FAIL-SAFE CHART
1. Fail-safe
This function minimizes the loss of operation when any abnormality occurs in a sensor or solenoid.
Fail-safe Control List
Malfunction Part |
Function |
---|---|
Transmission revolution sensor (NT) |
During a transmission revolution sensor (NT) malfunction, shift control is performed based on the transmission revolution sensor (SP2) signal. |
Transmission revolution sensor (SP2) |
During a transmission revolution sensor (SP2) malfunction, shift control is performed based on the wheel speed sensor signal. |
ATF temperature sensors (No. 1 and No. 2) |
During an ATF temperature sensor malfunction, up-shifting to 5th and 6th is prohibited. |
Shift solenoid valve SL1, SL2, SL3 and SL4 |
Stop the conduction of electric power to a failed solenoid and shift gears by turning on/off normal solenoids. If all solenoids are malfunctioning, gears will be selected through mechanical hydraulic circuits. |
Shift solenoid valve SLT |
During a shift solenoid valve SLT malfunction, the current to the shift solenoid valve is stopped. However, shifting is performed through normal clutch pressure control. |
Shift solenoid valve SLU |
During a shift solenoid valve SLU malfunction, the current to the shift solenoid valve is stopped. This stops lock-up control, thus decreasing fuel economy. |
Gear Position |
1st |
2nd |
3rd |
4th |
5th |
6th |
---|---|---|---|---|---|---|
Shift solenoid valve SL1 |
ON |
ON |
ON |
ON |
OFF |
OFF |
Shift solenoid valve SL2 |
OFF |
OFF |
OFF |
ON |
ON |
ON |
Shift solenoid valve SL3 |
OFF |
ON |
OFF |
OFF |
OFF |
ON |
Shift solenoid valve SL4 |
OFF |
OFF |
ON |
OFF |
ON |
OFF |
Gear Position under Normal Conditions |
1st |
2nd |
3rd |
4th |
5th |
6th |
|
---|---|---|---|---|---|---|---|
Shift solenoid valve SL1 |
ON Malfunction (without Fail-safe Control)* |
1st |
2nd |
3rd |
4th |
4th |
4th |
OFF Malfunction (without Fail-safe Control) |
1st to N |
2nd to N |
3rd to N |
4th to N |
5th |
6th |
|
Fail-safe Control during OFF Malfunction |
Fixed in 3rd or 5th |
||||||
Shift solenoid valve SL2 |
ON Malfunction (without Fail-safe Control)* |
1st to 4th |
2nd to 4th |
3rd to 4th |
4th |
5th |
6th |
OFF Malfunction (without Fail-safe Control) |
1st |
2nd |
3rd |
4th to 1st |
5th to N |
6th to N |
|
Fail-safe Control during OFF Malfunction |
Fixed in 2nd or 3rd |
||||||
Shift solenoid valve SL3 |
ON Malfunction (without Fail-safe Control)* |
1st to 2nd |
2nd |
3rd |
4th |
5th |
6th |
OFF Malfunction (without Fail-safe Control) |
1st |
2nd to 1st |
3rd |
4th |
5th |
6th to N |
|
Fail-safe Control during OFF Malfunction |
Fixed in 3rd |
||||||
Shift solenoid valve SL4 |
ON Malfunction (without Fail-safe Control)* |
3rd |
3rd |
3rd |
4th |
5th |
5th |
OFF Malfunction (without Fail-safe Control) |
1st |
2nd |
3rd to 1st |
4th |
5th to N |
6th |
|
Fail-safe Control during OFF Malfunction |
Fixed in 2nd |
Fail-safe Chart
FAIL-SAFE CHART
HINT:
If any of the following auto cancel conditions are detected while the dynamic
radar cruise control system is controlling vehicle speed, the system clears the
stored vehicle speed and cancels control of vehicle speed by the dynamic radar cruise
control system.
Automatic ...
Master Cylinder Pressure Sensor Zero Point High Malfunction (C1422,C1456)
DESCRIPTION
Refer to DTCs C1421, C1423, C1424, C1455, C1457 and C1458 (See page
).
DTC Code
DTC Detection Condition
Trouble Area
C1422
When the stop light switch is off, the PM/C1 terminal voltage is 0.86
V or higher for 5 seconds ...
Automatic Disconnecting Differential Motor Control Circuit Open (P17A0)
DESCRIPTION
This DTC is output when an open circuit in the A.D.D. shift motor drive circuit
is detected.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
P17A0
Automatic Disconnecting Differential Motor Control Ci ...