|
|
Fail-safe Chart =NCEC0040 The ECM enters fail-safe mode if any of the following malfunctions is detected due to the open or short cir- DTC No. Detected items Engine operating condition in fail-safe mode CON- SULT-II GST ECM*1 P0100 0100 Mass air flow sensor Engine speed will not rise more than 2,400 rpm due to the fuel cut. P0115 0115 Engine coolant tempera- Engine coolant temperature will be determined by ECM based on the time Condition Engine coolant temperature decided (CONSULT-II display) Just as ignition switch is 40°C (104°F) More than approx. 4 minutes 80°C (176°F) Except as shown above 40 - 80°C (104 - 176°F) (Depends on the time) P0120 0120 Throttle position sensor Throttle position will be determined based on the injected fuel amount and Condition Driving condition When engine is idling Normal When accelerating Poor acceleration Unable to access ECM Unable to ECM ECM fail-safe activating condition ECM fail-safe operation Engine speed Engine speed will not rise more than 3,000 rpm Fuel injection Simultaneous multiport fuel injection system Ignition timing Ignition timing is fixed at the preset valve Fuel pump Fuel pump relay is “ON” when engine is running and “OFF” when engine stalls IACV-AAC valve Full open Replace ECM, if ECM fail-safe condition is confirmed. *: In Diagnostic Test Mode II (Self-diagnostic results) TROUBLE DIAGNOSIS — GENERAL DESCRIPTION QG16 I 18DE Fail-safe Chart EC-81 |