Diagnosis Procedure

Regarding Wiring Diagram information, refer to .

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 (Approx.)
      Connector	Terminal		Brake pedal depressed	Battery voltage
      M18	27

   Is the inspection result normal?

   YES

   GO TO 3 .

   NO

   GO TO 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 (with halogen headlamps) or Wiring Diagram (with LED headlamps).

3. CHECK HARNESS BETWEEN BCM AND A/T SHIFT SELECTOR 
   1. Disconnect A/T shift selector connector.
   2. Check continuity between BCM connector M80 terminal 108 and A/T shift selector connector M68 terminal 3.

      BCM		A/T shift selector		Continuity
      Connector	Terminal	Connector	Terminal
      M80	108	M68	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 4 .

   NO

   Repair or replace harness or connector.

4. CHECK GROUND CIRCUIT (A/T SHIFT SELECTOR) 

   Check continuity between A/T shift selector connector M68 terminal 3 and ground.

   A/T shift selector		Ground	Continuity
   Connector	Terminal
   M68	3		Yes

   Is the inspection result normal?

   YES

   Replace A/T shift selector. Refer to Removal and Installation .

   NO

   Repair or replace harness or connector.