FAIL-SAFE FUNCTION [GF4AX-EL]


BUE050200000N06

• In the fail-safe function, minimum vehicle driveability is obtained by changing the signals that are determined to be irregular by the malfunction detection function to the preset values, and limiting PCM control.

DTC No.

On-board diagnostic function

Detection condition

Fail-safe

TCC

P0500
Vehicle speed signal circuit malfunction
• No vehicle speed signal is input to PCM when and engine coolant temperature is 60 °C {140 °F} or more, input/turbine speed sensor signal is 1,050 rpm or more and selector lever position is at D, 2, or 1 range.
• PCM calculation from input/turbine speed sensor signal
Enabled
P0710
Transaxle fluid temperature (TFT) sensor circuit malfunction (short to ground/open circuit)
• Input voltage from the TR switch to PCM terminal 22 is 0.1 V or less or 4.9 V or more when the vehicle speed is 20 km/h {12 mph} or more.
• Normal shift control occurs when the ATF temperature is considered to be 135 °C {275 °F}
Enabled
P0715
Input/turbine speed sensor circuit malfunction
• No input/turbine speed sensor signal to PCM terminals 67 and 93 when vehicle speed is 42 km/h {26 mph} or more and selector lever position is at D, 2, or 1 range.
• Shift control is performed according to vehicle speed signal
Disabled
P0743
Torque converter clutch (TCC) control solenoid valve circuit malfunction
• If voltage is stuck at 0 V or B+ in TCC control solenoid valve control terminal 65 of the PCM when the solenoid valve operates according to PCM calculation.
• Maximizes line pressure
Disabled
P0745
Pressure control solenoid valve circuit malfunction
• If voltage is stuck at 0 V or B+ in pressure control solenoid control valve control terminal 91 of the PCM when the solenoid valve operates according to PCM calculation.
• Pressure control solenoid valve operation is stopped and line pressure held at maximum
Disabled
P0750
Shift solenoid A circuit malfunction
• If voltage is stuck at 0 V or B+ in shift solenoid A control terminal 92 of the PCM when the solenoid valve operates according to PCM calculation.
• If one or two shift solenoid valves develop a malfunction, remaining normal shift solenoid valves are controlled to prevent loss of driveability as much as possible
• If all shift solenoid valves develop malfunctions, then operation of all shift solenoid valves is stopped, and if in D or 2 range, then fixed in 3rd gear, or if in 1 range, then fixed in 1st gear
Disabled
P0755
Shift solenoid B circuit malfunction
• If voltage is stuck at 0 V or B+ in shift solenoid B control terminal 66 of the PCM when the solenoid valve operates according to PCM calculation.
Disabled
P0760
Shift solenoid C circuit malfunction
• If voltage is stuck at 0 V or B+ in shift solenoid C control terminal 40 of the PCM when the solenoid valve operates according to PCM calculation.
Disabled
P0768
3-2 timing solenoid valve circuit malfunction
• If voltage is stuck at 0 V or B+ in 3-2 timing solenoid valve control terminal 39 of the PCM when the solenoid valve operates according to PCM calculation.
• Operation of 3-2 timing solenoid valve is stopped
Disabled
P1783
ATF overheating
• ATF temperature is 138 °C {280 °F} or more.
N/A
Enabled