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 FRONT POWER SEAT SWITCH
84922 -
- -
2 SEAT ADJUSTER SHIELD CLAMP BRACKET
72714 -
- -
3 RECLINING POWER SEAT SWITCH KNOB
DESCRIPTION These DTCs are stored when the CAN communication system is malfunctioning.
DTC No. Detection Item
DTC Detection Condition Trouble Area
Memory U010087
Lost Communication with ECM/PCM "A" Missing Message
Diagnosis Condition:
IG voltage 8.5 V or