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Master Switch Input Test

NOTE: The power window control unit is built into the power window master switch, and it only controls the driver's window operations.
  1. Remove the switch panel from the door panel (see step 12 on FRONT DOOR OUTER HANDLE REPLACEMENT ).
  2. Disconnect the 20P connector (A) from the master switch (B).
    Fig 1: Disconnecting 20P Connector From Master Switch
    G03676480Courtesy 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 20P connector to the switch, and perform 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.
      INPUT TEST - 20P CONNECTOR RECONNECTED

      Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
      4 BLK Ignition switch ON (II), and the master switch ON. Check for voltage to ground: There should be less than 1 V.
      • Poor ground (G501)
      • An open in the wire
      8
      14 GRN/WHT Ignition switch ON (II) Check for voltage to ground: There should be battery voltage.
      • Blown No. 23, 22, 24 or 25 (20 A) fuse in the under-dash fuse/relay box
      • Faulty power window relay
      • An open in the wire
      2 GRN/BLK
      18 YEL/RED
      11 YEL/BLU
      5 YEL/GRN Ignition switch ON (II) Check for voltage to ground: There should be battery voltage.
      • Blown No. 6 (7.5 A) fuse in the under-dash fuse/relay box
      • An open in the wire
      16 RED/WHT Ignition switch ON (II) Check for voltage to ground: There should be battery voltage.
      • Faulty power window master switch
      • Short to ground in the wire
      9 LT GRN Under all conditions Check for voltage to ground: There should be less than 1 V. An open in the wire
      20 BLU Ignition switch ON (II), and the driver's window switch AUTO DOWN Check for voltage between the No. 20 and No. 4 terminals: There should be 0 V-about 5 V - 0 V-about 5 V repeatedly (a digital voltmeter reads about 2.5 V while the window moves).
      • Blown No. 6 (7.5 A) fuse in the under-dash fuse/relay box
      • Blown No. 23 (20 A) fuse in the under-dash fuse/relay box
      • Faulty power window relay
      • Faulty power window master switch
      • Short to ground in the wire
      13 ORN Ignition switch ON (II), and the driver's window switch AUTO DOWN Check for voltage between the No. 13 and No. 4 terminals: There should be 0 V-about 5 V - 0 V-about 5 V repeatedly (a digital voltmeter reads about 2.5 V while the window moves).
  5. Disconnect the 20P connector from the switch connector, 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 control unit must be faulty; replace the power window master switch.
      INPUT TEST - 20P CONNECTOR DISCONNECTED

      Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
      6 RED/YEL Connect the No. 14 and No. 6 terminals, and the No. 7 and No. 4 terminals, then turn the ignition switch ON (II) Check for driver's window motor operation: It should run (the driver's window moves down).
      • Faulty driver's window motor
      • An open in the wire
      7 RED/BLK
      1 BLU/RED Connect the No. 2 and No. 3 terminals, and the No. 1 and No. 8 terminals, then turn the ignition switch ON (II) Check for front passenger's window motor operation: It should run (the front passenger's window moves down).
      • Faulty front passenger's window motor
      • Faulty front passenger's window switch
      • An open in the wire
      3 BLU/WHT
      19 BLU/BLK Connect the No. 18 and No. 17 terminals, and the No. 19 and No. 8 terminals, then turn the ignition switch ON (II) Check for left rear window motor operation: It should run (the left rear window moves down).
      • Faulty left rear window motor
      • Faulty left rear window switch
      • An open in the wire
      17 BRN
      12 BLU/ORN Connect the No. 11 and No. 10 terminals, and the No. 12 and No. 8 terminals, then turn the ignition switch ON (II) Check for right rear window motor operation:It should run (the right rear window moves down).
      • Faulty right rear window motor
      • Faulty right rear window switch
      • An open in the wire
      10 BLU/YEL
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