Fail-Safe Chart
- Fail-safe
This function minimizes the loss of operation when any abnormality occurs in a sensor or solenoid.
Fail-safe Control List
FAIL-SAFE CONTROL LISTMalfunction Part Function Input Turbine Speed Sensor Shifting to only either the 1st or 3rd gear is allowed. Counter Gear Speed Sensor - The counter gear speed is determined based on the signals from the skid control ECU (speed sensor signals).
- Shifting between 1st to 4th gears is allowed.
ATF Temp. Sensor Shifting between 1st to 4th gears is allowed. ECT ECU Power Supply (Voltage is Low) When the vehicle is being driven in 6th gear, the transaxle is fixed in 6th gear. When being driven in any of the 1st to 5th gears, the transaxle is fixed in 5th gear. CAN Communication Shifting to only either 1st or 3rd gear is allowed. Knock Sensor Shifting between 1st to 4th gear is allowed. Solenoid Valve SL1, SL2, SL3 and SL4 The current to the failed solenoid valve is cut off and operating the other solenoid valves with normal operation performs shift control. (Shift controls in fail-safe mode are described in the table on the next page. For details, refer to FAIL-SAFE CONTROL CHART ) Solenoid Valve Operation when Normal
SOLENOID VALVE OPERATION CHART (WHEN NORMAL)Gear Position 1st 2nd 3rd 4th 5th 6th Solenoid SL1 ON ON ON ON OFF OFF SL2 OFF OFF OFF ON ON ON SL3 OFF ON OFF OFF OFF ON SL4 OFF OFF ON OFF ON OFF Fail-safe Control Chart:
FAIL-SAFE CONTROL CHARTGear Position in Normal Operation 1st 2nd 3rd 4th 5th 6th SL1 ON Malfunction (without Fail-safe Control) (1) 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 Fail-safe Control during OFF Malfunction (ATF Pressure Switches 1 and 2 Malfunctions) Fixed in 3rd or 5th SL2 ON Malfunction (without Fail-safe Control) (1) 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 1st 2nd 3rd 3rd 3rd 3rd Fail-safe Control during OFF Malfunction (ATF Pressure Switches 1 and 2 Malfunctions) Fixed in 2nd or 3rd SL3 ON Malfunction (without Fail-safe Control) (1) 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 1st 3rd 3rd 4th 5th 5th Fail-safe Control during OFF Malfunction (ATF Pressure Switches 1 and 2 Malfunctions) Fixed in 3rd SL4 ON Malfunction (without Fail-safe Control)(1) 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 1st(2) 2nd(2) 4th(2) 4th(2) 6th 6th Fail-safe Control during OFF Malfunction (ATF Pressure Switches 1 and 2 Malfunctions) Fixed in 2nd (1) Fail-safe control is not actuated when the ON malfunction occurs. (2) Shifting to 5th and 6th gears is prohibited.