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DTC U0155: Lost Communication With Gauge Control Module (VSP/NE Frame)

WARNING: This page is about a different car, the 2012 Honda Accord, 2011 Honda Accord, 2010 Honda Accord, 2009 Honda Accord, and 2008 Honda Accord. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
  1. Clear the DTCs with the HDS.
  2. Turn the ignition switch to LOCK (0) and then back to ON (II).
  3. Wait for at least 6 seconds.
  4. Check for DTCs with the HDS.

    Is DTC U0155 indicated? 

    YES  -Go to step 5.

    NO  -Intermittent failure, the system is OK at this time. Check for loose or poor connections between the power seat control unit and the gauge control module. ■

  5. From the BODY ELECTRICAL SYSTEM SELECT menu, select B-CAN CONTROL UNITS INFORMATION, and then select CHECK CONNECTED CONTROL UNITS.

    Is the gauge control module detected? 

    YES  -Go to step  10

    NO  -Go to step 6.

  6. Measure the voltage between body ground and gauge control module 32P connector terminals No. 16 and No. 32 individually.
    Fig 1: Body Ground And Gauge Control Module 32P Connector Terminals No. 16 And No. 32
    G00521832Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is the gauge control module detected? 

    YES  -Go to step 9

    NO  -Go to step 7.

  7. Turn the ignition switch to LOCK (0)
  8. Check the No. 15 (10 A) fuse in the under-hood fuse/relay box and the No. 5 (7.5 A) fuse in the driver's under-dash fuse relay box.

    Are the fuses OK? 

    YES  -Repair an open or high resistance in the No. 15 (10A) and/or No. 5 (7.5 A) fuse circuit.

    NO  -Replace the fuses. If the fuse blows again, repair a short to ground on the No. 15 (10 A) and/or No. 5 (7.5 A) fuse circuit.

  9. Measure the voltage between body ground and gauge control module 32P connector terminals No. 13 and No. 17 individually.
    Fig 2: Body Ground And Gauge Control Module 32P Connector Terminals No. 13 And No. 17
    G00521833Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there less than 0.2V? 

    YES  -Go to step 10

    NO  -Repair an open or high resistance in the ground wires or poor ground (G501) and /or (G502).

  10. Turn the ignition switch to LOCK (0).
  11. Disconnect power seat control unit connector B (40P).
  12. Disconnect the gauge control module 32P connector.
  13. Check for continuity between power seat control unit connector B (40P) terminals No. 39 and No. 40 and gauge control module 32P connector terminals No. 18 and No. 19 respectively.
    Fig 3: Checking Continuity Between Power Seat Control Unit Connector B (40P) Terminals No. 39, 40 And Gauge Control Module 32P Connector Terminals No. 18, 19
    G00521834Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ). ■

    NO  -An open or poor connection in the wire between the gauge control module and the power seat control unit. ■

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