Lexus IS250 IS220d GSE20 ALE20 - PRE-CRASH SAFETY
INSPECT FRONT SEAT OUTER BELT ASSEMBLY RH
CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY RH - SEAT BELT CONTROL ECU)
DTC B2002 Open in Seat Belt Motor RH Circuit
DESCRIPTION
The seat belt control ECU receives information from the distance control ECU using CAN communication and tightens the seat by operating the motor in the front seat outer belt assembly RH.
- CAUTION:
- The pretensioner is built into the front seat outer belt assembly RH. Be sure to follow the correct inspection procedure, as failure to follow the correct procedure (such as inspection of incorrect connectors) may deploy the pretensioner.
| DTC No. | DTC Detecting Condition | Trouble Area |
| B2002 | Open in the seat belt motor RH circuit continues for 1 second or more | Front seat outer assembly RH Wire harness (seat belt control ECU - front seat outer belt assembly RH) Seat belt control ECU |
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- When the seat belt control ECU is replaced with a new one, INITIALIZATION must be performed .
| 1.INSPECT FRONT SEAT OUTER BELT ASSEMBLY RH |
Disconnect the P8 connector of the front seat outer belt assembly RH.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection Condition Specified Condition P8-1 - P8-2 Always Below 1 MΩ
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| OK | |
| 2.CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY RH - SEAT BELT CONTROL ECU) |
Disconnect the negative (-) battery terminal.
Disconnect the O38 connector of the seat belt control ECU.
Using a service wire, connect P8-1 and P8-2 of the connector on the front seat outer belt assembly RH side.
- NOTICE:
- Do not forcibly insert the service wire into the terminals of a connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection Condition Specified Condition O38-1 (MOR+) - O38-10 (MOR-) Always Below 1 Ω
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| OK | ||
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LEXUS IS250, IS220d / GSE20 ALE20