Rear Door Courtesy Switch Circuit [08/2013 - ]: Procedure
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- READ VALUE USING TECHSTREAM
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Main Body / Data List.
- Read the display on the Techstream.MAIN BODY
Tester Display Measurement Item/Range Normal Condition Diagnostic Note RR Door Courtesy SW Rear door courtesy light switch RH signal/ON or OFF ON: Rear door RH open
OFF: Rear door RH closed- RL Door Courtesy SW Rear door courtesy light switch LH signal/ON or OFF ON: Rear door LH open
OFF: Rear door LH closed- OK
Normal conditions listed above are displayed.
Result
Result Proceed to OK A Rear door courtesy light switch LH or RH does not operate B
B → See step 2
A → See step 5
- INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH OR RH)
- Remove the rear door courtesy light switch assembly. Refer to REMOVAL [08/2013 - ] .
- Inspect the rear door courtesy light switch assembly. Refer to INSPECTION [08/2013 - ]
.
OK
Rear door courtesy light switch assembly is normal.
Result
Result Proceed to OK (for Rear LH) A OK (for Rear RH) B NG C
B → See step 4
C → See step 7
A: Go to next step
- CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (FOR LH) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
- Disconnect the H11 main body ECU (multiplex network body ECU) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition P8-1 - H11-3 (LCTY) Always Below 1 Ω P8-1 - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 6
- CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (FOR RH) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
- Disconnect the H10 main body ECU (multiplex network body ECU) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Q13-1 - H10-6 (RCTY) Always Below 1 Ω Q13-1 - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 6
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [08/2013 - ]
- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to REMOVAL [08/2013 - ]
- REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY. Refer to REMOVAL [08/2013 - ]