How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

HINT.

Use these procedures to troubleshoot the heated steering wheel system.
*. Use the Intelligent tester or Techstream.

VEHICLE BROUGHT TO WORKSHOP
INSPECT BATTERY VOLTAGE
Standard voltage: 11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding

PROBLEM SYMPTOMS TABLE

Result

RESULT CHART

Result	Proceed to
Fault is not listed in problem symptoms table	A
Fault is listed in problem symptoms table	B

B: Go to step 5

A: Go to Next Step

OVERALL ANALYSIS AND TROUBLESHOOTING*
1. Terminals of ECU (see TERMINALS OF ECU )
REPAIR OR REPLACE
CONFIRMATION TEST
NEXT: END