1.CHECK FUSE Check 10A fuses [Nos. 3, 6 and 19, located in the fuse block (J/B)]. NOTE： Refer to Fuse, Connector and Terminal Arrangement. Is the inspection result normal? YES>>GO TO 2.
NO>>Replace the fuse after repairing the applicable circuit.
2.CHECK A/C AUTO AMP. POWER SUPPLY CIRCUIT

1. Turn the ignition switch OFF.
2. Disconnect the A/C auto amp. connector.
3. Check voltage between A/C auto amp. harness connector and ground.

   (+) | (−) | Voltage (Approx.)
   A/C auto amp. | — | Ignition switch position
   Connector | Terminal | OFF | ACC | ON
   M66 | 40 | Ground | Battery voltage | Battery voltage | Battery voltage
   17 | 0 V | Battery voltage | Battery voltage
   20 | 0 V | 0 V | Battery voltage

Is the inspection result normal?
YES>>Repair the harnesses or connectors.
NO>>GO TO 3.
3.CHECK A/C AUTO AMP. GROUND CIRCUIT

1. Turn the ignition switch OFF.
2. Check continuity between A/C auto amp. harness connector and ground.

   A/C auto amp. | — | Continuity
   Connector | Terminal
   M66 | 19 | Ground | Existed
   39

Is the inspection result normal?
YES>>INSPECTION END
NO>>Repair the harnesses or connectors.