2002 Honda Insight StandardFACTORY OEM SERVICE PROCEDURE

Door Multiplex Control Unit Input Test

WARNING: This page is about a different car, the 2006 Honda Odyssey and 2005 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Make sure the ignition switch is OFF before disconnecting the driver's door switch panel.
  1. Remove the driver's door switch panel (see MASTER SWITCH REPLACEMENT ).
  2. Disconnect the 23P connector from the power window master switch.
    Fig 1: Disconnecting 23P Connector From Power Window Master Switch
    G03706626Courtesy 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 look OK, go to step 4.
  4. Reconnect the connector to the door multiplex control unit and make these input tests at the connector.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, the door multiplex control unit must be faulty, replace the power window master switch.
    POSSIBLE CAUSE

    Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
    15 WHT/RED Under all conditions Check for voltage to ground: There should be battery voltage.
    • Blown No. 7 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • An open in the wire
    20 YEL Ignition switch ON (II) Check for voltage to ground: There should be battery voltage.
    • Blown No. 21 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • An open in the wire
    1 BLK Under all conditions Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G601)
    • An open in the wire
    16 GRN/RED Under all conditions Check for continuity between No. 16 terminal and the driver's under-dash fuse/relay box connector J (21P) No. 4 terminal:
    There should be continuity.    		 An open in the wire
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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