Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT AUDIO AND REAR A/C CONTROL SWITCH (+B, ACC, GND)
1. Disconnect the audio and rear A/C control switch connector A35.
2. Measure the resistance according to the value (s) in the figure Fig 1 below.
  Standard:
  
  Fig 1: Resistance Value Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Identifying Connector A35
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the voltage according to the value (s) in the figure Fig 3 below.
  Standard:
  
  Fig 3: Voltage Value Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE OR DIAGNOSTIC TROUBLE CODE CHART (SEE PROBLEM SYMPTOMS TABLE or DIAGNOSTIC TROUBLE CODE CHART )