Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

1. CHECK POWER SOURCE
   
   
   1. Turn ignition switch OFF.
   2. Disconnect BCM connector M18.
   3. Check voltage between BCM connector M18 terminal 27 and ground while pressing the brake pedal.

      BCM		Ground	Condition	Voltage
      Connector	Terminal		Brake pedal depressed	Battery voltage
      M18	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 WIRING DIAGRAM .

3. CHECK HARNESS BETWEEN BCM AND CVT SHIFT SELECTOR
   
   
   1. Disconnect CVT shift selector connector.
   2. Check continuity between BCM connector M80 terminal 108 and CVT shift selector connector M78 terminal 3.

      BCM		CVT shift selector		Continuity
      Connector	Terminal	Connector	Terminal
      M80	108	M78	3	Yes

   3. Check continuity between BCM connector M80 terminal 108 and ground.

      BCM		Ground	Continuity
      Connector	Terminal
      M80	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 M78 terminal 4 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.