Toyota RAV4 manuals

Toyota Sienna Service Manual: Power Seat ECU Communication Stop

DTC B1272 Power Seat ECU Communication Stop

DESCRIPTION

This DTC is detected when communication between the seat position control ECU and the multiplex network gateway ECU stops for more than 10 seconds.

DTC No.

DTC Detection Condition

Trouble Area

B1272

Power seat ECU communication stops
  • Seat position control ECU
  • Wire harness

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 CHECK HARNESS AND CONNECTOR (SEAT POSITION CONTROL ECU - BATTERY)

CHECK HARNESS AND CONNECTOR (SEAT POSITION CONTROL ECU - BATTERY)

  1. Disconnect the P58 and P59 ECU connectors.
  2. Measure the voltage according to the value(s) in the table below.

Standard voltage

Standard voltage

2 CHECK HARNESS AND CONNECTOR (SEAT POSITION CONTROL ECU - GROUND)

CHECK HARNESS AND CONNECTOR (SEAT POSITION CONTROL ECU - GROUND)

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

Standard resistance

Standard resistance

3 CHECK COMMUNICATION LINE

CHECK COMMUNICATION LINE

  1. Disconnect the G4 ECU connector.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

Result

Result

REPLACE SEAT POSITION CONTROL ECU

Combination Meter ECU Communication Stop
DTC B1271 Combination Meter ECU Communication Stop DESCRIPTION DTC B1271 is output when communication between the combination meter and the multiplex network gateway ECU stops for more than 10 se ...

Airbag ECU Communication Stop
DTC B1281 Airbag ECU Communication Stop DESCRIPTION DTC B1281 is output when communication between the airbag ECU and the multiplex network gateway ECU stops for more than 10 seconds. ...

Other materials:

BMW Drive Recorder
General information The system stores brief video recordings of the surrounding area of the vehicle, e.g., to document traffic events. Additionally, the following parameters are stored for the trip: Date. Time. Vehicle speed. GPS coordinates. General information There are various ways for stor ...

Trailer towing (with towing package)
Your vehicle is designed primarily as a passenger-and-load-carrying vehicle. Towing a trailer can have an adverse impact on handling, performance, braking, durability, and fuel consumption. For your safety and the safety of others, you must not overload your vehicle or trailer. You must also e ...

Engine front oil seal
COMPONENTS REMOVAL 1. REMOVE FRONT WHEEL RH 2. REMOVE FRONT FENDER APRON SEAL RH (See page EM-26) 3. REMOVE V-RIBBED BELT (See page EM-6) 4. REMOVE CRANKSHAFT PULLEY (a) Using SST, loosen the crankshaft pulley bolt. SST 09213-70011 (09213-70020), 09330-00021 (b) Using SST, remove ...

В© 2011-2022 Copyright www.tsienna.net