DTC B2175: Driver's Power Window Motor Pulse A Error

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Clear the DTCs with the HDS.
Turn the ignition switch to LOCK (0), and then back ON (II).
Open and close the driver's power window by using the power window master switch manually.
Check for DTCs with the HDS.
Is DTC B2175 indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections.
Open and close the driver's power window by using the power window master switch manually.
Does the window motor operate?

YES - Go to step 6.

NO - Test the driver's power window motor (see DRIVER'S POWER WINDOW MOTOR TEST ).
Select the POWER WINDOWS from the BODY ELECTRICAL system select menu and enter the DATA LIST.
Check the DETECT/NONE information of the Driver's window motor A-phase pulse signal in the DATA LIST.
Does the information indicator display DETECT while the window is moving, and display NONE when the window is stopped?

YES - Replace the driver's MPCS unit.

NO - Go to step 8.
Check for DTCs with the HDS.
Is DTC B2176 also indicated?

YES - Go to step 15.

NO - Go to step 9.
Turn the ignition switch to LOCK (0).
Disconnect driver's MPCS unit connector B (14P).
Disconnect the 6P connector from the driver's power window motor.
Check for continuity between driver's MPCS unit connector B (14P) No. 5 terminal and driver's power window motor 6P connector No. 4 terminal.

Fig 1: Identifying Continuity Between Driver's MPCS Unit Connector Terminal 5
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 13.

NO - Repair open in the wire.
Check for continuity between driver's power window motor 6P connector No. 4 terminal and body ground.

Fig 2: Identifying Continuity Between Driver's Power Window Motor 6P Connector Terminal 4 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Repair short in the wire.

NO - Replace the driver's power window.
Test the driver's power window motor (see DRIVER'S POWER WINDOW MOTOR TEST ).
Is the motor OK?

YES - Replace the driver's MPCS unit.

NO - Replace the driver's power window motor.
Check for continuity between the driver's MPCS unit connector B (14P) No. 3 and No. 6 terminals and the driver's power window motor 6P connector No. 1 and No. 2 terminals respectively.

Fig 3: Identifying Continuity Between Driver's MPCS Unit B (14P) Connector Terminals 3 And 6
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 16.

NO - Repair an open in the wire.
Check for continuity between the driver's power window motor 6P connector No. 1 terminal and body ground.

Fig 4: Identifying Continuity Between Driver's Power Window Motor 6P Connector Terminal 1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Repair short to ground in the wire.

NO - Replace the driver's power window motor.