DTC Advanced Diagnostics: P150A
DTC P150A:Engine Mount Control Unit Internal Circuit Malfunction 1

General Description

The engine mount control system controls the engine mounts electronically. The system consists of the engine mount actuators, the engine mount control unit, and the powertrain control module (PCM). The engine mount control unit uses the crankshaft and camshaft position sensor outputs (received from the PCM) to estimate engine vibration. The engine mount control unit then sends signals to the engine mount actuators to command the engine mounts to push and pull on the engine to counteract engine vibration. The engine mount control unit monitors the voltage control circuit in the PCM which boosts up the voltage to drive the engine mount actuators. If the boost voltage control circuit voltage is less than set value, the engine mount control unit detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status
Execution
Continuous
Sequence
None
Duration
20 seconds or more
DTC Type
One drive cycle, MIL off
OBD Status
N/A

Enable Conditions
Condition
 
Engine start/stop button
ON mode
No active DTCs set (prevents monitor from running)
P0A14, P0A15, P0AB6, P0AB7, P150B, P150C, P150D, P150E, P15AB, P15B0, P15BE, P15BF, P15C0, P16C4, P16C5, P16C6

Malfunction Threshold
The engine mount voltage control circuit voltage is less than 4.3 V for at least 20 seconds.

Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
Engine mount control unit internal circuit failure

Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory. The MIL does not come on.

Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.