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 Refer to DTC P003012. Click here
HINT: Although the DTC titles say O2 sensor, these DTCs relate to the air fuel ratio sensor (sensor 1).
DTC No. Detection Item
DTC Detection Condition Trouble Area
MIL Note
P223711 A/F (O2) Sensor Positive Current Contr
INSPECTION PROCEDURE 1. INSPECT FUEL PRESSURE SENSOR
(a) Check the fuel pressure sensor output voltage.
(1) Apply 5 V between terminals 1 (VC) and 2 (E2).
NOTICE:
Be careful when connecting the leads as the fuel pressure sensor may be damaged if the leads are connected to the wrong