5A
Fail-Safe Table
This function is provided by the safe mechanism that assures safe driveability even when the solenoid valve, sensor or its circuit fails.
The table below shows the fail safe function for each fail condition of sensor, TCM or its circuit.
DTC No. Trouble Area Fail safe function
Type 1 Type 2
icon  P0705 34 Transmission Range Sensor Circuit Malfunction (PRNDL Input)
• Selected range is set in priority order shown below.
D>2>L>R>N>P
• Lock-up function is inhibited to operate.
• Reverse control operation, which inhibit reverse driving at “R” range while vehicle runs forward more than 11 km/h (7 mile/h), is inhibited.
• Learning control is inhibited.
icon  P0707 Transmission Range Sensor Circuit Low
• Range is assumed to be “D” range.
• Lock-up function is inhibited to operate.
• Reverse control operation is inhibited.
• Learning control is inhibited.
icon  P0712 38 Transmission Fluid Temperature Sensor “A” Circuit Low
• A/T fluid temperature is assumed to be 200 °C (392 °F).
• Upshifting to 4th gear is inhibited.
• Lock-up function is inhibited to operate.
• Garage shift control operation, which controls line pressure at shifting “N” to “R” or “D” range, is inhibited.
• Learning control is inhibited.
icon  P0713 36 Transmission Fluid Temperature Sensor “A” Circuit High
icon  P0717 14 Input / Turbine Speed Sensor Circuit No Signal
• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.
• Upshifting to 4th gear is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Garage shift control operation is inhibited.
• Learning control is inhibited.
icon  P0722 31 Output Speed Sensor Circuit No Signal
• Vehicle speed which is calculated by input shaft speed sensor signal is used for gear shifting control instead of vehicle speed calculated by output shaft speed sensor signal.
• Upshifting to 4th gear is inhibited.
• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Garage shift control operation is inhibited.
• Learning control is inhibited.
icon  P0727 35 Engine Speed Input Circuit No Signal
• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.
• Upshifting to 4th gear is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Garage shift control operation is inhibited.
• Learning control is inhibited.
• Engine revolution is assumed to be 0 RPM.
icon  P0787 13 Shift / Timing Solenoid Control Circuit Low
• Power supply for all solenoid valves is cut.
• Gear position is fixed according to select lever position as shown in the following
R: Reverse
D: 3rd
3: 3rd
L: 3rd
• Lock-up function is inhibited to operate.
• Line pressure control is inhibited to operate.
icon  P0788 Shift / Timing Solenoid Control Circuit High
icon  P0962 41 Pressure Control Solenoid “A” Control Circuit Low
• Power supply for all solenoid valves is cut.
• Gear position is fixed according to select lever position as shown in the following
R: Reverse
D: 3rd
3: 3rd
L: 3rd
• Lock-up function is inhibited to operate.
• Line pressure control is inhibited to operate.
icon  P0963 42 Pressure Control Solenoid “A” Control Circuit High
icon  P0973 22 Shift Solenoid “A” Control Circuit Low
• Power supply for all solenoid valves is cut.
• Gear position is fixed according to select lever position as shown in the following
R: Reverse
D: 3rd
3: 3rd
L: 3rd
• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited to operate.
icon  P0974 21 Shift Solenoid “A” Control Circuit High
icon  P0976 24 Shift Solenoid “B” Control Circuit Low
icon  P0977 23 Shift Solenoid “B” Control Circuit High
icon  P1702 52 Internal Control Module Memory Check Sum Error
• Power supply for all solenoid valves is cut.
• Gear position is fixed according to select lever position as shown in the following
R: Reverse
D: 3rd
3: 3rd
L: 3rd
• Lock-up function is inhibited to operate.
• Line pressure control is inhibited to operate.
icon  P1703 86 CAN Invalid Data from other ECU In case of throttle position signal malfunction:
• Throttle opening used for line pressure control is assumed to be 100%.
• Throttle opening used for gear shifting control is assumed to be 0%.
• Upshifting to 4th gear is inhibited.
• Lock-up function is inhibited to operate.
• Learning control is inhibited.
In case of engine coolant temperature signal malfunction:
• After 15 minutes passing from malfunction detection, engine coolant temperature is assumed to be 90 °C (194 °F).
In case of engine revolution signal malfunction:
• Engine revolution is assumed to be 0 RPM.
• Upshifting to 4th gear is inhibited.
• Garage shift control operation is inhibited.
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Learning control is inhibited.
In case of engine torque signal malfunction:
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Upshifting to 4th gear is inhibited.
• Learning control is inhibited.
icon  P1705 51 Engine Coolant Temperature Signal Circuit Malfunction After 15 minutes passing from malfunction detection, engine coolant temperature is assumed to be 90 °C (194 °F).
P1723 87 Range Select Switch Malfunction “3” position switch is assumed to be OFF.
icon  P1724 33 Throttle Position Signal Input Circuit Low
• Throttle opening used for line pressure control is assumed to be 100%.
• Throttle opening used for gear shifting control is assumed to be 0%.
• Upshifting to 4th gear is inhibited.
• Lock-up function is inhibited to operate.
• Garage shift control operation is inhibited.
• Learning control is inhibited.
icon  P1725 32 Throttle Position Signal Input Circuit High
icon  P1730 64 Engine Torque Signal Circuit Malfunction
• Engine torque is assumed to be that of last value before detecting malfunction.
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Upshifting to 4th gear is inhibited.
• Learning control is inhibited.
icon  P1735 56 Air Conditioner Signal Circuit Malfunction Air conditional signal is assumed to be OFF.
icon  P1774 76 Control Module Communication Bus Off
• Throttle opening used for line pressure control is assumed to be 100%.
• Throttle opening used for gear shifting control is assumed to be 0%.
• Engine revolution is assumed to be 0 RPM.
• After 15 minutes passing from ignition switch turned ON, engine coolant temperature is assumed to be 90 °C (194 °F).
• Upshifting to 4th gear is inhibited.
• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Garage shift control operation is inhibited.
• Learning control is inhibited.
icon  P1777 TCM Lost Communication with ECM (Reception Error)
icon  P1895 27 Torque Control Signal Malfunction Torque reducing request to ECM (torque reduction control) is inhibited.
icon  P2769 26 Torque Converter Clutch Circuit Low
• Lock-up function is inhibited to operate.
• Upshifting to 4th gear is inhibited when A/T fluid temperature is more than 150 °C (302 °F).
icon  P2770 25 Torque Converter Clutch Circuit High
• Lock-up function is inhibited to operate.
• Upshifting to 4th gear is inhibited when A/T fluid temperature is more than 150 °C (302 °F).
• Vehicle speed is slower than 15 km/h (9 mile/h), gear position is fixed in 1st gear for prevention of engine stall.