Inspection Procedure
WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
- DELETE DTC AND INSERT ALL PRESENTLY AVAILABLE KEYS TO CHECK WHETHER ENGINE STARTS OR NOT
- Delete DTC (see DTC CHECK/CLEAR ).
- Insert all the presently available keys to check whether the engine starts or not.
Result:
ALL PRESENTLY AVAILABLE KEYSResult Proceed to All keys do not start engine (B2796 is output) A All keys start engine (B2796 is not output) B Specific key does not start engine (B2796 is output) C - B: NO PROBLEM
- C: REPLACE SPECIFIC KEY
- A: GO TO NEXT STEP
- CHECK WIRE HARNESS (TRANSPONDER KEY ECU ASSEMBLY - TRANSPONDER KEY AMPLIFIER)
- Disconnect the T19 ECU connector.
- Disconnect the T10 amplifier connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance
TRANSPONDER KEY ECU ASSEMBLY - TRANSPONDER KEY AMPLIFIERTester Connection Specified Condition T19-8 (VC5) - T10-1 (VC5) Below 1 Ω T19-11 (CODE) - T10-4 (CODE) T19-12 (TXCT) - T10-5 (TXCT) T19-13 (AGND) - T10-7 (GND) T19-8 (VC5) or T10-1 (VC5) - Body ground 10 kΩ or higher T19-11 (CODE) or T10-4 (CODE) - Body ground T19-12 (TXCT) or T10-5 (TXCT) - Body ground T19-13 (AGND) or T10-7 (GND) - Body ground - NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
- OK: GO TO NEXT STEP
- CHECK OPERATION OF TRANSPONDER KEY AMPLIFIER
- After replacing the transponder key amplifier with a normally functioning transponder key amplifier, check that the engine starts.
OK: Engine starts.
- NG: REPLACE TRANSPONDER KEY ECU ASSEMBLY
- OK: END (TRANSPONDER KEY AMPLIFIER IS DEFECTIVE)
- After replacing the transponder key amplifier with a normally functioning transponder key amplifier, check that the engine starts.