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On Board Diagnosis Logic The ECM checks if battery voltage is within the tolerance range for the engine control system. Malfunction is detected when ... Check Items (Possible Cause) I An abnormally high voltage from the battery is sent to ECM. I Incorrect jump starting I Battery I Alternator I ECM DTC Confirmation Procedure With CONSULT-II 1) Check the following. I Jumper cables are connected for jump starting. I Battery or alternator has been replaced. 2) Check that the positive battery terminal is connected to battery properly. If NG, reconnect it properly. If DTC is not detected, go to next step. 7) Start engine and wait one minute at idle. Without CONSULT-II 1) Check the following. I Jumper cables are connected for jump starting. I Battery or alternator has been replaced. 2) Check that the positive battery terminal is connected to battery properly. If NG, reconnect it properly. If DTC is not detected, go to next step. 8) Start engine and wait one minute at idle. Diagnostic Procedure 1 INSPECTION START Are jumper cables connected for the jump starting? Yes or No Yes E GO TO 3. No E GO TO 2. DTC 0502 BATTERY VOLTAGE ZD30DDTi EC-153 |