Sliding Roof ECU Power Source Circuit

SLIDING ROOF: SLIDING ROOF SYSTEM: Sliding Roof ECU Power Source Circuit

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

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (SLIDING ROOF OPERATION)
(a) Select the Active Test, use the Techstream to generate a control command, and then check that the sliding roof slides open/close and tilts up/down.
Slide Roof:






OK
Sliding roof operates normally.
NG -- INSPECT FUSE (S/ROOF, DC/DC, ECU-B No.1)
OK -- REPLACE SLIDING ROOF ECU
2. INSPECT FUSE (S/ROOF, DC/DC, ECU-B No.1)
(a) Remove the S/ROOF fuse from the cowl side J/B LH.
(b) Remove the ECU-IG LH fuse from the cowl side J/B LH.
(c) Measure the resistance of the fuses.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
3. CHECK SLIDING ROOF ECU (POWER SOURCE)





(a) Disconnect the R6 sliding roof ECU connector.
(b) Check the voltage between the wire harness side connector and the body ground.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK SLIDING ROOF ECU (GROUND)





(a) Disconnect the R6 sliding roof ECU connector.
(b) Check the resistance between the wire harness side connector and the body ground.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAP LIGHT ASSEMBLY