DTC P0A14-12: Engine Mount "A" Control Circuit High Circuit Short to Battery [11/2021 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 350, 2024 Lexus NX 350, 2023 Lexus NX 350, and 2022 Lexus NX 350. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM)
- Inspect the vacuum switching valve (for active control engine mount system).
Refer to INSPECTION [11/2021 - ]
Result
Proceed to OK NG
Result:
NG
REPLACE VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM). Refer to REMOVAL [11/2021 - ]
Result:
OK
See step 2
- Inspect the vacuum switching valve (for active control engine mount system).
- CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM) - ECM)
- Disconnect the 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 B13-2 (ACM) or B51-14 (ACM) - Other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [11/2021 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR