1.CHECK CONTINUITY CD EJECT SIGNAL CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect multifunction switch connector and AV control unit connector.
3. Check continuity between multifunction switch harness connector and AV control unit harness connector.

   Multifunction switch | AV control unit | Continuity
   Connector | Terminal | Connector | Terminal
   M72 | 14 | M202 | 29 | Existed

4. Check continuity between multifunction switch harness connector and ground.

   Multifunction switch | Ground | Continuity
   Connector | Terminal
   M72 | 14 | Not existed

Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair harness or connector.
2.CHECK AV CONTROL UNIT VOLTAGE

1. Connect multifunction switch connector and AV control unit connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector and ground.

   (+) | (−) | Condition | Voltage (Approx.)
   AV control unit
   Connector | Terminal
   M202 | 29 | Ground | Pressing the eject switch | 0 V
   Except for above | 5.0 V

Is the inspection result normal?
YES>>Replace preset switch.
NO>>Replace AV control unit.