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Gauge Control Module Input Test

WARNING: This page is about a different variant/trim than selected.
NOTE: Before testing, do the gauge control module self-diagnostic function, and make sure the B-CAN communication lines are OK.
  1. Turn the ignition switch to LOCK (0).
  2. Remove the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT  ), and disconnect the 32P connector (A) from it.
    Fig 1: Identifying Gauge Control Module 32P Connector
    G06946794Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Inspect the connector and socket terminals to be sure they are all making good contact.
    • If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
    • If the terminals are OK, go to step  4.
  4. With the connector still disconnected, do the following input tests:
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, go to step  5.
      WIRE TEST CONDITION CHART

      Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
      2 RED Combination light switch ON Connect to ground with a jumper wire: The dashlights should come on full bright.
      • Faulty bulbs
      • An open or high resistance in the wire
      3 ORN Combination light switch ON Connect to ground with a jumper wire: The dashlights should come on full bright.
      • Faulty LEDs
      • An open or high resistance in the wire
      4 GRN Ignition switch ON (II), turn signal switch in RIGHT Measure the voltage to ground:
      There should be battery voltage when the lights are flashing.
      • Faulty driver's MICU
      • Faulty combination light switch
      • An open or high resistance in the wire
      5 BLU Ignition switch ON (II), turn signal switch in LEFT Measure the voltage to ground:
      There should be battery voltage when the lights are flashing.
      • Faulty driver's MICU
      • Faulty combination light switch
      • An open or high resistance in the wire
      23 BLU Disconnect driver's under-dash fuse/relay box connector P (20P) Check for continuity between terminal No. 23 and driver's under-dash fuse/relay box connector P (20P) terminal No. 5:
      There should be continuity.      		 An open in the B-CAN wire
      Check for continuity to ground:
      There should be no continuity.      		 A short to ground in the B-CAN wire
      24 PNK Disconnect driver's under-dash fuse/relay box connector P (20P) Check for continuity between terminal No. 24 and driver's under-dash fuse/relay box connector P (20P) terminal No. 6:
      There should be continuity.      		 An open in the B-CAN wire
      Check for continuity to ground:
      There should be no continuity.      		 A short to ground in the B-CAN wire
  5. Reconnect the 32P connector to the gauge control module, and do the following input tests:
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, the gauge control module must be faulty; replace it (see GAUGE CONTROL MODULE REPLACEMENT  ).
      WIRE TEST CONDITION CHART

      Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
      16 WHT Under all conditions Measure the voltage to ground:
      There should be battery voltage.
      • Blown No. 15 (10 A) fuse in the under-hood fuse/relay box
      • An open or high resistance in the wire
      15 BRN Ignition switch ON (ID Measure the voltage to ground:
      There should be battery voltage.
      • Blown No. 5 (7.5 A) fuse in the driver's under-dash fuse/relay box
      • An open or high resistance in the wire
      17 BRN Under all conditions Measure the voltage to ground:
      There should be less than 0.2 V.
      • Poor ground (G501)
      • An open or high resistance in the ground wire
      1 BLK Under all conditions Measure the voltage to ground:
      There should be less than 0.2 V.
      • Poor ground (G502)
      • An open or high resistance in the ground wire
      28(1) BLU Ignition switch ON (II), washer fluid is half or more in the washer reservoir Measure the voltage to ground:
      There should be about 5 V.
      • Faulty washer fluid level switch
      • A short to ground in the wire
      Ignition switch ON (II), washer fluid is empty in the washer reservoir Measure the voltage to ground:
      There should be less than 0.2 V.
      • Faulty washer fluid level switch
      • Poor ground (G201) or an open in the ground wire
      • An open or high resistance in the wire
      32 GRN Ignition switch ON (II), brake fluid is full level in the reservoir Measure the voltage to ground:
      There should be about 5 V.
      • Faulty brake fluid level switch
      • A short to ground in the wire
      Ignition switch ON (II), brake fluid is lower level in the reservoir Measure the voltage to ground:
      There should be less than 0.2 V.
      • Faulty brake fluid level switch
      • Poor ground (G302) or an open in the ground wire
      • An open or high resistance in the wire
      31 LT GRN Ignition switch ON (II), parking brake lever pulled Measure the voltage to ground:
      There should be less than 0.2 V.
      • Faulty parking brake switch
      • Faulty parking brake switch ground
      • An open or high resistance in the wire
      Ignition switch ON (II), parking brake lever released Measure the voltage to ground:
      There should be about 5 V.
      • Faulty parking brake switch
      • A short to ground in the wire
      (1) Canada models
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