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Gauge Control Module Input Test

  1. Remove the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).
  2. Disconnect connector A (30P) from the gauge control module.
  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 look OK, go to step 4.
      Fig 1: Identifying Gauge Control Module 30P Connector
      G05526545Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Reconnect connector A to the gauge control module, and make these input tests at the connector.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, replace the gauge control module.
    WIRE AND TEST CONDITION CHART

    Cavity Wire Test Condition Test: Desired result Possible cause if desired result is not obtained
    A6 WHT/RED Under all conditions Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 7 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • An open in the wire
    A5 YEL Ignition Switch ON (II) Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 21 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • An open in the wire
    A20 BLK Under all conditions Measure the voltage to ground:
    There should be less than 0.5 V.
    • Poor ground (G502)
    • An open in the wire
    A21
    A25 BRN/YEL Disconnect driver's under-dash fuse/relay box N (45P) and gauge control module A (30P) connectors Check for continuity between the A25 terminal and the driver's under-dash fuse/relay box connector N (45P) No. 28 terminal:
    There should be continuity.    		 An open in the wire
    Check for continuity between the A25 terminal and body ground:
    There should be no continuity.    		 A short to ground in the wire
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