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Home >> Honda >> 2007 >> Element SC, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 31 (Active Control Engine Mount System) >> DTC Troubleshooting >> DTC P16C5: Engine Mount Actuator Control Power Circuit Stuck ON

DTC P16C5: Engine Mount Actuator Control Power Circuit Stuck ON

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 Honda Crosstour, 2014 Honda Crosstour, 2013 Honda Crosstour, 2012 Honda Crosstour, and 2011 Honda Accord Crosstour. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshots, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION  ).
  1. Turn the ignition switch to ON (II).
  2. Check the ACM UNIT SUPPLY VOLTAGE and ACM RELAY CONTROL in the DATA LIST with the HDS.

    Does the ACM UNIT SUPPLY VOLTAGE indicate battery voltage when the ACM RELAY CONTROL indicates OFF? 

    YES  -Go to step 3.

    NO  -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the engine mount control unit and the driver's under-dash fuse/relay box (active control engine mount (ACM) control relay).

  3. Turn the ignition switch to LOCK (0).
  4. Disconnect driver's under-dash fuse/relay box connector G (13P).
  5. Disconnect engine mount control unit 16P connector.
  6. Check for continuity between engine mount control unit 16P connector terminal No. 16 and body ground.
    Fig 1: Checking Continuity Between Engine Mount Control Unit 16P Connector Terminal No. 16 And Body Ground
    G06418986Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short to ground in the wire between engine mount control unit 16P connector terminal No. 16 and driver's under-dash fuse/relay box connector G terminal No. 7, then go to step  12.

    NO  -Go to step 7.

  7. Turn the ignition switch to ON (II).
  8. Measure the voltage between engine mount control unit 16P connector terminal No. 6 and body ground.
    Fig 2: Measuring Voltage Between Engine Mount Control Unit 16P Connector Terminal No. 6 And Body Ground
    G06418987Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Repair a short to power in the wire between engine mount control unit 16P connector terminal No. 6 and driver's under-dash fuse/relay box connector G terminal No. 4, then go to step  12.

    NO  -Go to step 9.

  9. Turn the ignition switch to LOCK (0).
  10. Reconnect driver's under-dash fuse/relay box connector G (13P).
  11. Measure the voltage between engine mount control unit 16P connector terminal No. 6 and body ground.
    Fig 3: Measuring Voltage Between Engine Mount Control Unit 16P Connector Terminal No. 6 And Body Ground
    G06418988Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Replace the driver's under-dash fuse/relay box; USA models (see USA MODELS ), Canada models (see CANADA MODELS ), then go to next step.

    NO  -Replace the engine mount control unit (see ENGINE MOUNT CONTROL UNIT REPLACEMENT  ), then go to next step.

  12. Reconnect all connectors.
  13. Turn the ignition switch to ON (II).
  14. Clear the DTC with the HDS (see HDS CLEAR COMMAND  ).
  15. Check for Pending or Confirmed DTCs with the HDS.

    Is DTC P16C5 Indicated? 

    YES  -Check for poor connections or loose terminals at the engine mount control unit and the driver's under-dash fuse/relay box (active control engine mount (ACM) control relay), then go to step  1.

    NO  -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

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