Toyota Avalon Service & Repair Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use these procedures to troubleshoot the heated steering wheel system.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage with the power switch off.

Standard voltage:

11 to 14 V (Power switch off)

If the voltage is below 11 V, replace or recharge the auxiliary battery before proceeding to the next step.

3.	PROBLEM SYMPTOMS TABLE

HINT:

Refer to Problem Symptoms Table.

Click here

4.	REPAIR OR REPLACE

5.	CONFIRMATION TEST

END

Toyota Avalon Service & Repair Manual > How To Troubleshoot Ecu Controlled Systems: General Information
GENERAL INFORMATION A large number of ECU controlled systems are used in this vehicle. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot. However, most problem checking procedures only involve inspecting the ECU cont ...

Toyota Avalon Owners Manual