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:
DESCRIPTION The SMRs (System Main Relays) are the relays that connect or disconnect the high-voltage system in accordance with commands from the hybrid vehicle control ECU.
There are 2 SMRs. SMRB and SMRG are located in the HV battery junction block assembly.
To shut off the high voltage power
RemovalREMOVAL CAUTION / NOTICE / HINT
Procedure Part Name Code
1 SWITCH BASE
55449D -
- -
2 REMOVE SEAT HEATER SWITCH
84751F
- - PROCEDURE
1. REMOVE SWITCH BASE 2. REMOVE SEAT HEATER SWITCH (for LH Side)