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Fail Safe Data

This function is provided by the safe mechanism that assures safe driveability even when the solenoid valve, sensor or its circuit fails. The following table shows the fail safe function for each fail condition of sensor, solenoid, TCM or its circuit.

Fail Safe Data Table (1 Of 2)

DTC No. Trouble area Fail safe operation
P0753 21
22
Shift solenoid valve-A or its circuit
  • Power supply to shift solenoid valve, TCC solenoid valve and pressure control solenoid valve is cut.
  • Gear position is fixed as shown in the following.
    • When select lever position is

      R: Reverse

      D: 4th (O/D)

      2: 3rd

      L: 1st

  • Lock-up function is inhibited to operate. (Except P1702)
P0758 23
24
Shift solenoid valve-B or its circuit
P0748 41
42
Pressure control solenoid valve or its circuit
P1702 52 TCM
P0743 25
26
TCC solenoid valve or its circuit
  • Lock-up function is inhibited to operate.
  • Up-shift to 4th gear is inhibited when A/T fluid temperature is 150 °C (302 °F) or higher.
  • When TCC solenoid valve circuit open or shorted to power circuit, and vehicle speed is less than 10 km/h (6 mile/h), gear position is fixed in 1st gear for prevention of engine stall.
P0705
P0707
34 Transmission range sensor or its circuit
  • In case of circuit open, selected range is set as "D" range.
  • In case of circuit short (In case that 2 or more sensor signals are inputted), selected range is set in priority order shown below.

    N > R > L > 2 > D > P

P0710 36
38
Transmission fluid temperature sensor or its circuit Line pressure raising control at low fluid temperature is inhibited.
P0717 37 Input shaft speed sensor or its circuit
  • Power supply to shift solenoid valve and TCC solenoid valve is cut.
  • Gear position is fixed as shown in the following.
    • When select lever position is

      R: Reverse

      D: 4th (O/D)

      2: 3rd

      L: 1st

  • Lock-up function is inhibited to operate.
  • Reverse control operation, which inhibit reverse driving at "R" range while vehicle runs forward more than 7 km/h (4 mile/h), is inhibited.
P0722 31 Output shaft speed sensor or its circuit
Fail Safe Data Table (2 Of 2)

DTC No. Trouble area Fail safe operation
P1700 32
33
Throttle position signal circuit
  • Power supply to shift solenoid valve and TCC solenoid valve is cut.
  • Gear position is fixed as shown in the following.
    • When select lever position is
      1. R: Reverse
      2. D: 4th (O/D)
      3. 2: 3rd
      4. L: 1st
  • Lock-up function is inhibited to operate.
  • Torque reducing requirement to ECM (torque reduction control) is inhibited.
P1705 51 Engine coolant temperature signal circuit Engine coolant temperature is assumed as normal operating temperature, and controls of overdrive and lock-up is released from inhibition.
P1740 75 Cruise control signal circuit O/D and lock-up off control by cruise control signal is inhibited.
P1895 27 Torque reduction signal circuit Torque reducing requirement to ECM (torque reduction control) is inhibited.