DTC P0A14-12: Engine Mount "A" Control Circuit High Circuit Short to Battery [10/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Toyota Highlander, 2024 Toyota Highlander, and 2023 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT NO. 1 VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM)
- Inspect the No. 1 vacuum switching valve (for active control engine mount system).
Refer to INSPECTION [10/2022 - ]
Result
Proceed to OK NG
Result:
NG
REPLACE NO. 1 VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM). Refer to REMOVAL [10/2022 - ]
Result:
OK
See step 2
- Inspect the No. 1 vacuum switching valve (for active control engine mount system).
- CHECK HARNESS AND CONNECTOR (NO. 1 VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM) - ECM)
- Disconnect the No. 1 vacuum switching valve (for active control engine mount system) connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition C12-2 (ACM) or C89-14 (ACM) - Other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [10/2022 - 11/2023] , or refer to REMOVAL [11/2023 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR