Key Cancel Switch Does Not Operate

DOOR LOCK: SMART KEY SYSTEM: Key Cancel Switch does not Operate

Key Cancel Switch does not Operate

DESCRIPTION

When the key cancel switch is ON, all entry functions will stop operating. If the key cancel switch is not turned ON but all entry functions stop operating, one of the following is malfunctioning: 1) key cancel switch, 2) certification ECU, or 3) wire harness.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRELESS DOOR LOCK OPERATION
(a) Check that the wireless door lock function operates normally.
OK:
Wireless door lock function operates normally.
NG -- GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (w/ SMART KEY SYSTEM)
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (KEY CANCEL SWITCH)
(a) Check the Data List for proper functioning of the certification ECU.

Certification ECU





OK:
OFF (key cancel switch is OFF) appears on the screen.
OK -- REPLACE CERTIFICATION ECU
NG -- Continue to next step.

3. INSPECT KEY CANCEL SWITCH




(a) Measure the resistance of the switch.
Standard resistance:






NG -- REPLACE KEY CANCEL SWITCH
OK -- Continue to next step.

4. CHECK WIRE HARNESS (KEY CANCEL SWITCH - CERTIFICATION ECU AND BODY GROUND)




(a) Disconnect S12 switch connector.
(b) Disconnect S11 ECU connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE CERTIFICATION ECU