Fail Safe Mode

The A/T control unit has an electronic fail-safe (limp home mode). This allows the vehicle to be driven even if a major electrical input/output device circuit is damaged.

Under Fail-Safe, the vehicle always runs in third gear even with a shift lever position of "1", "2" or "D". Vehicle operator may complain of "sluggish or poor acceleration".

When the Fail-Safe operation occurs the next time the key is turned to the "ON" position, the O/D OFF indicator lamp will blink for about 8 seconds. Fail-Safe may activate without electrical circuit damages if the vehicle is driven under extreme conditions (such as excessive wheel spins and emergency braking immediately afterwards). In this case, turn the ignition key "OFF" for 5 seconds and then "ON" to recover normal shift pattern.
The blinking of the O/D OFF indicator lamp for about 8 seconds will appear only once and be cleared. The vehicle operator may resume normal driving conditions by chance.
Always follow the proper work flow.
The self-diagnosis results will be as follows:
^ The first self-diagnosis will indicate the damage of the vehicle speed sensor or the revolution sensor.
^ During the next self-diagnosis performed after checking the sensor, no damages will be indicated.