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Toyota Sienna Service Manual: Diagnostic trouble code chart

Toyota Sienna Service Manual / Multiplex communication / System description / Diagnostic trouble code chart

If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the chart below (Proceed to the page given for that circuit).

MULTIPLEX COMMUNICATION SYSTEM

DTC Code

Detection Item

Trouble Area
B1200 MPX Body ECU Stop
  1. Multiplex network body ECU
  2. Wire harness
B1208 Passenger Side Outer Mirror ECU
  1. Outer mirror control ECU RH
  2. Wire harness
B1209 Driver Side Outer Mirror
  1. Outer mirror control ECU LH
  2. Wire harness
B1214 Short to B+ in Door System Communication Bus Malfunction
  1. Multiplex network gateway ECU
  2. Multiplex network body ECU
  3. Airbag sensor assembly
  4. A/C amplifier
  5. Combination meter
  6. Power slide door ECU LH
  7. Power slide door ECU RH
  8. Power back door ECU
  9. Seat position control ECU
  10. Outer mirror control ECU LH
  11. Outer mirror control ECU RH
  12. Wire harness
B1215 Short to GND in Door System Communication Bus Malfunction
  1. Multiplex network gateway ECU
  2. Multiplex network body ECU
  3. Airbag sensor assembly
  4. A/C amplifier
  5. Combination meter
  6. Power slide door ECU LH
  7. Power slide door ECU RH
  8. Power back door ECU
  9. Seat position control ECU
  10. Outer mirror control ECU LH
  11. Outer mirror control ECU RH
  12. Wire harness
B1216 Rear Door ECU RH Communication Stop
  1. Power slide door ECU RH
  2. Wire harness
B1217 Rear Door ECU LH Communication Stop
  1. Power slide door ECU LH
  2. Wire harness
B1262 A/C ECU Communication Stop
  1. A/C amplifier
  2. Wire harness
B1271 Combination Meter ECU Communication Stop
  1. Combination meter
  2. Wire harness
B1272 Power Seat ECU Communication Stop
  1. Seat position control ECU
  2. Wire harness
B1281 Airbag ECU Communication Stop
  1. Airbag sensor assembly
  2. Wire harness
B1287 Back Door ECU Communication Stop
  1. Power back door ECU
  2. Wire harness

HINT: When DTCs indicating "+B or GND short malfunction of communication bus" (B1214, B1215) are detected at the same time as DTCs indicating "communication stop" (B1200, B1208, etc.), repair DTCs indicating "+B or GND short malfunction of communication bus" first.

DTC check / clear
1. CHECK DTC Prepare the intelligent tester. Connect the intelligent tester to DLC3. Turn the ignition switch to the ON position and turn the intelligent tester main switch ON. Use the i ...

MPX Body ECU Stop
DTC B1200 MPX Body ECU Stop DESCRIPTION This DTC is detected when communication between the multiplex network body ECU and the multiplex network gateway ECU stops for more than 10 seconds. ...

Other materials:

Reassembly
1. INSTALL STRAIGHT PIN (a) Using a plastic hammer, tap in new straight pins to the cylinder block. Standard protrusion 2. INSTALL STUD BOLT (a) Using E8 and E10 "TORX" sockets, install the stud bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) for bolt A 17 N*m (173 kgf*cm, ...

Description of code registration
It is necessary to register the transmitter ID in the tire pressure warning ECU when replacing the tire pressure warning valve and transmitter and/or tire pressure warning ECU. (a) Before registration (1) In case of tire pressure warning ECU replacement. Read the registered transmitter I ...

Vehicle Position Mark is not Updated
INSPECTION PROCEDURE 1 CHECK MAP DISC Check that the map disc is not deformed or cracked. OK: No deformations or cracks on map disc. 2 CHECK MAP DISPLAY Check if a touch scroll can be performed on the map display. OK: Touch scroll can be performed 3 CHECK VEHICLE SENSOR (NAV ...

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