Inspection Procedure
WARNING: This page is about a different car, the 2005 Lexus RX 330. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The vehicle is equipped with SRS (Supplemental Restraint System) such as airbags. Before servicing (Including removal or installation of parts), be sure to read the precautionary notice for the supplemental restraint system (see PRECAUTION
).
- INSPECT RADIO RECEIVER ASSY
- Disconnect the radio receiver assy connector R4.
- Measure the resistance according to the value(s) in the table below.
Standard:
RADIO RECEIVER ASSY CONNECTOR TERMINALS RESISTANCETester connection Condition Specified condition SW2 - SWG No switch is pushed Approx. 100 kΩ SW2 - SWG VOICE switch: push Approx. 3.2 kΩ SW2 - SWG ON HOOK switch: push Approx. 0.3 kΩ SW2 - SWG OFF HOOK switch: push Approx. 1.0 kΩ
- NG: Go to step 2.
- OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
- INSPECT STEERING PAD SWITCH ASSY
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Disconnect the steering pad switch assy connector C13.
- Measure the resistance according to the value(s) in the table below.
Standard:
STEERING PAD SWITCH ASSY CONNECTOR TERMINALS RESISTANCETester connection Condition Specified condition AU2 - EAU No switch is pushed Approx. 100 kΩ AU2 - EAU VOICE switch: push Approx. 3.2 kΩ AU2 - EAU ON HOOK switch: push Approx. 0.3 kΩ AU2 - EAU OFF HOOK switch: push Approx. 1.0 kΩ
- NG: REPLACE STEERING PAD SWITCH ASSY (SEE STEERING PAD SWITCH ASSY )
- OK: Go to next step.
- INSPECT SPIRAL CABLE SUB-ASSY
- Disconnect the steering pad switch assy and spiral cable sub-assy connectors.
- Measure the resistance according to the value(s) in the table below.
Standard:
STEERING PAD SWITCH ASSY CONNECTOR TERMINALS RESISTANCETester connection Specified condition EAU - EAU Below 1 Ω AU2 - AU2 Below 1 Ω
- NG: REPLACE SPIRAL CABLE SUB-ASSY (SEE SPIRAL CABLE SUB-ASSY )
- OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE SUB-ASSY - RADIO RECEIVER ASSY)