DTC B2250-01: Back Door Closer General Electrical Failure [08/2021 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. 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

DTC REPRODUCTION TEST

Wait for approximately 10 seconds.

Result

Proceed to
NEXT

Result:

See step 3

CHECK FOR DTC

Check for DTCs.

Body Electrical > Back Door > Trouble Codes

Result

Result	Proceed to
B2250-01 is not output	A
B2250-01 is output	B

Result:

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

Result:

See step 4

CHECK HARNESS AND CONNECTOR (LUGGAGE CLOSER MOTOR ASSEMBLY - LUGGAGE DOOR CLOSER ASSEMBLY)

Disconnect the R25 luggage closer motor assembly connector.
Disconnect the R18 luggage door closer assembly connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
R25-10 (CSG) - R18-4 (CPSE)	Always	Below 1 Ω
R25-8 (CS2) - R18-9 (CPS2)	Always	Below 1 Ω
R25-7 (CS1) - R18-2 (CPS1)	Always	Below 1 Ω
R25-5 (CSV) - R18-3 (CPS+)	Always	Below 1 Ω
R25-10 (CSG) or R18-4 (CPSE) - Body ground	Always	10 kΩ or higher
R25-8 (CS2) or R18-9 (CPS2) - Body ground	Always	10 kΩ or higher
R25-7 (CS1) or R18-2 (CPS1) - Body ground	Always	10 kΩ or higher
R25-5 (CSV) or R18-3 (CPS+) - Body ground	Always	10 kΩ or higher

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 5

CHECK LUGGAGE CLOSER MOTOR ASSEMBLY

Reconnect the R25 luggage closer motor assembly connector.
Reconnect the R18 luggage door closer assembly connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
R18-4 (CPSE) - Body ground	Always	Below 1 Ω

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

Standard Voltage

Tester Connection	Condition	Specified Condition
R18-2 (CPS1) - Body ground	Power switch on (IG), power trunk lid not operate	7 V or higher
R18-3 (CPS+) - Body ground	Power switch on (IG), power trunk lid not operate	7 V or higher
R18-9 (CPS2) - Body ground	Power switch on (IG), power trunk lid not operate	7 V or higher

Result

Proceed to
OK
NG

Result:

REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY. Refer to REMOVAL [06/2018 - ]

Result:

See step 6

CHECK LUGGAGE DOOR CLOSER ASSEMBLY

Disconnect R18-8 (M+) and R18-1 (M-) from the luggage door closer assembly connectors.
Reconnect the R18 luggage door closer assembly connector.

Using an oscilloscope, check the waveform.

*a	Component with harness connected (Luggage Door Closer Assembly)	*b	Waveform 1
*c	Waveform 2	-	-

NOTE:

Do not operate any other functions until this inspection is finished.

Tester Connection	Condition	Tool Setting	Specified Condition
R18-2 (CPS1) - Body ground	Auxiliary battery positive (+) → R18-8 (M+) Auxiliary battery negative (-) → R18-1 (M-)	2 V/DIV., 10 ms./DIV.	Pulse generation (waveform 1)
R18-9 (CPS2) - Body ground	Auxiliary battery positive (+) → R18-8 (M+) Auxiliary battery negative (-) → R18-1 (M-)	2 V/DIV., 10 ms./DIV.	Pulse generation (waveform 2)

Result

Proceed to
OK
NG

Result:

REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY. Refer to REMOVAL [08/2021 - ]

Result:

REPLACE LUGGAGE DOOR CLOSER ASSEMBLY. Refer to REMOVAL [06/2018 - ]