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TROUBLESHOOTING MULTIPORT FUEL INJECTION (MPI) <4A9> 13A-250 STEP 15. Check harness between A-124 (terminal • Check power supply line for damage. Q: Is the check result normal? YES : Replace starter. NO : Repair the damaged harness wire. Inspection Procedure 6: Starting impossible (Starter operative but no initial combustion) COMMENT ON TROUBLE SYMPTOM • Failure is possibly caused by failed ignition cir- cuit, failed fuel feed or other faults. PROBABLE CAUSES • Failed battery • Timing chain broken • Throttle valve fouled around • Failed ignition system • Failed fuel system • Failed engine-ECU <M/T> or engine-CVT-ECU <CVT> DIAGNOSIS PROCEDURE STEP 1. Check battery voltage. • Measure battery voltage at cranking. OK: 8 V or higher Q: Is the check result normal? YES : Go to Step 2 . NO : Check battery (Refer to GROUP 54A − Battery − On-vehicle Service − Battery Test ). STEP 2. With M.U.T.-III of communication. • Confirm the communication available M.U.T. -III and engine-ECU <M/T> or engine-CVT-ECU Q: Is the check result normal? YES : Go to Step 3 . NO : Check engine-ECU <M/T> or ). STEP 3. M.U.T.-III diagnosis code Q: Is the diagnosis code set? YES : Inspection chart for diagnosis codes (Refer to NO : Go to Step 4 . STEP 4. M.U.T.-III actuator test • Item 07: Fuel pump OK: Operating sound of fuel pump can be Q: Is the check result normal? YES : Go to Step 5 . NO : Check fuel pump system (Refer to AK402056 1 Connector: A-124 A-124 Harness side AC A-124 Main Index Group TOC |