DTC B2220-49: Back Door Motor Internal Electronic Failure [10/2023 - ]: Procedure

WARNING: This page is about a different car, the 2025 Toyota RAV4 and 2024 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

CLEAR DTC

Clear the DTCs.

Body Electrical > Back Door > Clear DTCs

Result

Proceed to
NEXT

Result:

See step 2

REPRODUCE DTC

Perform a power back door open or close operation.

Result

Proceed to
NEXT

Result:

See step 3

CHECK FOR DTC

Check for DTCs.

Body Electrical > Back Door > Trouble Codes

Result

Result	Proceed to
B2220-49 is output	A
B2220-49 is not output	B

Result:

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]

Result:

See step 4

INSPECT POWER BACK DOOR UNIT ASSEMBLY SET LH

Fully open the back door.

Disconnect the R21 power back door unit assembly set LH connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Component without harness connected (Power Back Door Unit Assembly Set LH)

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
R21-1 (BD+) - Body ground	Always	10 kΩ or higher
R21-2 (BD-) - Body ground	Always	10 kΩ or higher
R21-1 (BD+) - R21-2 (BD-)	Always	Below 1 MΩ

Result

Proceed to
OK
NG

Result:

REPLACE POWER BACK DOOR UNIT ASSEMBLY SET LH. Refer to REMOVAL [10/2023 - ]

Result:

See step 5

INSPECT POWER BACK DOOR UNIT ASSEMBLY SET RH

Fully open the back door.

Disconnect the R20 power back door unit assembly set RH connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Component without harness connected (Power Back Door Unit Assembly Set RH)

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
R20-1 (BD+2) - Body ground	Always	10 kΩ or higher
R20-2 (BD-2) - Body ground	Always	10 kΩ or higher
R20-1 (BD+2) - R20-2 (BD-2)	Always	Below 1 MΩ

Result

Proceed to
OK
NG

Result:

REPLACE POWER BACK DOOR UNIT ASSEMBLY SET RH. Refer to REMOVAL [10/2023 - ]

Result:

See step 6

CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - POWER BACK DOOR UNIT ASSEMBLY SET LH)

Disconnect the R29 multiplex network door ECU connector.
Disconnect the R21 power back door unit assembly set LH connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
R29-1 (BD+) - R21-1 (BD+)	Always	Below 1 Ω
R29-3 (BD-) - R21-2 (BD-)	Always	Below 1 Ω
R29-1 (BD+) or R21-1 (BD+) - Body ground	Always	10 kΩ or higher
R29-3 (BD-) or R21-2 (BD-) - Body ground	Always	10 kΩ or higher

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 7

CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - POWER BACK DOOR UNIT ASSEMBLY SET RH)

Disconnect the R29 multiplex network door ECU connector.
Disconnect the R20 power back door unit assembly set RH connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
R29-6 (BD+2) - R20-1 (BD+2)	Always	Below 1 Ω
R29-8 (BD-2) - R20-2 (BD-2)	Always	Below 1 Ω
R29-6 (BD+2) or R20-1 (BD+2) - Body ground	Always	10 kΩ or higher
R29-8 (BD-2) or R20-2 (BD-2) - Body ground	Always	10 kΩ or higher

Result

Proceed to
OK
NG

Result:

REPLACE MULTIPLEX NETWORK DOOR ECU. Refer to REMOVAL [10/2023 - ]

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR