Fail-Safe Chart

WARNING: This page is about a different variant/trim than selected.

Fail-safe

This function minimizes the loss of operation when any abnormality occurs in a sensor or solenoid.

FAIL-SAFE CONTROL LIST

Malfunctioning Part	Behavior
Input turbine speed sensor (speed sensor NT)	Shifting to only either 1st or 3rd gear is allowed.
Counter gear speed sensor (speed sensor NC)	The counter gear speed is determined based on the signals from the skid control ECU (speed sensor signals). Shifting from 1st to 4th gear is allowed.
ATF temperature sensor	Shifting from 1st to 4th gear is allowed.
TCM 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 gears from 1st to 5th, the transaxle is fixed in 5th gear.
CAN communication	Shifting to only either 1st or 3rd gear is allowed.
Knock sensor	Shifting from 1st to 4th gear is allowed.
Shift solenoid valve SL1, SL2, SL3 and SL4	The current to the malfunctioning shift solenoid valve is cut off and control is performed by operating the other normal shift solenoid valves. (Shift control in fail-safe mode is described in the table. For details, refer to FAIL-SAFE CONTROL CHART .)

SHIFT SOLENOID VALVE OPERATION WHEN NORMAL

FAIL-SAFE CONTROL CHART

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

HINT:

*: Fail-safe control is not activated when an ON malfunction occurs.