P1693
P1693
DESCRIPTION
The Malfunction Indicator Lamp (MIL) request signal wire is used by the Transaxle Control Module (TCM) to signal the ECM to set transaxle related codes.
FAILURE CONDITIONS
The ECM will set a code and the MIL will turn on if the available voltage present is greater than 120% of battery voltage during two driving cycles. This check is made once per trip when DLC terminal 15 ("L" data line) is "ON" and the engine speed is less than 800 RPM. This code indicates that higher than expected voltage is being read at the request wire by the ECM.
Circuit Diagram:
Test Procedure:
