switch and activates the sliding roof. However, fuse, wire harness or sliding roof ECU malfunctions may cause the sliding roof system to stop operating.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER (SLIDING ROOF OPERATION) |
Select the Active Test, use the intelligent tester to generate a control command, and then check that the sliding roof slides open/close and tilts up/down.
- SLIDE ROOF:
| Item | Test Details | Diagnostic Note |
SLIDE ROOF
(Slide Roof) | Operate sliding roof CLOSE/UP | - |
SLIDE ROOF
(Slide Roof) | Operate sliding roof OPEN/DOWN | - |
- OK:
- Sliding roof operates normally.
| 2.INSPECT FUSE (S/ROOF, DC/DC, ECU-B No.1) |
Remove the S/ROOF fuse from the cowl side J/B LH.
Remove the ECU-IG LH fuse from the cowl side J/B LH.
Measure the resistance of the fuses.
- Standard resistance:
- Below 1 Ω
| 3.CHECK SLIDING ROOF ECU (POWER SOURCE) |
Disconnect the R6 sliding roof ECU connector.
Check the voltage between the wire harness side connector and the body ground.
- Standard voltage:
| Tester Connection | Specified Condition |
| R6-5 (B) - Body ground | 10 to 14 V |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 4.CHECK SLIDING ROOF ECU (GROUND) |
Disconnect the R6 sliding roof ECU connector.
Check the resistance between the wire harness side connector and the body ground.
- Standard resistance:
| Tester Connection | Specified Condition |
| R6-7 (E) - Body ground | Below 1 Ω |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK | |
| |
| REPLACE MAP LIGHT ASSEMBLY |
|
LEXUS IS250, IS220d / GSE20 ALE20
