Toyota RAV4 manuals

Toyota Sienna Service Manual: Short to B+ in Door System Communication Bus Malfunction/ Short to GND in Door System Communication Bus Malfunction

Toyota Sienna Service Manual / Multiplex communication / System description / Diagnostic trouble code chart / Short to B+ in Door System Communication Bus Malfunction/ Short to GND in Door System Communication Bus Malfunction

DTC B1214 Short to B+ in Door System Communication Bus Malfunction

DTC B1215 Short to GND in Door System Communication Bus Malfunction

DESCRIPTION

DTCs B1214 and B1215 are output when a short to +B or the body ground occurs on the communication bus. Detecting this condition disables all the BEAN communication and outputs some DTCs.

DTC No.

DTC Detection Condition

Trouble Area

B1214

Communication circuit and +B battery system short
  • Multiplex network gateway ECU
  • Multiplex network body ECU
  • Airbag sensor assembly
  • A/C amplifier
  • Combination meter
  • Power slide door ECU LH
  • Power slide door ECU RH
  • Power back door ECU
  • Seat position control ECU
  • Outer mirror control ECU LH
  • Outer mirror control ECU RH
  • Wire harness

B1215

Communication circuit and body ground short
  • Multiplex network gateway ECU
  • Multiplex network body ECU
  • Airbag sensor assembly
  • A/C amplifier
  • Combination meter
  • Power slide door ECU LH
  • Power slide door ECU RH
  • Power back door ECU
  • Seat position control ECU
  • Outer mirror control ECU LH
  • Outer mirror control ECU RH
  • Wire harness

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE: Disconnect connectors in operational sequence, and start the next operation after the connectors are connected

1 CHECK DTC (MULTIPLEX NETWORK BODY ECU - COMBINATION METER)

  1. Check the DTC when the B7 connector of the multiplex network body ECU and the combination meter connector are disconnected.

CHECK DTC

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, there is a malfunction between the B7 connector of the multiplex network body ECU and the combination meter.

2 CHECK DTC (COMBINATION METER)

  1. Check whether the output of the DTC stops when the combination meter connector is disconnected.

CHECK DTC (COMBINATION METER)

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the combination meter is malfunctioning.

3 CHECK DTC (A/C AMPLIFIER)

  1. Check whether the output of the DTC stops when the A/ C amplifier connector is disconnected.

CHECK DTC (A/C AMPLIFIER)

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the A/C amplifier is malfunctioning.

4 CHECK HARNESS AND CONNECTOR (COMBINATION METER - A/C AMPLIFIER)

  1. Check whether the output of the DTC stops when the combination meter connector and the A/C amplifier connector are disconnected.

CHECK HARNESS AND CONNECTOR

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the wire harness between the combination meter and the A/C amplifier is malfunctioning.

5 CHECK DTC (AIRBAG SENSOR ASSEMBLY)

  1. Check whether the output of the DTC stops when the airbag sensor assembly connector is disconnected.

CHECK DTC (AIRBAG SENSOR ASSEMBLY)

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the airbag sensor assembly is malfunctioning.

6 CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - AIRBAG SENSOR ASSEMBLY)

  1. Check whether the output of the DTC stops when the A/ C amplifier connector and the airbag sensor assembly connector are disconnected.

 CHECK HARNESS AND CONNECTOR

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the wire harness between the A/C amplifier and airbag sensor assembly is malfunctioning.

7 CHECK DTC (MULTIPLEX NETWORK BODY ECU)

  1. Check whether the output of the DTC stops when the B7 and 1E connectors of the multiplex network body ECU are disconnected.

CHECK DTC (MULTIPLEX NETWORK BODY ECU)

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the multiplex network body ECU is malfunctioning.

REPAIR OR REPLACE HARNESS OR CONNECTOR (AIRBAG SENSOR ASSEMBLY - MULTIPLEX NETWORK BODY ECU)

8 CHECK DTC (POWER SLIDE DOOR ECU LH)

  1. Check whether the output of the DTC stops when the power slide door ECU LH connector is disconnected.

CHECK DTC (POWER SLIDE DOOR ECU LH)

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the power slide door ECU LH is malfunctioning

9 CHECK DTC (POWER SLIDE DOOR ECU RH)

  1. Check whether the output of the DTC stops when the power slide door ECU RH connector is disconnected.

CHECK DTC (POWER SLIDE DOOR ECU RH)

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the power slide door ECU RH is malfunctioning.

10 CHECK DTC (POWER BACK DOOR ECU)

  1. Check whether the output of the DTC stops when the power back door ECU connector is disconnected.

CHECK DTC (POWER BACK DOOR ECU)

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the power back door ECU is malfunctioning.

11 CONFIRM MODEL

Result

Result

12 CHECK DTC (SEAT POSITION CONTROL ECU)

  1. Check whether the output of the DTC stops when the seat position control ECU connector is disconnected.

CHECK DTC (SEAT POSITION CONTROL ECU)

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the seat position control ECU is malfunctioning.

13 CHECK DTC (OUTER MIRROR CONTROL ECU LH)

  1. Check whether the output of the DTC stops when the outer mirror control ECU LH connector is disconnected.

CHECK DTC (OUTER MIRROR CONTROL ECU LH)

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the outer mirror control ECU LH is malfunctioning.

14 CHECK DTC (OUTER MIRROR CONTROL ECU RH)

  1. Check whether the output of the DTC stops when the outer mirror control ECU RH connector is disconnected.

CHECK DTC (OUTER MIRROR CONTROL ECU RH)

OK: DTC B1214 or B1215 is not output.

HINT: When the output of the DTC stops, the outer mirror control ECU RH is malfunctioning.

15 CHECK HARNESS AND CONNECTOR

  1. Check for a short to +B or body ground.
  2. Disconnect the multiplex network gateway ECU, combination meter, power slide door ECU LH, power slide door ECU RH, power back door ECU, seat position control ECU (*1), outer mirror control ECU LH (*1), outer mirror control ECU RH (*1) and the B7 connector of the multiplex network body ECU.

CHECK HARNESS AND CONNECTOR

HINT: *1: with Driving position memory

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

Standard voltage

Standard voltage

Standard voltage

HINT: *1: with Driving position memory

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

Standard resistance

Standard resistance

HINT: *1: with Driving position memory

REPLACE MULTIPLEX NETWORK GATEWAY ECU

Driver Side Outer Mirror
DTC B1209 Driver Side Outer Mirror DESCRIPTION This DTC is detected when communication between the outer mirror control ECU LH and multiplex network gateway ECU stops for more than 10 seconds ...

Rear Door ECU RH Communication Stop
DTC B1216 Rear Door ECU RH Communication Stop DESCRIPTION DTC B1216 is output when communication between the power slide door ECU RH and the multiplex network gateway ECU stops for more than 10 s ...

Other materials:

Installation
1. INSTALL CENTER REAR SEAT LAP TYPE BELT ASSEMBLY (for 8-Passenger) HINT: Refer to the instructions for reassembly of the rear No. 1 seat assembly (for center seat).  Install the center rear seat lap type belt assembly with the bolt. Torque: 42 N*m (430 kgf*cm, 31 ft.*lbf) 2. IN ...

How to proceed with troubleshooting
HINT:  Troubleshooting of the wireless door lock control system is based on the premise that the power door lock system, the power slide door system, the power back door system and the power window system are operating normally. Therefore, before troubleshooting the wireless door lo ...

Engine hood courtesy switch
Inspection 1. INSPECT ENGINE HOOD COURTESY SWITCH  Measure the resistance according to the value(s) in the table below. Standard resistance If the result is not as specified, replace the hood lock assembly. ...

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