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Door Multiplex Control Unit Input Test

WARNING: This page is about a different car, the 2012 Honda Accord, 2011 Honda Accord, 2010 Honda Accord, 2009 Honda Accord, and 2008 Honda Accord. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
  1. Turn the ignition switch to LOCK (0).
  2. Open and close the driver's door, then remove the power window master switch.
  3. Disconnect the 37P connector (A) from the power window master switch (B).
    NOTE: The illustration shows 4-door model.
    Fig 1: Identifying Power Window Master Switch 37P Connector Terminals
    G07352496Courtesy 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 look OK, go to step 5.
  5. Reconnect the connector to the power window master switch, 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, go to step 6.
    TEST CONDITION REFERENCE CHART

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    13 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 or high resistance in the wire
    14 LT GRN Ignition switch ON (II) Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • An open or high resistance in the wire
    25 WHT Under all conditions Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 3-4 (DR F/B STD) (60 A) fuse in the under-hood fuse/relay box
    • Blown No. 24 (20 A) fuse in the driver's under-dash fuse/relay box
    • An open or high resistance in the wire
    32 BLK In all ignition switch positions Measure the voltage to ground:
    There should be less than 0.2 V.
    • Poor ground(G501)
    • An open or high resistance in the ground wire
    37 BLK In all ignition switch positions Measure the voltage to ground:
    There should be less than 0.2 V.
    • Poor ground (G502)
    • An open or high resistance in the ground wire
    16 RED Ignition switch ON (II), position 2 switch pressed Measure the voltage to ground:
    There should be less than 0.2 V.
    • Faulty driving position memory switch
    • Poor ground (G501) or an open in the ground wire
    • An open or high resistance in the wire
    Ignition switch ON (II), position 2 switch released Measure the voltage to ground:
    There should be about 5 V.
    • Faulty driving position memory switch
    • A short to ground in the wire
    17 GRY Ignition switch ON (II), position 1 switch pressed Measure the voltage to ground:
    There should be less than 0.2 V.
    • Faulty driving position memory switch
    • Poor ground (G501) or an open in the ground wire
    • An open or high resistance in the wire
    Ignition switch ON (II), position 1 switch released Measure the voltage to ground:
    There should be about 5 V.
    • Faulty driving position memory switch
    • A short to ground in the wire
    19 YEL Ignition switch ON (II), SET switch pressed Measure the voltage to ground:
    There should be less than 0.2 V.
    • Faulty driving position memory switch
    • Poor ground (G501) or an open in the ground wire
    • An open or high resistance in the wire
    Ignition switch ON (II), SET switch released Measure the voltage to ground:
    There should be about 5 V.
    • Faulty driving position memory switch
    • A short to ground in the wire
  6. Turn the ignition switch to LOCK (0).
  7. Disconnect the connector from the power window master switch, and do the following input tests:
NOTE: After replacing the power window master switch, reset the power window control unit (see RESETTING THE POWER WINDOW CONTROL UNIT ).
TEST CONDITION REFERENCE CHART

Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
4 GRN Under all conditions Connect terminals No. 13 and No. 4:
The driving position memory switch indicator 2 should come on.
  • Faulty LED
  • Faulty driving position memory switch
  • Poor ground(G501) or an open in the ground wire
  • An open or high resistance in the wire
6 PUR Under all conditions Connect terminals No. 13 and No. 6:
The driving position memory switch indicator 1 should come on.
  • Faulty LED
  • Faulty driving position memory switch
  • Poor ground(G501)or an open in the ground wire
  • An open or high resistance in the wire
26 PNK Under all conditions Connect terminals No. 13 and No. 26:
The driving position memory switch lights should come on.
  • Faulty LED
  • Faulty driving position memory switch
  • Poor ground(G501) or an open in the ground wire
  • An open or high resistance in the wire
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