Dtc Description

DTC Description

DTC DETECTION LOGIC

If all of door motors DTC (B24F5-93, B24F6-93, B24F7-93, B24F8-93) are detected, check “DOOR MOTOR CIRCUIT”. Refer to Diagnosis Procedure.

POSSIBLE CAUSE

• Harness and connector (mode door motor circuit is open or shorted to ground)

• Mode door motor installation condition

• Mode door motor

• A/C auto amp.

FAIL-SAFE

—

Confirmation Procedure

Confirmation Procedure

1. PERFORM DTC CONFIRMATION PROCEDURE

   1. CONSULT

      1. Ignition switch ON.

      2. Select “Self Diagnostic Result” mode of “HVAC”.

      3. Check DTC.

   Is DTC detected?

   YES>>

   Refer to DTC Diagnosis Procedure.

   NO>>

   To check malfunction symptom before repair: Refer to Intermittent Incident.

   NO>>

   Confirmation after repair: Inspection End.

Dtc Diagnosis Procedure

DTC 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 FOR OPEN

   1. 1. Ignition switch OFF.

      2. Disconnect mode door motor 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 CIRCUIT

   1. 1. Connect mode door motor connector.

      2. Ignition switch ON.

      3. Confirm output waveform between mode door motor harness connector and ground with 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 auto amp. connector.

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

         Mode door motor		A/C auto amp.		Continuity
         Connector	Terminal	Connector	Terminal
         M166	1	M33	1	Yes

   Is the inspection result normal?

   YES >>

   Replace A/C auto 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 auto amp. connector.

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

         Mode door motor		A/C auto amp.		Continuity
         Connector	Terminal	Connector	Terminal
         M166	3	M33	22	Yes

   Is the inspection result normal?

   YES >>

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

   NO >>

   Repair harness or connector.