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TROUBLESHOOTING DIESEL FUEL 13A-500 • Damaged harness (Open circuit between back- up lamp switch and engine-ECU, and open circuit • Damaged connector (Engine-ECU connector, back-up lamp switch connector) • Failed engine-ECU DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III data list • Refer to Data List Reference Table . a. Item 73: Reverse shift switch Q: Is the check result normal? YES : Go to Step 7 . NO : Go to Step 2 . STEP 2. Check back-up lamp switch itself • Check back-up lamp switch itself (Refer to GROUP 22B − Transmission − Transmission Inspection <2WD>, GROUP 22C − Transmission − Transmission Inspection <4WD>). Q: Is the check result normal? YES : Go to Step 3 . NO : Replace the back-up lamp switch. STEP 3. Connector check: B-02 back-up lamp Q: Is the check result normal? YES : Go to Step 4 . NO : Repair or replace. STEP 4. Perform voltage measurement at B-02 • Disconnect connector, and measure at harness side. • Ignition switch: ON • Voltage between terminal No. 2 and earth. OK: System voltage Q: Is the check result normal? YES : Go to Step 5 . NO : Check intermediate connector C-30, and AK501385 1 2 AB Harness side B-02 (B) Connector: B-02 AK501385 1 2 AB Harness side B-02 (B) Connector: B-02 |