Fail-Safe Chart

AA80F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: FAIL-SAFE CHART

1. Description

The fail-safe function minimizes the loss of the ECT functions when a malfunction occurs in a sensor or solenoid.

2. Fail-safe

(a) Fail-safe control list:

HINT
*: In addition to the switching of the shift pattern through the pattern select switch, Artificial Intelligence Shift (AI-SHIFT) control enables the TCM to estimate the road conditions and the intention of the driver in order to automatically select the optimal shift pattern.

(b) Shift Solenoid Valve Normal Operation Chart:

HINT
* *1: Canceled at first vehicle stop.
* *2: Not canceled at next vehicle stop.
* *3: Fail-safe operation is canceled when each trip is started.
* *4: Not canceled, as vehicle stop was detected during previous trip.
* *5: For the shift solenoid valve SL1 OFF malfunction, the 3rd trip is started with the fail-safe on.
* Fail-safe operation is performed when the TCM detects a malfunction.

HINT
* *1: When vehicle is driven after fail-safe detection.
* *2: After trip is started in malfunctioning state.
* In case of an open or short circuit, the TCM stops sending current to the open or short-circuited solenoid.