P1529

DTC P1529 TCM Request for MIL ON

DESCRIPTION

A communication line exists between the Engine Control Module (ECM) and the Transaxle Control Module (TCM). The sole purpose of this communication line is for the TCM to notify the ECM to activate the Malfunction Indicator Lamp (MIL) when a serious transaxle failure has occurred.

Detecting Condition & Limp Home:

DTC DETECTING CONDITION

1. DTC Description
The ECM illuminates the MIL and sets DTC P1529 if TCM requests "MIL ON" via CAN. This error code determines diagnostic failure at TCM side.

2. Conditions for Setting the DTC

INSPECTION PROCEDURE
- This is only a request from the TCM to turn the MIL ON. The fault code is stored in the TCM. The freeze frame data is stored in the ECM under the P1529 request code. Be sure to retrieve the freeze frame data before clearing code P1529 from the ECM.
- Check the transaxle system.