Key Lock-In Prevention Function Does Not Work Properly

DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Key Lock-in Prevention Function does not Work Properly

Key Lock-in Prevention Function does not Work Properly

DESCRIPTION

To prevent the key from being locked in the vehicle, the integration relay prevents the door from being locked by monitoring 2 switches: 1) the unlock warning switch, which turns ON when the key is inserted into the ignition key cylinder; and 2) the driver side courtesy light switch, which turns ON when the driver side door is opened.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK NO. 1 ROOM LIGHT ASSEMBLY
(a) Move the room light switch to the DOOR position and open the driver side door. Then check that the room light illuminates.
OK:
Room light illuminates.
OK -- INSPECT UNLOCK WARNING SWITCH ASSEMBLY
NG -- Continue to next step.
2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE)





(a) Remove the courtesy light switch.
(b) Measure the resistance of the switch.
Standard resistance:






NG -- REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (DRIVER SIDE)
OK -- Continue to next step.
3. CHECK WIRE HARNESS (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)





(a) Disconnect the D9 switch connector.
(b) Disconnect the 1A junction block connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
4. INSPECT UNLOCK WARNING SWITCH ASSEMBLY





(a) Remove the unlock warning switch.
(b) Measure the resistance of the switch.
Standard resistance:






NG -- REPLACE UNLOCK WARNING SWITCH ASSEMBLY
OK -- Continue to next step.
5. CHECK WIRE HARNESS (UNLOCK WARNING SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY) AND BODY GROUND)





(a) Disconnect the U1 switch connector.
(b) Disconnect the 1E junction block connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
6. CHECK OPERATION OF INTEGRATION RELAY
(a) After replacing the integration relay with a normally functioning relay, check that the power door lock operates normally.
OK:
Power door lock operates normally.
NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
OK -- NORMAL (INTEGRATION RELAY DEFECTIVE)