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Diagnosis Procedure
1.CHECK A/C AMP. GROUND CIRCUIT FOR OPEN
  1. Ignition switch OFF.
  2. Disconnect A/C amp. connector.
  3. Check continuity between A/C amp. harness connector and ground.
    A/C amp.—Continuity
    ConnectorTerminal
    M5558GroundExisted
Is the inspection result normal?
.
Repair harness or connector.
 
2.CHECK FUSE
Check that the following fuse is not blown (open).
UnitLocationFuse No.Capacity
A/C amp.Fuse block (J/B)#4010A
Is the fuse blown (open)?
Replace the blown (open) fuse after repairing the affected circuit if a fuse is blown (open).
.
 
3.CHECK A/C AMP. POWER SUPPLY
  1. Connect A/C amp. connector.
  2. Check voltage between A/C amp. harness connector terminals.
    A/C amp.ConditionVoltage
    ConnectorTerminal
    +−
    M556058Ignition switch OFF (auto ACC status) or ON10.5 – 16 V
    Ignition switch OFF (not auto ACC status)0 – 0.1 V
Is the inspection result normal?
Replace A/C amp. Refer to Removal and Installation.
Repair the A/C amp. power supply circuit.