Fail-Safe Chart

AA80E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: FAIL-SAFE CHART

FAIL-SAFE CHART

1. Description
This function minimizes the loss of the ECT functions when a malfunction occurs in each 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 driver's intention 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 at 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.