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Gauge Control Module Input Test

  1. Remove the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).
  2. Disconnect the 18P connector 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 Connector B (18) Terminals
      G05492798Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Reconnect the connector 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, go to step 5.
      INPUT TEST CONDITION REFERENCE CHART

      Cavity Wire Test Condition Test: Desired result Possible cause if desired result is not obtained
      B10 YEL Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage
      • Blown No. 21 (7.5 A) fuse in the under-dash fuse/relay box
      • An open in the wire
      B1 WHT/RED(1) RED(2) Under all conditions Measure the voltage to ground: There should be battery voltage
      • Blown No. 7 (10 A) fuse in the under-dash fuse/relay box
      • An open in the wire
      B18 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.
      • Poor ground (G503)
      • An open in the wire
      (1) '04-05 models
      (2) '06-08 models
  5. Disconnect the 18P connector from 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, the gauge control module must be faulty, replace it.
      INPUT TEST CONDITION REFERENCE CHART

      Cavity Wire Test Condition Test: Desired result Possible cause if desired result is not obtained
      B14 BRN/YEL(1) BRN(2) Under-dash fuse/relay box connector N (45P) disconnected Check for continuity between the No. 14 terminal and under-dash fuse/relay box N (45P) connector No. 28 terminal: There should be continuity An open in the wire
      Check for continuity to ground: There should be no continuity Short to ground on the wire
      (1) '04-05 models
      (2) '06-08 models
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