Monitor Description

for Manual Transmission 

• The ECM detects the shift change status from the neutral position switch signal, and detects the current selected gear from the engine speed and vehicle speed. If the neutral position switch signal and the shift change status cannot be coordinated, the ECM interprets this as a malfunction, illuminates the MIL, and stores the DTC.

for Automatic Transmission 

• If the ECM cannot coordinate the N, P or neutral information from the park/neutral position switch signal with the shift information sent from the TCM through CAN communication, then the ECM interprets this as a malfunction, illuminates the MIL, and stores the DTC.