Unlock Warning Switch Circuit

THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Unlock Warning Switch Circuit

Unlock Warning Switch Circuit

DESCRIPTION

The key unlock warning switch assembly turns on when the ignition key is inserted into the ignition key cylinder and turns off when the ignition key is removed.
The theft warning ECU assembly operates the key confinement prevention function while the key unlock warning switch assembly is on.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH ASSEMBLY)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream main switch on.
(d) Select the item below in the Data List and then read the display on the Techstream.

Security





OK:
When the key is in the ignition key cylinder, "ON" appears on the screen.
NG -- INSPECT UNLOCK WARNING SWITCH ASSEMBLY
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT UNLOCK WARNING SWITCH ASSEMBLY




(a) Remove the unlock warning switch assembly Unlock Warning Switch.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE UNLOCK WARNING SWITCH ASSEMBLY
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - BODY GROUND)




(a) Disconnect the E6 unlock warning switch assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - THEFT WARNING ECU ASSEMBLY)
(a) Disconnect the E72 theft warning ECU assembly connectors.




(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE THEFT WARNING ECU ASSEMBLY