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Power Window Master Switch Input Test

NOTE: The power window control unit is built into the power window master switch.
  1. Remove the power window master switch (A) (see POWER WINDOW SWITCH REPLACEMENT  ).
    Fig 1: Identifying Power Window Master Switch Connector End View
    G08061300Courtesy of AMERICAN HONDA MOTOR CO., INC.
  2. Reconnect the driver's door wire harness (B) to the driver's door subharness (C).
  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, make the following input tests at the connector.
      • If a test indicates a problem, find and correct the cause, then recheck the system.
      • If all the input tests prove OK, the power window master switch must be faulty; replace it (see POWER WINDOW SWITCH REPLACEMENT  ).
  4. With the power window master switch 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.
    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    20 RED Momentarily connect terminals No. 20 and No. 15, and terminals No. 21 and No. 22 with jumper wires Check driver's power window motor operation:
    The window should go down.
    • Blown No. 26 (20 A) fuse in the under-dash fuse/relay box
    • Faulty driver's power window motor
    • An open or high resistance in the wire
    • Poor ground (G501) or an open in the ground wire
    21 LT BLU Momentarily connect terminals No. 21 and No. 15, and terminals No. 20 and No. 22 with jumper wires Check driver's power window motor operation:
    The window should go up.
    2 PUR Under all conditions Check for continuity between terminal No. 2 and front passenger's power window switch 14P connector terminal No. 3:
    There should be continuity.    		 An open or high resistance in the wire
    13 ORN Under all conditions Check for continuity between terminal No. 13 and left rear power window switch 14P connector terminal No. 3:
    There should be continuity.    		 An open or high resistance in the wire
    12 GRN Under all conditions Check for continuity between terminal No. 12 and right rear power window switch 14P connector terminal No. 3:
    There should be continuity.    		 An open or high resistance in the wire
    8 BRN Ignition switch ON (II) Measure the voltage to ground:
    There should be less than 0.2 V.
    • Faulty MICU
    • An open or high resistance in the wire
  5. Reconnect the 22P connector to the power window master switch. Turn the ignition switch to ON (II), 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 control unit must be faulty; replace the power window master switch (see POWER WINDOW SWITCH REPLACEMENT  ).
    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    4 LT GRN Ignition switch ON (II) Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 1 (7.5 A) fuse in the under-dash fuse/relay box
    • An open or high resistance in the wire
    1 YEL Ignition switch ON (II) Measure the voltage to ground:
    There should be less than 0.2 V.
    • Blown No. 4 (P/W) (40 A) fuse in the under-hood fuse/relay box
    • Faulty power window relay
    • An open or high resistance in the wire
    15 WHT Under all conditions Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 26 (20 A) fuse in the under-dash fuse/relay box
    • An open or high resistance in the wire
    11 BRN 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
    22 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
    7 RED Ignition switch ON (II) Measure the voltage to ground:
    There should be battery voltage.
    • Faulty driver's power window master switch
    • A short to ground in the wire
    5 GRN Ignition switch ON (II), and driver's power window switch moving up or down Measure the voltage between terminals No. 5 and No. 7:
    An analog meter should alternate between 0 V and about 5 V (a digital voltmeter should read about 2.5 V while the window moves).
    • Faulty driver's power window motor
    • An open or high resistance in the wire
    • A short to ground in the wire
    6 ORN Ignition switch ON (II), and driver's power window switch moving up or down Measure the voltage between terminals No. 6 and No. 7:
    An analog meter should alternate between 0 V and about 5 V (a digital voltmeter should read about 2.5 V while the window moves).
  6. Reset the power window control unit (see RESETTING THE POWER WINDOW CONTROL UNIT  ).
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