[Previous][Next]
Diagnosis Procedure
The steering switch has a built-in CPU. Details for refer to Steering Switch.
1.CHECK FUSE
Check for blown fuse.
Power sourceFuse No.
Ignition switch ACC or ON 40
Is the inspection result normal?
Be sure to eliminate cause of malfunction before installing new fuse.
 
2.CHECK STEERING SWITCH POWER SUPPLY CIRCUIT
  1. Turn ignition switch ON.
  2. Check voltage between spiral cable harness connector and ground.
    TerminalsIgnition switch positionVoltage
    (Approx.)
    (+)(−)
    Spiral cableGround
    ConnectorTerminal
    M3016ACC or ON Battery voltage
Is the inspection result normal?
Repair harness or connector.
 
3.CHECK STEERING SWITCH GROUND CIRCUIT
  1. Turn ignition switch OFF.
  2. Disconnect spiral cable connector.
  3. Check continuity between spiral cable harness connector and ground.
    Spiral cableGroundContinuity
    ConnectorTerminal
    M3015Existed
Is the inspection result normal?
GO TO 4.Diagnosis Procedure
Repair harness or connector.
 
4.CHECK STEERING SWITCH SIGNAL A CIRCUIT
  1. Disconnect combination meter harness connector.
  2. Check continuity between combination meter harness connector and spiral cable harness connector.
    Combination meterSpiral cableContinuity
    ConnectorTerminalConnectorTerminal
    M7733M3013Existed
  3. Check continuity between combination meter harness connector and ground.
    Combination meterGroundContinuity
    ConnectorTerminal
    M7733Not existed
Is the inspection result normal?
GO TO 5.Diagnosis Procedure
Repair harness or connector.
 
5.CHECK STEERING SWITCH SIGNAL GROUND CIRCUIT
  1. Check continuity between combination meter harness connector and spiral cable harness connector.
    Combination meterSpiral cableContinuity
    ConnectorTerminalConnectorTerminal
    M7734M3011Existed
  2. Check continuity between combination meter harness connector and ground.
    Combination meterGroundContinuity
    ConnectorTerminal
    M7734Not existed
Is the inspection result normal?
GO TO 6.Diagnosis Procedure
Repair harness or connector.
 
6.CHECK SPIRAL CABLE
  1. Disconnect steering switch connector.
  2. Check continuity between spiral cable harness connectors.
    Spiral cableContinuity
    Terminal
    1622Existed
    1529
    1327
    1125
Is the inspection result normal?
Replace steering wheel. Refer to Removal and Installation.
Replace spiral cable. Refer to Removal and Installation.