DTC B261C, B261D, B261E, B261F

DTC B261C : Rear 1st sensor data failure

DTC B261D : Rear 2nd sensor data failure

DTC B261E : Rear 3rd sensor data failure

DTC B261F : Rear 4th sensor data failure

DTC Description	DTC
B261C Rear 1st sensor data failure
B261D Rear 2nd sensor data failure
B261E Rear 3rd sensor data failure
B261F Rear 4th sensor data failure

DTC (Parking and Back-Up Sensor Control Unit)

NOTE:

If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A .
Before you troubleshoot, resetting the parking and back-up sensor control unit .
The connection order of the sensor is 1st (left corner sensor) -> 2nd (left center sensor) -> 3rd (right center sensor) -> 4th (right corner sensor) from the side near the control unit.

Problem verification

-1. Clear the DTCs with the HDS.

Clear DTCs

-2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

-3. Wait for at least 6 seconds.

-4. Check for DTCs with the HDS.

DTC Description	DTC
B261C Rear 1st sensor data failure
B261D Rear 2nd sensor data failure
B261E Rear 3rd sensor data failure
B261F Rear 4th sensor data failure

Is DTC B261C, B261D, B261E, and/or B261F indicated?

YES

Go to step 2.

Intermittent failure, the system is OK at this time. Check for loose or poor connections.

DTC check

-1. Check for DTCs with the HDS.

DTC Description	DTC
B261C Rear 1st sensor data failure
B261D Rear 2nd sensor data failure
B261E Rear 3rd sensor data failure
B261F Rear 4th sensor data failure
B2647 Rear sensor power failure
B2649 Rear sensor signal short to ground

Is DTC B261C, B261D, B261E, B261F, B2647, and/or B2649 indicated?

YES

Go to step 3.

YES

Go to step 4.

YES

Go to step 5.

YES

Go to step 6.

YES

Go to parking and back-up sensor system DTC B2647 troubleshooting .

YES

Go to parking and back-up sensor system DTC B2649 troubleshooting .

Intermittent failure, the system is OK at this time. Check for loose or poor connections.

Open wire check (RSG L, RSP L, RSS L lines)

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

-2. Disconnect the following connectors.

Parking and back-up sensor control unit 16P connector
Left rear corner sensor 6P connector

-3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode Parking and back-up sensor control unit 16P connector: disconnected Left rear corner sensor 6P connector: disconnected
Test point 1	Parking and back-up sensor control unit 16P connector No. 12
Test point 2	Left rear corner sensor 6P connector (female terminals) No. 2:

Test point 1	Parking and back-up sensor control unit 16P connector No. 16
Test point 2	Left rear corner sensor 6P connector (female terminals) No. 6:

Test point 1	Parking and back-up sensor control unit 16P connector No. 14
Test point 2	Left rear corner sensor 6P connector (female terminals) No. 4:

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

Is there continuity?

YES

Replace the left rear corner sensor .

Repair an open or high resistance in the wire(s).

Open wire check (RSG CL, RSP CL, RSS CL lines)

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

-2. Disconnect the following connectors.

Left rear corner sensor 6P connector
Left rear center sensor 6P connector

-3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode Left rear corner sensor 6P connector: disconnected Left rear center sensor 6P connector: disconnected
Test point 1	Left rear corner sensor 6P connector (female terminals) No. 1:
Test point 2	Left rear center sensor 6P connector (female terminals) No. 2:

Test point 1	Left rear corner sensor 6P connector (female terminals) No. 5:
Test point 2	Left rear center sensor 6P connector (female terminals) No. 6:

Test point 1	Left rear corner sensor 6P connector (female terminals) No. 3:
Test point 2	Left rear center sensor 6P connector (female terminals) No. 4:

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

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

Is there continuity?

YES

Replace the left rear center sensor .

Repair an open or high resistance in the wire(s).

Open wire check (RSG CR, RSP CR, RSS CR lines)

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

-2. Disconnect the following connectors.

Left rear center sensor 6P connector
Right rear center sensor 6P connector

-3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode Left rear center sensor 6P connector: disconnected Right rear center sensor 6P connector: disconnected
Test point 1	Left rear center sensor 6P connector (female terminals) No. 1:
Test point 2	Right rear center sensor 6P connector (female terminals) No. 2:

Test point 1	Left rear center sensor 6P connector (female terminals) No. 5:
Test point 2	Right rear center sensor 6P connector (female terminals) No. 6:

Test point 1	Left rear center sensor 6P connector (female terminals) No. 3:
Test point 2	Right rear center sensor 6P connector (female terminals) No. 4:

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

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

Is there continuity?

YES

Replace the right rear center sensor .

Repair an open or high resistance in the wire(s).

Open wire check (RSG R, RSP R, RSS R lines)

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

-2. Disconnect the following connectors.

Right rear center sensor 6P connector
Right rear corner sensor 6P connector

-3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode Right rear center sensor 6P connector: disconnected Right rear corner sensor 6P connector: disconnected
Test point 1	Right rear center sensor 6P connector (female terminals) No. 1:
Test point 2	Right rear corner sensor 6P connector (female terminals) No. 2:

Test point 1	Right rear center sensor 6P connector (female terminals) No. 5:
Test point 2	Right rear corner sensor 6P connector (female terminals) No. 6:

Test point 1	Right rear center sensor 6P connector (female terminals) No. 3:
Test point 2	Right rear corner sensor 6P connector (female terminals) No. 4:

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

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

Is there continuity?

YES

Replace the right rear corner sensor .

Repair an open or high resistance in the wire(s).