Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

CHECK COMBINATION METER ASSY
1. Check voltage.
  1. Remove the combination meter assy with connector still connected.
  2. Turn the ignition switch to ON.
  3. Measure voltage between terminal C8-18 of combination meter assy connector and body ground.
Standard voltage:

Fig 2: Combination Meter Assy Voltage Reference Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: CHECK AND REPLACE COMBINATION METER ASSY

NG: Go to next step.
INSPECT STEERING PAD SWITCH
1. Remove the steering pad switch.
2. Check resistance between terminals +DP and -DP of steering pad switch connector.
Resistance:

Fig 4: Steering Pad Switch Resistance Reference Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE STEERING PAD SWITCH

OK: Go to next step.

REPAIR OR REPLACE HARNESS OR CONNECTOR