Sfi System Fail-Safe Chart

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
1Gr-Fe Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

Sfi System -- Fail-Safe Chart


If any of the following DTCs are stored, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily.

DTCs
Component
Fail-Safe Operation
Fail-Safe Deactivation Condition
P0031, P0032, P0051 and P0052
Air Fuel Ratio Sensor Heater
The ECM turns off the air fuel ratio sensor heater.
Ignition switch off
P0037, P0038, P0057 and P0058
Heated Oxygen Sensor Heater
The ECM turns off the heated oxygen sensor heater.
Ignition switch off
P0102, P0103
Mass Air Flow Meter
The ECM calculates the ignition timing according to the engine speed and throttle valve position.
Pass condition detected
P0110, P0112 and P0113
Intake Air Temperature Sensor
The ECM estimates the intake air temperature to be 20°C (68°F).
Pass condition detected
P0115, P0117 and P0118
Engine Coolant Temperature Sensor
The ECM estimates the engine coolant temperature to be 80°C (176°F).
Pass condition detected
P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0604, P0606, P0607, P060A, P060D, P060E, P0657, P2102, P2103, P2111, P2112, P2118, P2119 and P2135
Electronic Throttle Control System (ETCS)
The ECM cuts off the throttle actuator current and the throttle valve returns to 6° throttle position by the return spring.
The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing in accordance with the accelerator pedal opening angle, to allow the vehicle to continue at minimal speed.*1
Pass condition detected and then ignition switch turned off
P0327, P0328, P0332 and P0333
Knock Sensor
The ECM sets the ignition timing to maximum retard.
Ignition switch off
P0351 to P0356
Igniter
The ECM cuts the fuel.
Pass condition detected
P2120, P2121, P2122, P2123, P2125, P2127, P2128 and P2138
Accelerator Pedal Position Sensor
The accelerator pedal position sensor has 2 sensor circuits: Main and Sub.
If either of the circuits malfunctions, the ECM controls the engine using the other circuit.
If both of the circuits malfunction, the ECM regards the accelerator pedal as being released. As a result, the throttle valve is closed and the engine idles.
Pass condition detected and then ignition switch turned off
HINT:
  1. *1: The vehicle can be driven slowly when the accelerator pedal is depressed firmly and slowly. If the accelerator pedal is depressed quickly, the vehicle may speed up and slow down erratically.
  2. *2: Misfire related fail-safe operations occur when catalyst overheat malfunctions occur.