Automatic Transaxle (DTC/Circuit Diagnosis)

Regarding Wiring Diagram information, refer to SYSTEM WIRING DIAGRAMS (CVT Shift Lock System).

1. CHECK POWER SOURCE 
   1. Turn ignition switch OFF.
   2. Disconnect BCM connector M21.
   3. Check voltage between BCM connector and ground while pressing the brake pedal.

      BCM		Ground	Condition	Voltage (Approx.)
      Connector	Terminal		Brake pedal depressed	Battery voltage
      M21	27

   Is the inspection result normal?

   YES

   GO TO STEP 3  .

   NO

   GO TO STEP 2  .

2. CHECK STOP LAMPS 

   Do the stop lamps operate normally?

   Is the inspection result normal?

   YES

   Check the following:

   • Harness between fuse block (J/B) and BCM.
   • Fuse block (J/B).

   NO

   Refer to SYSTEM WIRING DIAGRAMS (CVT Shift Lock System).

3. CHECK HARNESS BETWEEN BCM AND CVT SHIFT SELECTOR 
   1. Disconnect CVT shift selector connector.
   2. Check continuity between BCM connector and CVT shift selector connector.

      BCM		CVT shift selector		Continuity
      Connector	Terminal	Connector	Terminal
      M18	108	M78	3	Yes

   3. Check continuity between BCM connector and ground.

      BCM		Ground	Continuity
      Connector	Terminal
      M18	108		No

   Is the inspection result normal?

   YES

   GO TO STEP 4  .

   NO

   Repair or replace harness or connector.

4. CHECK GROUND CIRCUIT (CVT SHIFT SELECTOR) 

   Check continuity between CVT shift selector connector and ground.

   CVT shift selector		Ground	Continuity
   Connector	Terminal
   M78	4		Yes

   Is the inspection result normal?

   YES

   Replace CVT shift selector. Refer to Removal and Installation .

   NO

   Repair or replace harness or connector.