DTC Diagnosis Procedure

The door lock assembly detects condition of the key cylinder switch and transmits to BCM as the LOCK or UNLOCK signal.

1. CHECK DOOR KEY CYLINDER SWITCH 

   With CONSULT

   Check suspect door lock assembly (key cylinder switch) KEY CYL LK-SW and KEY CYL UN-SW in DATA MONITOR mode with CONSULT.

   • When key inserted in suspect key cylinder is turned to LOCK:

   KEY CYL LK-SW

   : ON

   • When key inserted in suspect key cylinder is turned to UNLOCK:

   KEY CYL UN-SW

   : ON

   Is the inspection result normal?

   YES

   Key cylinder switch signal is OK.

   NO

   GO TO 2 .

2. CHECK DOOR KEY CYLINDER SWITCH GROUND HARNESS 
   1. Turn ignition switch OFF.
   2. Disconnect suspect door lock assembly (key cylinder switch).
   3. With sliding door in the closed position, check continuity between door lock assembly (key cylinder switch) connector D14 terminal 4, D303 terminal 3 or D609 terminal 3 and body ground.

   Item	Connector	Condition	Terminals	Continuity
   Front door lock assembly LH	D14	Sliding door closed	4 - Ground	Yes
   Sliding door lock assembly	D303		3 - Ground
   Back door lock assembly	D609		3 - Ground

   Is the inspection result normal?

   YES

   GO TO 3 .

   NO

   Repair or replace harness.

3. CHECK DOOR KEY CYLINDER SWITCH 

   Check continuity between suspect door lock assembly (key cylinder switch) terminals.

   Item	Terminals	Condition	Continuity
   Front door lock assembly LH	5 - 4	Key is turned to UNLOCK.	Yes
   		Key is turned to LOCK or neutral.	No
   	6 - 4	Key is turned to LOCK.	Yes
   		Key is turned to UNLOCK or neutral.	No
   Sliding door lock assembly	4 - 3	Key is turned to UNLOCK.	Yes
   		Key is turned to LOCK or neutral.	No
   	2 - 3	Key is turned to LOCK.	Yes
   		Key is turned to UNLOCK or neutral.	No
   Back door lock assembly	2 - 3	Key is turned to UNLOCK.	Yes
   		Key is turned to LOCK or neutral.	No
   	4 - 3	Key is turned to LOCK.	Yes
   		Key is turned to UNLOCK or neutral.	No

   Is the inspection result normal?

   YES

   GO TO 4 .

   NO

   Replace door lock assembly (key cylinder switch). Refer to Removal and Installation (front LH), Removal and Installation (sliding), Removal and Installation (back).

4. CHECK DOOR KEY CYLINDER HARNESS 
   1. Disconnect BCM connector M18.
   2. Check continuity between BCM connector M18 terminals 7, 8 and suspect door lock assembly (key cylinder switch) connector D14 terminals 5, 6, D303 terminals 4, 2 or D609 terminals 2, 4.

      Connector	Terminals	Connector	Terminals	Continuity
      BCM M18	7	Front door lock assembly LH (key cylinder switch) D14	5	Yes
      	8		6
      	7	Sliding door lock assembly (key cylinder switch) D303	4
      	8		2
      	7	Back door lock assembly (key cylinder switch) D609	2
      	8		4

   3. Check continuity between BCM connector M18 terminals 7, 8 and ground.

      Connector	Terminals	Ground	Continuity
      BCM M18	7		No
      	8

   Is the inspection result normal?

   YES

   Replace BCM. Refer to Removal and Installation .

   NO

   Repair or replace harness.