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Gauge Control Module Input Test

WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Before testing, do the gauge control module self-diagnostic function, and make sure the B-CAN communication line is OK.
  1. Turn the ignition switch to LOCK (0).
  2. Remove the gauge control module (A) (see GAUGE CONTROL MODULE REPLACEMENT  ), and disconnect the 32P connector (B) from it.
    Fig 1: Identifying Gauge Control Module & 32P Connector
    G05960140Courtesy 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 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  5.
    TEST CONDITION REFERENCE TABLE

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    1 RED Combination light switch ON Attach to ground:
    The dash lights should come on full bright.
    • Faulty LEDs and bulbs
    • An open or high resistance in the wire
    6 WHT 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 MICU
    • Faulty combination light switch
    • An open or high resistance in the wire
    9 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 MICU
    • Faulty combination light switch
    • An open or high resistance in the wire
    18 LT GRN Disconnect under-dash fuse/relay box connector Q (16P) Check for continuity between the terminal No. 18 and under-dash fuse/relay box connector Q (16P) terminal No. 3:
    There should be continuity.    		 An open or high resistance in the B-CAN wire
    Disconnect the immobilizer control unit 7P connector Check for continuity to ground: There should be no continuity. An open or high resistance in the B-CAN wire
  5. 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  ).
    TEST CONDITION REFERENCE TABLE

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    16 PNK Under all conditions Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 1 (10 A) fuse in the under-dash fuse/relay box
    • An open or high resistance in the wire
    32 LT BLU Ignition switch ON (II) Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 22 (7.5 A) fuse in the under-dash fuse/relay box
    • Blown No. 60 (50 A) fuse in the under-dash fuse/relay box
    • Faulty ignition switch
    • An open in the wire
    13 BLK In all ignition switch positions Measure the voltage to ground:
    There should be less than 0.2 V.
    • Poor ground (G501) or an open in the ground wire
    • An open or high resistance in the wire
    17 BLK In all ignition switch positions Measure the voltage to ground:
    There should be less than 0.2 V.
    • Poor ground (G501) or an open in the ground wire
    • An open or high resistance in the wire
    25(1) BRN 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 or more.
    • 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.
    • Poor ground (G201) or an open in the ground wire
    • Faulty washer fluid level switch
    • An open or high resistance in the wire
    24 GRY Ignition switch ON (II), brake fluid is full level in the reservoir Measure the voltage to ground:
    There should be about 5 V or more.
    • 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.
    • Poor ground (G401) or an open in the ground wire
    • Faulty brake fluid level switch
    • An open or high resistance in the wire
    23 ORN 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
    • 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 or more.
    • Faulty parking brake switch
    • A short to ground in the wire
    (1) Canada models
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