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2012 Buick Verano

Gauge Control Module Input Test

2012 Buick VeranoSECTION Gauge Control Module Input Test
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. 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 And 32P Connector
    G06431717Courtesy 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 the following input tests:
    • 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.
    WIRE SPECIFICATIONS

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    6 WHT Combination light switch ON Connect a jumper wire to ground: The A/T gear position indicator panel light, hazard warning switch light, power mirror switch light, audio unit light, audio-navigation unit light (if equipped), and VSA OFF switch light should come on full bright.
    • Faulty bulbs
    • An open or high resistance in the wire
    • Open or high resistance to ground (G501) to terminal No. 5
    7 BLU Combination light switch ON Connect a jumper wire to ground: The passenger's airbag cutoff indicator, steering wheel switches light, and climate control unit light should come on full bright.
    • Faulty LEDs
    • An open or high resistance in the wire
    • Open or high resistance to ground (G501) to terminal No. 5
    13 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
    14 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 in the wire
    17 GRN Disconnect under-dash fuse/relay box connector Q (16P) Check for continuity between terminal No. 17 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 the following input tests:
    • 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  ).
    WIRE SPECIFICATIONS

    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 (15 A) fuse in the under-dash fuse/relay box
    • An open or high resistance in the wire
    15 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 or high resistance in the wire
    1 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
    5 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
    4(1) LT BLU Ignition switch ON (II), washer fluid is half or more in the washer reservoir Measure the voltage to ground: There should be at least 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 0.2 V.
    • Poor ground (G202) or an open in the ground wire
    • Faulty washer fluid level switch
    • An open or high resistance in the wire
    23 GRY Ignition switch ON (II), brake fluid is full level in the reservoir Measure the voltage to ground: There should be at least 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 0.2 V.
    • Poor ground (G403) or an open in the ground wire
    • Faulty brake fluid level switch
    • An open or high resistance in the wire
    22 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 at least 5 V.
    • Faulty parking brake switch
    • A short to ground in the wire
    31 PUR ECON button pushed Measure the voltage to ground: There should be less than 0.2 V.
    • Poor ground (G501) or an open in the ground wire
    • Faulty ECON switch
    • An open or high resistance in the wire
    ECON button released Measure the voltage to ground: There should be at least 5 V.
    • Faulty ECON switch
    • A short to ground in the wire
    (1) Canada models
RENDER: 1.0x

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