Toyota Corolla Cross: System Diagram
SYSTEM DIAGRAM
SYSTEM DIAGRAM

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SYSTEM DESCRIPTION
HEATED STEERING WHEEL SYSTEM
(a) The steering heater warms up the steering wheel when the steering heater
switch is turned on.
(b) The steering heater uses a control thermostat
CAUTION / NOTICE / HINT
HINT:
Use these procedures to troubleshoot the heated steering wheel system.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple
suspected areas are listed, the potential causes of the symptoms are listed in order
SEE MORE:
INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION)
Procedure Part Name Code
1 WINDSHIELD WIPER SWITCH ASSEMBLY
84650 -
- -
2 UPPER STEERING COLUMN COVER
45286B -
- -
3 LOWER STEERING COLUMN COVER
45287
PROCEDURE
1.
CHECK CAN COMMUNICATION SYSTEM
(a) Enter the following menus: Bus Check.
for HEV Model:
Click here
for Gasoline Model:
Click here
(b) Check that all ECUs and sensors that use CAN communication
are connected.
Result