Fail-Safe Operation

If any of the following codes is recorded, the Engine Control Module enters fail-safe mode and substitutes predetermined values to replace incorrect sensor inputs.

Data Trouble Code No. P0100

FAIL-SAFE OPERATION:
Ignition timing fixed at 5° BTDC.
Injection time fixed:
Starting 11.0 milliseconds.
Closed Throttle Position Switch ON 3.5 milliseconds.
Closed Throttle Position Switch OFF 6.3 milliseconds.

DEACTIVATION CONDITIONS:
When returned to normal condition

Data Trouble Code No. P0110

FAIL-SAFE OPERATION:
Intake air temperature is fixed at 20°C (68°F).

DEACTIVATION CONDITIONS:
When returned to normal condition

Data Trouble Code No. P0115

FAIL-SAFE OPERATION:
Engine coolant temperature is fixed at 80°C (176°F).

DEACTIVATION CONDITIONS:
When returned to normal condition

Data Trouble Code No. P0120

FAIL-SAFE OPERATION:
Terminal VTA is fixed at 0°.

DEACTIVATION CONDITIONS:
The following conditions must be repeated at least 2 times consecutively.
When closed throttle position switch is ON:
Terminal VTA voltage is between 0.1 volts and 0.95 volts.

Data Trouble Code No. P0135
Data Trouble Code No. P0141
Data Trouble Code No. P0155

FAIL-SAFE OPERATION:
The heater circuit in which an abnormality is detected is turned off.

DEACTIVATION CONDITIONS:
Ignition switch OFF

Data Trouble Code No. P0325
Data Trouble Code No. P0330

FAIL-SAFE OPERATION:
Max. timing retardation.

DEACTIVATION CONDITIONS:
Ignition switch OFF

Data Trouble Code No. P0720

FAIL-SAFE OPERATION:
Gears are shifted according to the engine rpm and throttle angle.

DEACTIVATION CONDITIONS:
When returned to normal condition

Data Trouble Code No. P0753

FAIL-SAFE OPERATION:
Power to the solenoid valve and lock-up solenoid valve is cut off.

DEACTIVATION CONDITIONS:
When returned to normal condition

Data Trouble Code No. P0758

FAIL-SAFE OPERATION:
Power to the solenoid valve and lock-up solenoid valve is cut off.

DEACTIVATION CONDITIONS:
When returned to normal condition

Data Trouble Code No. P0773

FAIL-SAFE OPERATION:
Power to the solenoid valve is cut off.

DEACTIVATION CONDITIONS:
When returned to normal condition

Data Trouble Code No. P1300

FAIL-SAFE OPERATION:
Fuel cut

DEACTIVATION CONDITIONS:
When Ignition Verification signal is detected for 6 consecutive ignitions.

Data Trouble Code No. P1605

FAIL-SAFE OPERATION:
Max. timing retardation.

DEACTIVATION CONDITIONS:
When returned to normal condition

Data Trouble Code No. P1765

FAIL-SAFE OPERATION:
Power to the solenoid valve is cut off.

DEACTIVATION CONDITIONS:
When returned to normal condition.

BACK-UP FUNCTION

If there is trouble with the program in the Engine Control Module and Ignition signals are not output from the processor, the Engine Control Module controls fuel injection and ignition timing at predetermined levels as a back-up function to make it possible to continue to operate the vehicle. The ignition timing is fixed at 5 BTDC, without relation to the engine speed. If the engine is controlled by the back-up function, the malfunction indicator lamp lights up to warn the driver of the malfunction but the diagnostic trouble code is not output.