How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2008 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Use the procedure to troubleshoot the defogger system.
The intelligent tester should be used in steps 4 and 6.

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 6

A: Go to next step.

OVERALL ANALYSIS AND TROUBLESHOOTING
1. See TERMINALS OF ECU
2. See DATA LIST/ACTIVE TEST
3. See ON-VEHICLE INSPECTION
4. See ON-VEHICLE INSPECTION
REPAIR OR REPLACE
CONFIRMATION TEST
NEXT: END