Inspection Procedure
WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK WIRE HARNESS (RADIO RECEIVER - AUDIO DOOR CONTROL SWITCH)
- Disconnect the R1 receiver connector.
- Disconnect the A25 switch connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Specified Condition R1-2 (DOS1) - A25-8 Below 1 Ω R1-2 (DOS1) - Body ground 10 kΩ or higher
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: Go to next step
- CHECK WIRE HARNESS (AUDIO DOOR CONTROL SWITCH - BATTERY AND BODY GROUND)
- Disconnect A25 connector.
- Measure the resistance and voltage of the wire harness side connector.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Specified Condition A25-6 (GND) - Body ground Below 1 Ω Standard voltage
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition A25-10 (+B) - Body ground Always 10 to 14 V A25-4 (ACC) - Body ground Ignition switch ACC 10 to 14 V
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: Go to next step
- REPLACE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY LOWER CENTER (AUDIO DOOR CONTROL SWITCH)
- After replacing the instrument cluster finish panel lower center (audio door control switch), check that the audio door can be opened and closed by using the audio door control switch.
OK:
Audio door can be opened and closed with switch.
NG: REPLACE RADIO RECEIVER ASSEMBLY
OK: END
- After replacing the instrument cluster finish panel lower center (audio door control switch), check that the audio door can be opened and closed by using the audio door control switch.