P16C6

DTC P16C6: Engine Mount Actuator High Voltage During Function Test

NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
- If DTC P0A14, P0A16, P0AB6, P0AB8, P16C7, or P16C8 are stored at the same time as DTC P16C6, troubleshoot those DTCs first, then recheck for P16C6.
- Information marked with an asterisk (*) applies to the rear active control engine mount (ACM) actuator.

1. Turn the ignition switch ON (II).
2. Clear the DTCs with the HDS.
3. Do the ACM ACTIVATION with VTEC in the INSPECTION MENU with the HDS.
4. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P16C6 indicated?

YES - Go to step 5.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the engine mount control unit and the active control engine mount (ACM) actuator.

5. Turn the ignition switch OFF.
6. Disconnect the active control engine mount (ACM) actuator 2P connector.
7. Disconnect the engine mount control unit 20P connector.
8. Turn the ignition switch ON (II).




9. Measure voltage between body ground and the appropriate PCM connector terminal (see table).

Is there battery voltage?

YES - Repair short to power in the wire between the engine mount control unit and the active control engine mount (ACM) actuator, then go to step 13.

NO - Go to step 10.

10. Turn the ignition switch OFF.




11. Check for continuity between engine mount control unit 20P connector terminals No. 9 (No. 1)* and No. 20 (No. 10)*.

Is there continuity?

YES - Repair short in the wire between the engine mount control unit No. 9 and No. 20 terminals (No. 1 and No. 10 terminals)*, then go to step 14.

NO - Go to step 12.




12. Check the resistance between active control engine mount (ACM) actuator 2P connector terminals No.1 and No. 2.

Is there about 0.75-1.15 Ohms?

YES - Replace the engine mount control unit, then go to step 14.

NO - Replace the front engine mount and rear engine mount, then go to step 14.

13. Turn the ignition switch OFF.
14. Reconnect all connectors.
15. Turn the ignition switch ON (II).
16. Reset the PCM with the HDS.
17. Do the PCM idle learn procedure. Programming and Relearning
18. Do the ACM ACTIVATION with VTEC in the INSPECTION MENU with the HDS.
19. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P16C6 indicated, check for poor connections or loose terminals at the engine mount control unit and the active control engine mount (ACM) actuator, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - Troubleshooting is complete.