Inspection Procedure
WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
- READ VALUE OF TECHSTREAM (UNLOCK WARNING SWITCH)
- Connect the Techstream to the DLC3.
- Turn the ignition switch ON with a key that cannot start the engine.
- On the Techstream, enter the following menus: Body Electrical / immobilizer / Data List / Key SW. Read the result.
Transponder key ECU:
TRANSPONDER KEY ECUItem Measurement Item / Display (Range) Normal Condition Diagnostic Note KEY SW Unlock warning switch signal / ON or OFF ON: Key is in ignition key cylinder
OFF: No key is in ignition key cylinder- OK: ON (key is in ignition key cylinder) appears on the screen.
OK: REPLACE TRANSPONDER KEY ECU
NG: GO TO NEXT STEP.
- INSPECT UNLOCK WARNING SWITCH ASSEMBLY
- Remove the unlock warning switch.
- Measure the resistance of the switch.
Standard resistance
UNLOCK WARNING SWITCH ASSEMBLYTester Connection Condition Specified Condition 1 - 2 Pushed Below 1 Ω Not pushed 10 kΩ or higher
NG: REPLACE UNLOCK WARNING SWITCH ASSEMBLY
OK: GO TO NEXT STEP.
- CHECK WIRE HARNESS (UNLOCK WARNING SWITCH - BODY GROUND)
- Disconnect the E6 switch connector.
- Measure the resistance of the wire harness side connector.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard resistance
WIRE HARNESS (UNLOCK WARNING SWITCH - BODY GROUND)Tester Connection Specified Condition E6-2 - Body ground Below 1 Ω
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: GO TO NEXT STEP.
- CHECK WIRE HARNESS (UNLOCK WARNING SWITCH - TRANSPONDER KEY ECU)
- Disconnect the E6 switch connector.
- Disconnect the E46 ECU connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance
WIRE HARNESS (UNLOCK WARNING SWITCH - TRANSPONDER KEY ECU)Tester Connection Specified Condition E6-1 - E46-3 (KSW) Below 1 Ω E6-1 or E46-3 (KSW) - Body ground 10 kΩ or higher
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: REPLACE TRANSPONDER KEY ECU