For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category |
DTC Descriptor
DTC P0A14 00: Engine Control Mount CircuitDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
B+ | P0A14 00 | P0A14 00 | -- | -- |
Engine Mount Solenoid Control | -- | P0A14 00 | -- | -- |
Circuit/System Description
B+ is supplied to the engine mount solenoid. When in drive the electronic brake control module (EBCM) monitors engine RPM on the serial data circuit and activates the engine mount vacuum solenoid when engine speed is below 1200 RPM to reduce engine vibration.
Conditions for Running the DTC
Engine running.
Conditions for Setting the DTC
| • | Short to ground or an open/high resistance on the B+ circuit. |
| • | Open/high resistance on the control circuit. |
| • | Calibration is not programmed in the EBCM |
Action Taken When the DTC Sets
Deactivates the engine mount vacuum tank solenoid
Conditions for Clearing the DTC
When the conditions for setting the DTC is no longer present.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Vacuum Operated Engine Mounts Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the engine mount vacuum tank solenoid.
- Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 2 and ground.
- Connect a test lamp between the control circuit terminal 1 and the B+ circuit terminal 2.
- In Drive, verify that a test lamp turns OFF when the engine speed is above 1200 RPM.
- If all circuits test normal, test or replace the engine mount vacuum tank solenoid.
| ⇒ | If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test or replace the engine mount vacuum tank solenoid. |
| ⇒ | If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the EBCM. |
Component Testing
- Ignition OFF, disconnect the harness connector at the engine mount vacuum tank solenoid.
- Test for 25-34 ohms between the control terminal 1 and the ignition terminal 2.
| ⇒ | If not within the specified range, replace the engine mount vacuum tank solenoid. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for EBCM replacement, setup, and programming |
