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 (TRANSPONDER KEY COIL)
- 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 / Antenna Coil Status. Read the result.
Transponder key ECU:
TRANSPONDER KEY ECUItem Measurement Item / Display (Range) Normal Condition Diagnostic Note ANTENNA COIL Transponder key coil condition / NORMAL or FAIL NORMAL: Transponder key coil is normal
FAIL: Transponder key coil is malfunctioning- OK: NORMAL (Transponder key coil is normal) appears on the screen.
OK: REPLACE TRANSPONDER KEY ECU
NG: Go TO NEXT STEP.
- CHECK WIRE HARNESS (TRANSPONDER KEY ECU - TRANSPONDER KEY AMPLIFIER)
- Disconnect the E46 ECU connector.
- Disconnect the E5 amplifier connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance
WIRE HARNESS (TRANSPONDER KEY ECU - TRANSPONDER KEY AMPLIFIER)Tester Connection Specified Condition E46-14 (VC5) - E5-1 (VC5) Below 1 Ω E46-15 (CODE) - E5-4 (CODE) E46-4 (TXCT) - E5-5 (TXCT) E46-5 (AGND) - E5-7 (AGND) E46-14 (VC5) or E5-1 (VC5) - Body ground 10 kΩ or higher E46-15 (CODE) or E5-4 (CODE) - Body ground E46-4 (TXCT) or E5-5 (TXCT) - Body ground E46-5 (AGND) or E5-7 (AGND) - Body ground
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: REPLACE TRANSPONDER KEY AMPLIFIER