Unlock Warning Switch Circuit: Procedure
WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- READ VALUE ON TECHSTREAM (UNLOCK WARNING SWITCH)
- Connect the Techstream to the DLC3.
- Turn the ignition switch on (IG) and turn the Techstream main switch on.
- Select the items below in the "DATA LIST" and read the display on the Techstream.BODY:
Item Measurement Item/Display (Range) Normal Condition Diagnostic Note KEY UNLK WRN SW Unlock warning switch/ON or OFF ON: Ignition key inserted
OFF: Ignition key is not inserted- OK
When the ignition switch is operated, the display changes as shown above.
NG → See step 2
OK → PROCEED TO PROBLEM SYMPTOMS TABLE NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
- INSPECT MULTIPLEX NETWORK BODY ECU (KSW TERMINAL)
- Turn the ignition switch off.
- Disconnect the multiplex network body ECU (D7) connector.
- Measure the resistance according to the value(s) in the table below.
Resistance
Tester Connection Condition Specified Condition D7-21 (KSW) - Body ground Ignition key is inserted Below 1 Ω D7-21 (KSW) - Body ground Ignition key is not inserted 10 kΩ or higher
NG → See step 3
OK → PROCEED TO PROBLEM SYMPTOMS TABLE NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
- INSPECT UNLOCK WARNING SWITCH
- Disconnect the unlock warning switch connector.
- Measure the resistance according to the value(s) in the table below.
Resistance
Tester Connection Condition Specified Condition D31-1 - D31-2 Switch pushed
(Ignition key is inserted)Below 1 Ω D31-1 - D31-2 Switch released
(Ignition key is not inserted)10 kΩ or higher
NG → REPLACE UNLOCK WARNING SWITCH
OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (BETWEEN BODY ECU, BODY GROUND - UNLOCK WARNING SWITCH)