DTC 86-14: F-CAN Communication With Gauge Control Module Malfunction

• 1. Turn the ignition switch to ON (II).
• 2. Clear the DTC with the HDS.
• 3. Turn the ignition switch to LOCK (0).
• 4. Start the engine for at least 5 seconds.
• 5. Check for DTCs with the HDS.

  DTC Description	DTC	Freeze Frame
  86-11 F-CAN Bus-Off Malfunction
  86-14 F-CAN Communication With Gauge Control Module Malfunction

Is DTC 86-14 indicated? 

YES  : If DTC 86-14 is only indicated, go to step 2.

YES  : If DTC 86-11 is also indicated, go to DTC 86-11 .

NO  : Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.

• 1. Check for gauge control module DTCs with the HDS.

  DTC Description	DTC

Are any DTCs indicated? 

YES  : Go to indicated DTC's troubleshooting.

NO  : Go to step 3.

• 1. Turn the ignition switch to LOCK (0).
• 2. Disconnect the following connectors.

  VSA modulator-control unit 38P connector

  Gauge control module 32P connector

• 3. Check for continuity between test points 1 and 2.

  Test condition IG LOCK (0)

  VSA modulator-control unit 38P connector: disconnected

  Gauge control module 32P connector: disconnected

  Test circuit F CAN-L

  Test point 1 VSA modulator-control unit 38P connector No. 26 (RED)

  Test point 2 Gauge control module 32P connector No. 20 (RED)

  Test circuit F CAN-H

  Test point 1 VSA modulator-control unit 38P connector No. 38 (WHT)

  Test point 2 Gauge control module 32P connector No. 19 (WHT)

  Fig 2: Checking Continuity Between VSA Modulator-Control Unit 38P Connector No. 26 (RED) And Gauge Control Module 32P Connector No. 20 (RED)

  Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity? 

YES  : The F CAN-L, F CAN-H wires are OK. Go to step 4.

NO  : Repair an open in the wire between the gauge control module and the VSA modulator-control unit.

• 1. Substitute a known-good gauge control module  See Rewriting the ODO Data and Transferring the Maintenance Minder™ Data to a New Gauge Control Module or GAUGE CONTROL MODULE REMOVAL AND INSTALLATION .
• 2. Reconnect the following connectors.

  VSA modulator-control unit 38P connector

  Gauge control module 32P connector

• 3. Turn the ignition switch to ON (II).
• 4. Clear the DTC with the HDS.
• 5. Turn the ignition switch to LOCK (0).
• 6. Start the engine for at least 5 seconds.
• 7. Check for DTCs with the HDS.

  DTC Description	DTC	Freeze Frame
  86-14 F-CAN Communication With Gauge Control Module Malfunction

Is DTC 86-14 indicated? 

YES  : Go to step 5.

NO  : Replace the original gauge control module  See Rewriting the ODO Data and Transferring the Maintenance Minder™ Data to a New Gauge Control Module or GAUGE CONTROL MODULE REMOVAL AND INSTALLATION .

• 1. Update the VSA modulator-control unit if it does not have the latest software  See VSA SENSOR NEUTRAL POSITION MEMORIZATION  or VSA MODULATOR-CONTROL UNIT UPDATE  or VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION .
• 2. Turn the ignition switch to LOCK (0).
• 3. Start the engine for at least 5 seconds.
• 4. Check for DTCs with the HDS.

  DTC Description	DTC	Freeze Frame

Is DTC 86-14 indicated? 

YES  : Check for loose terminals in the VSA modulator-control unit 38P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit  See VSA SENSOR NEUTRAL POSITION MEMORIZATION , VSA MODULATOR-CONTROL UNIT UPDATE  or VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION .

NO  : Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.