DTC B1126: Driver's Power Window Motor B Pulse Malfunction

DTC (Door Multiplex Control Unit)

• 1. Problem verification:

  1. Check the parameter(s) below with the HDS.

  Signal	Current conditions
  	Values	Unit
  Driver's P/W Motor Pulse B

  Does the information indicator display DETECT while the window is moving, and display NONE when the window is stopped?

  YES 

  Intermittent failure, the system is OK at this time.

  NO 

  Go to step 2.

• 2. Power window motor pulse check:

  1. Turn the vehicle to the OFF (LOCK) mode.

  2. Disconnect the following connector.

  Driver's power window motor 6P connector

  3. Connect terminals A and B with a jumper wire.

  Terminal A	Driver's power window motor 6P connector No. 5
  Terminal B	Body ground

  Courtesy of HONDA, U.S.A., INC.

  4. Connect and disconnect the jumper wire to ground repeatedly.

  5. Check the parameter(s) below with the HDS.

  Signal	Current conditions
  	Values	Unit
  Driver's P/W Motor PulseB

  Does the information indicator display DETECT?

  YES 

  Faulty driver's power window motor; replace the driver's door regulator .

  NO 

  Go to step 3.

• 3. Shorted wire check (P/W DR MTR PLSB line):

  1. Turn the vehicle to the OFF (LOCK) mode.

  2. Disconnect the jumper wire.

  3. Disconnect the following connector.

  Power window master switch 37P connector

  4. Check for continuity between test points 1 and 2.

  Test condition	Vehicle OFF (LOCK) mode Driver's power window motor 6P connector: disconnected Power window master switch 37P connector: disconnected
  Test point 1	Power window master switch 37P connector No. 19 - Refer to: Power Window Master Switch Input Test(Without Door Multiplex Control Unit)Power Window Master Switch Input Test(With Door Multiplex Control Unit)
  Test point 2	Body ground

  Is there continuity?

  YES 

  Repair a short to ground in the wire.

  NO 

  Repair an open or high resistance in the wire.