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Diagnosis Procedure
1.CHECK HEATED STEERING WHEEL RELAY CONTROL SIGNAL CIRCUIT FOR SHORT
  1. Ignition switch OFF.
  2. Remove heated steering wheel relay and disconnect A/C amp. connector.
  3. Check voltage between A/C amp. harness connector and ground.
    +Voltage
    (Approx.)
    A/C amp.
    ConnectorTerminal
    M5556Ground0 V
Is the inspection result normal?
.
Repair harness or connector.
 
2.CHECK HEATED STEERING WHEEL RELAY
Check heated steering wheel relay. Refer to Component Inspection.
Is the inspection result normal?
Replace A/C amp. Refer to A/C AMP. REMOVAL AND INSTALLATION.
Replace heated steering wheel relay.