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Passenger's Unit

WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the passenger's multiplex control unit from the passenger's under-dash fuse/relay box.
  2. 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 3.
      Fig 1: Inspecting Connector And Socket Terminals
      G03642326Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Make the following input tests at the 22P connector B and the passenger's under-dash fuse/relay box socket connector A.

    Be careful not to spread the fuse box connectors.

    • 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 1 in DOOR UNIT  .
    MULTIPLEX CONTROL UNIT INPUT TEST (PASSENGER'S UNIT)

    Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
    B22 BLK Under all conditions Check for continuity to ground:
    There should be continuity.
    • Poor ground (G503)
    • An open in the wire
    A24 Fuse/relay box socket Under all conditions Check for voltage to ground:
    There should be battery voltage.
    • Blown No. 13 (7.5 A) fuse in the passenger's under-dash fuse/relay box
    • Blown No. 54 (40 A) fuse in the under-hood fuse/relay box
    • Faulty passenger's under-dash fuse/relay box
    A8 Under all conditions Check for continuity to ground:
    There should be continuity.
    • Poor ground (G651)
    • An open in the wire
    A22 Ignition switch ON (II) Check for voltage to ground:
    There should be battery voltage.
    • Blown No. 9 (10 A) fuse in the driver's under-dash fuse/relay box
    • An open in the wire
    A12 Under all conditions Attach A12 to battery voltage:
    Power window relay should click.
    Check voltage between No. 7 (20 A) passenger's fuse and ground:
    There should be battery voltage.
    • Poor ground (G651)
    • Faulty passenger's fuse box
    • Faulty power window relay
    • An open in the wire
    • Blown No. 51 (40 A) fuse in the under-hood fuse/relay box
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