How To Proceed With Troubleshooting

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

HINT

Use the following procedure to troubleshoot the defogger system
* Use the 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 REFERENCE

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 ).
2. Data List/Active Test (See DATA LIST / ACTIVE TEST ).
3. On-vehicle inspection (See ON-VEHICLE INSPECTION ).
REPAIR OR REPLACE
CONFIRMATION TEST
NEXT: END