Gauge Control Module Input Test

2002 Honda Civic SiSECTION Gauge Control Module Input Test
WARNING: This page is about a different car, the 2006 Honda Odyssey and 2005 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
  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: Inspecting Gauge Control Module Connector A (30P) And Socket Terminals
    G03706625Courtesy 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.
    POSSIBLE CAUSE

    Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
    A6 WHT/RED Under all conditions Check for 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) Check for 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 Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G502)
    • An open in the wire
    A20
    A25 BRN/YEL Under all conditions 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
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.