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:
INSPECTION PROCEDURE 1. INSPECT NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY
(a) Check the illumination.
(1) Apply auxiliary battery voltage to the No. 1 interior illumination light assembly and check that the light illuminates.
OK:
Tester Connection Specified Condition
I
INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION)
Procedure Part Name Code
1 FRONT EXHAUST PIPE ASSEMBLY (TWC: Rear Catalyst)
17410
- -
2 AIR FUEL RATIO SENSOR
89467C -
- -
3 TAIL EXHAUST P