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Gauge Control Module Input Test

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 driver's dashboard undercover (see DRIVER'S POCKET REMOVAL/INSTALLATION ), then remove the dashboard lower cover (see DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION )
  3. 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 Terminals
    G05995100Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. 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 5
  5. With the connector still disconnected, do these input tests at the following 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 6
    TROUBLESHOOT REFERENCE CHART

    Cavity Wire Test condition Test Desired result Possible cause if desired result is not obtained
    3 ORN Combination light switch ON Attach to ground The dash lights, audio unit light, and climate control unit light, moonroof switch light, and seat heater switch lights should come on full bright
    • Faulty LEDs and bulbs
    • An open 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 in the wire
    5 BLU Ignition switch ON (II), turn signal switch m 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 in the wire
    23 BLU Disconnect driver's under-dash fuse/relay box connector P (20P) Check for continuity between the No 23 terminal and driver's under-dash fuse/relay box connector P (20P) terminal No 5 There should be continuity An open in the wire
    Check for continuity to ground There should be no continuity A short to ground in the wire
    24 PNK Disconnect driver's under-dash fuse/relay box connector P (20P) Check for continuity between the No 24 terminal and driver's under-dash fuse/relay box connector P (20P) terminal No 6 There should be continuity An open in the wire
    Check for continuity to ground There should be no continuity A short to ground in the wire
  6. Reconnect the 32P connector to the gauge control module, and do these input tests at the following 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 (see GAUGE CONTROL MODULE REPLACEMENT )
    TROUBLESHOOT REFERENCE 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 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 in the wire
    17 BRN Under all conditions Measure the voltage to ground There should be less than 0 5V
    • Poor ground (G501)
    • An open in the wire
    1 BLK Under all conditions Measure the voltage to ground There should be less than 0 5V
    • Poor ground(G502)
    • An open in the 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 more than 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 1 V
    • Poor ground (G201)
    • Faulty washer fluid level switch
    • An open 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 more than 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 1 V
    • Poor ground(G302)
    • Faulty brake fluid level switch
    • An open in the wire
    31 LT GRN Ignition switch ON (II), parking brake lever pulled Measure the voltage to ground There should be less than 1 V
    • Faulty parking brake switch
    • An open in the wire
    Ignition switch ON (II), parking brake lever released Measure the voltage to ground There should be more than 5 V
    • Faulty parking brake switch
    • A short to ground in the wire
    (1) Canada models
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