Diagnosis Procedure

Diagnosis Procedure

1. CHECK MODE DOOR MOTOR POWER SUPPLY

   1. 1. Ignition switch ON.

      2. Check voltage between mode door motor harness connector and ground.

         +		–	Voltage (Approx.)
         Mode door motor
         Connector	Terminal
         M166	1	Ground	Battery voltage

   Is the inspection result normal?

   YES >>

   GO TO 2.

   NO >>

   GO TO 5.

2. CHECK MODE DOOR MOTOR GROUND CIRCUIT

   1. 1. Ignition switch OFF.

      2. Disconnect mode door motor connector and A/C amp. connector.

      3. Check continuity between mode door motor harness connector and ground.

         Mode door motor		—		Continuity
         Connector	Terminal
         M166	2	Ground		Yes

   Is the inspection result normal?

   YES >>

   GO TO 3.

   NO >>

   Repair harness or connector.

3. CHECK MODE DOOR MOTOR LIN SIGNAL

   1. 1. Connect mode door motor connector and A/C amp. connector.

      2. Ignition switch ON.

      3. Confirm output waveform between mode door motor harness connector and ground using oscilloscope.

         +		—	Output waveform
         Mode door motor
         Connector	Terminal
         M166	3	Ground

   Is the inspection result normal?

   YES >>

   GO TO 4.

   NO >>

   GO TO 6.

4. CHECK INSTALLATION OF MODE DOOR MOTOR

   1. Check mode door motor is properly installed. Refer to Exploded View.

   Is the inspection result normal?

   YES >>

   Replace mode door motor. Refer to Removal and Installation.

   NO >>

   Repair or replace malfunctioning part.

5. CHECK MODE DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN

   1. 1. Ignition switch OFF.

      2. Disconnect mode door motor connector and A/C amp. connector.

      3. Check continuity between mode door motor harness connector and A/C amp. connector.

         Mode door motor		A/C amp.		Continuity
         Connector	Terminal	Connector	Terminal
         M166	1	M81	1	Yes

   Is the inspection result normal?

   YES >>

   Replace A/C amp. Refer to Removal and Installation.

   NO >>

   Repair harness or connector.

6. CHECK MODE DOOR MOTOR LIN SIGNAL CIRCUIT FOR OPEN

   1. 1. Ignition switch OFF.

      2. Disconnect mode door motor connector and A/C amp. connector.

      3. Check continuity between mode door motor harness connector and A/C amp. harness connector.

         Mode door motor		A/C amp.		Continuity
         Connector	Terminal	Connector	Terminal
         M166	3	M81	22	Yes

   Is the inspection result normal?

   YES >>

   Replace A/C amp. Refer to Removal and Installation.

   NO >>

   Repair harness or connector.