DTC Troubleshooting: B1126
DTC B1126: Driver's Power Window Motor B Pulse Malfunction
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

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

1.
Problem verification:

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:

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. 3
Terminal B
Body ground


?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 Pulse B
   

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):

Shorted wire check (P/W DR MTR PLSB line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Power window master switch 37P connector

?3.
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
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.?