ON-BOARD DIAGNOSTIC SYSTEM FAIL-SAFE FUNCTION [FW6A-EL]

id050225280200


Purpose/Function

•  If a transaxle malfunction is detected by the malfunction detection function, the fail-safe function limits the transaxle control.
•  Even if the transaxle has a malfunction, the fail-safe function assures the minimum vehicle driveability.

Construction/Operation

DTC separate fail-safe function

—: Not applicable

DTC No.

Description

Fail-safe function
P0218:00
Automatic transaxle protection control
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0500:00
Vehicle speed signal circuit malfunction
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0666:00
ECU internal temperature sensor circuit(s) malfunction
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
P0667:00
ECU internal temperature sensor two-range/performance problem
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
P06B8:00
NVRAM malfunction
—
P0705:00
Transaxle range sensor circuit malfunction
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0706:00
Transaxle range sensor range/performance problem
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0711:00
TFT sensor range/performance problem
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
P0712:00
TFT sensor circuit low input
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
P0713:00
TFT sensor circuit high input
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
P0716:00
Turbine/Input shaft speed sensor range/performance problem
•  Set to TCC control.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
•  Inhibits 5GR and 6GR.
•  Inhibits shift down when the accelerator pedal is depressed.
P0717:00
Open circuit in turbine/input shaft speed sensor circuit
•  Set to TCC control.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
•  Inhibits 5GR and 6GR.
•  Inhibits shift down when the accelerator pedal is depressed.
P0721:00
Output shaft speed sensor range/performance problem
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0722:00
Open circuit in output shaft speed sensor circuit
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0729:00
6GR incorrect ratio
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0731:00
1GR incorrect ratio
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0732:00
2GR incorrect ratio
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0733:00
3GR incorrect ratio
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0734:00
4GR incorrect ratio
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0735:00
5GR incorrect ratio
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0736:00
Gear reverse incorrect ratio
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
P0741:00
TCC control solenoid stuck off
•  Inhibits TCC control.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0743:00
TCC control solenoid circuit malfunction
•  Set to emergency mode.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0746:00
Pressure control solenoid stuck off
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0748:00
Pressure control solenoid circuit malfunction
•  Set to emergency mode.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0751:00
Shift solenoid No.1 stuck off
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0752:00
Shift solenoid No.1 stuck on
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0753:00
Shift solenoid No.1 circuit malfunction
•  Set to emergency mode.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0756:00
Shift solenoid No.2 stuck off
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0757:00
Shift solenoid No.2 stuck on
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0758:00
Shift solenoid No.2 circuit malfunction
•  Set to emergency mode.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0761:00
Shift solenoid No.3 stuck off
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0762:00
Shift solenoid No.3 stuck on
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0763:00
Shift solenoid No.3 circuit malfunction
•  Set to emergency mode.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0766:00
Shift solenoid No.4 stuck off
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0767:00
Shift solenoid No.4 stuck on
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0768:00
Shift solenoid No.4 circuit malfunction
•  Set to emergency mode.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0771:00
On/off solenoid stuck off
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0772:00
On/off solenoid stuck on
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0773:00
On/off solenoid circuit malfunction
•  Set to emergency mode.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0780:00
Gear shifting malfunction
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P079A:00
Shift solenoid No.3 stuck off/On/off solenoid stuck on
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0819:00
M position switch/Up switch/Down switch signal error
•  Inhibits manual mode.
P0842:00
Oil pressure switch No.1 stuck on
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0843:00
Oil pressure switch No.1 stuck off
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0847:00
Oil pressure switch No.2 stuck on
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0848:00
Oil pressure switch No.2 stuck off
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0872:00
Oil pressure switch No.3 stuck on
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0873:00
Oil pressure switch No.3 stuck off
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0877:00
Oil pressure switch No.4 stuck on
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0878:00
Oil pressure switch No.4 stuck off
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0882:00
TCM power supply voltage low
•  Set to emergency mode.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0883:00
TCM power supply voltage high
•  Set to emergency mode.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P0C2C:00
Electric AT oil pump rotation malfunction
•  Inhibits i-stop control.
P1728:00
Clutch slippage
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Maximizes the line pressure.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P1738:00
Automatic transaxle internal malfunction
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
P1784:00
Hi cut valve stuck off/R-3-5 cut valve stuck on
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
P181F:00
Electric AT oil pump/Electric AT oil pump relay circuit malfunction
•  Inhibits i-stop control.
P2712:00
Oil pump shift valve stuck
•  Inhibits i-stop control.
U0073:00
CAN system communication error (HS CAN)
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
U0074:00
CAN system communication error (local CAN between TCM and PCM)
•  Set to TCC control.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
•  Inhibits 5GR and 6GR.
•  Inhibits shift down when the accelerator pedal is depressed.
U0100:00
Communication error to PCM (HS CAN)
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
U0115:00
Communication error to PCM (local CAN between TCM and PCM)
•  Set to TCC control.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
•  Inhibits 5GR and 6GR.
•  Inhibits shift down when the accelerator pedal is depressed.
U0121:00
Communication error to DSC HU/CM
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
U0141:00
Communication error to BCM
•  Inhibits learning control.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
U0155:00
Communication error to instrument cluster
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
U0442:00
Invalid data received from PCM (local CAN between TCM and PCM)
•  Set to TCC control.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits 5GR and 6GR.
•  Inhibits shift down when the accelerator pedal is depressed.


Emergency mode

•  The emergency mode is a control for preventing transaxle damage or vehicle inoperability.
•  If these modes are set, the TCM output is inhibited. Therefore, all solenoids are turned off and the following conditions occur:
―  When the accelerator pedal is depressed, the engine speed is higher than normal.
―  When N to D position and N to R position are selected, the shift shock is greater than during normal shifting.


Neutral idle control

•  System which automatically switches the transaxle to neutral internally while the vehicle is stopped in the D position.