Unlock Warning Switch Circuit

THEFT DETERRENT: TOYOTA VEHICLE INTRUSION PROTECTION SYSTEM: Unlock Warning Switch Circuit

Unlock Warning Switch Circuit

DESCRIPTION

The unlock warning switch turns on when the key is inserted into the ignition key cylinder and turns off when the key is removed.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK UN-LOCK WARNING SWITCH ASSEMBLY





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





NG -- REPLACE UN-LOCK WARNING SWITCH ASSEMBLY
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (TVIP ECU - UN-LOCK WARNING SWITCH)





(a) Disconnect the T3 TVIP ECU connector.
(b) Disconnect the U1 unlock warning switch connector.
(c) 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.
3. CHECK HARNESS AND CONNECTOR (UN-LOCK WARNING SWITCH - BODY GROUND)





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





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE TVIP ECU