DTC P1429 (38): Motor Drive Module (MDM) Overheating Signal Circuit Problem: General Description

If the flag over temperature (FOT) signals from the power drive unit (PDU) do not vary from the low voltage level to the high voltage level within a set time after turning the ignition switch on, a malfunction is detected. The signals vary from a low voltage level to a high voltage level within a set time (t0) under normal conditions. If a problem occurs in the signal circuit, the signal stays at a low voltage level for a set time (t1) (t1>t0) after turning the ignition switch on, and the motor control module (MCM) detects a malfunction and stores a DTC.