Home/Toyota/4Runner/Toyota 4Runner V (2009-2013)/Repair manual/Communication Devices/LIN Communication System (Diagnostic Codes & Symptom Tests)…
Contents Wiring diagrams Section: Communication Devices All sections

LIN Communication System (Diagnostic Codes & Symptom Tests): Overview Toyota 4Runner V

Communication Devices 16 illustrations ~717 words

DESCRIPTION

This DTC is stored when LIN communication between the multiplex network master switch assembly and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC CodeDTC Detection ConditionTrouble Area
B1206No communication between the multiplex network master switch assembly and main body ECU (multiplex network body ECU) for 10 seconds or more.Multiplex network master switch assembly Main body ECU (multiplex network body ECU) Harness or connector

Scheme 78

Scheme 78: WIRING DIAGRAM

This DTC is stored when LIN communication between the sliding roof drive gear sub-assembly and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC CodeDTC Detection ConditionTrouble Area
B1273No communication between the sliding roof drive gear sub-assembly and main body ECU (multiplex network body ECU) for 10 seconds or more.Sliding roof drive gear sub-assembly Main body ECU (multiplex network body ECU) Harness or connector

Scheme 79

Scheme 79: WIRING DIAGRAM

This DTC is stored when LIN communication between the multiplex network door ECU (back door P/W) and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC CodeDTC Detection ConditionTrouble Area
B1287No communication between the multiplex network door ECU (back door P/W) and main body ECU (multiplex network body ECU) for 10 seconds or more.Multiplex network door ECU (back door P/W) Main body ECU (multiplex network body ECU) Harness or connector

Scheme 80

Scheme 80: WIRING DIAGRAM
  1. DTC B2287 is stored when there is an open or short circuit or an ECU communication malfunction between the power management control ECU and certification ECU.
  2. DTC B278C is stored when LIN communication between the certification ECU and power management control ECU stops for 10 seconds or more.
DTC CodeDTC Detection ConditionTrouble Area
B2287There is an open or short circuit or an ECU communication malfunction between the power management control ECU and certification ECU.Certification ECU Power management control ECU Harness or connector
B278CNo communication between the certification ECU and power management control ECU for 10 seconds or more.Certification ECU Power management control ECU Harness or connector

Scheme 81

Scheme 81: WIRING DIAGRAM

This DTC is stored when LIN communication between the front power window regulator motor assembly LH and main body ECU stops for 10 seconds or more.

DTC CodeDTC Detection ConditionTrouble Area
B2321No communication between the front power window regulator motor assembly LH and main body ECU for 10 seconds or more.Front power window regulator motor assembly LH Main body ECU Harness or connector

Scheme 82

Scheme 82: WIRING DIAGRAM

This DTC is stored when LIN communication between the front power window regulator motor assembly RH and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC CodeDTC Detection ConditionTrouble Area
B2322No communication between the front power window regulator motor assembly RH and main body ECU (multiplex network body ECU) for 10 seconds or more.Front power window regulator motor assembly RH Main body ECU (multiplex network body ECU) Harness or connector

Scheme 83

Scheme 83: WIRING DIAGRAM

This DTC is stored when LIN communication between the rear power window regulator motor assembly RH and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC CodeDTC Detection ConditionTrouble Area
B2323No communication between the rear power window regulator motor assembly RH and main body ECU (multiplex network body ECU) for 10 seconds or more.Rear power window regulator motor assembly RH Main body ECU (multiplex network body ECU) Harness or connector

Scheme 84

Scheme 84: WIRING DIAGRAM

This DTC is stored when LIN communication between the rear power window regulator motor assembly LH and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC CodeDTC Detection ConditionTrouble Area
B2324No communication between the rear power window regulator motor assembly LH and main body ECU (multiplex network body ECU) for 10 seconds or more.Rear power window regulator motor assembly LH Main body ECU (multiplex network body ECU) Harness or connector

Scheme 85

Scheme 85: WIRING DIAGRAM

The main body ECU (multiplex network body ECU) intermittently monitors the LIN communication bus between the components related to the doors and sliding roof drive gear sub-assembly*. DTC B2325 is stored when a malfunction in the LIN communication bus between the components related to the doors and sliding roof drive gear sub-assembly* is detected consecutively 3 times.

  1. *: w/ Sliding Roof System
DTC CodeDTC Detection ConditionTrouble Area
B2325The main body ECU (multiplex network body ECU) detects a malfunction in the LIN communication bus between components related to the doors and sliding roof drive gear sub-assembly* consecutively 3 times.Multiplex network master switch assembly Front power window regulator motor assembly LH Front power window regulator motor assembly RH Rear power window regulator motor assembly LH Rear power window regulator motor assembly RH Multiplex network door ECU (back door P/W) Sliding roof drive gear sub-assembly* Main body ECU (multiplex network body ECU) Harness or connector
  1. *: w/ Sliding Roof System

Scheme 86

Scheme 86: WIRING DIAGRAM
  1. DTC B2327 is stored when LIN communication between the multiplex network door ECU (back door P/W) and back door power window regulator motor assembly stops for 10 seconds or more.
  2. DTC B2328 is stored when a malfunction in the LIN communication bus between the multiplex network door ECU (back door P/W) and back door power window regulator motor assembly is detected consecutively 3 times. DTC Code DTC Detection Condition Trouble Area B2327 No communication between the multiplex network door ECU (back door P/W) and back door power window regulator motor assembly for 10 seconds or more. Multiplex network door ECU (back door P/W) Back door power window regulator motor assembly Harness or connector B2328 The multiplex network door ECU (back door P/W) detects a malfunction in the LIN communication bus between the multiplex network door ECU (back door P/W) and back door power window regulator motor assembly consecutively 3 times. Multiplex network door ECU (back door P/W) Back door power window regulator motor assembly Harness or connector

Scheme 87

Scheme 87: WIRING DIAGRAM

This DTC is stored when LIN communication between the drive monitor switch and combination meter assembly stops 10 seconds or more.

DTC CodeDTC Detection ConditionTrouble Area
B2661No communication between the drive monitor switch and combination meter assembly for 10 seconds or more.Drive monitor switch Combination meter assembly Harness or connector

Scheme 88

Scheme 88: WIRING DIAGRAM

This DTC is stored when LIN communication between the drive monitor switch and accessory meter assembly stops for 10 seconds or more.

DTC CodeDTC Detection ConditionTrouble Area
B2662No communication between the drive monitor switch and accessory meter assembly for 10 seconds or more.Drive monitor switch Accessory meter assembly Harness or connector

Scheme 89

Scheme 89: WIRING DIAGRAM

The certification ECU intermittently monitors the LIN communication bus between the components related to certification. DTC B2785 is stored when a malfunction in the LIN communication bus between the components related to certification is detected continuously 3 times.

DTC CodeDTC Detection ConditionTrouble Area
B2785The certification ECU detects a malfunction in the LIN communication bus between components related to certification continuously 3 times.Certification ECU Power management control ECU ID code box Steering lock actuator assembly (steering lock ECU) Harness or connector

Scheme 90

Scheme 90: WIRING DIAGRAM

This DTC is stored when LIN communication between the certification ECU and steering lock actuator assembly (steering lock ECU) stops for 10 seconds or more.

DTC CodeDTC Detection ConditionTrouble Area
B2786LIN communication between the certification ECU and steering lock ECU stops for 10 seconds or more.Steering lock actuator assembly (steering lock ECU) Certification ECU Harness or connector

Scheme 91

Scheme 91: WIRING DIAGRAM

This DTC is stored when LIN communication between the certification ECU and ID code box stops for 10 seconds or more.

DTC CodeDTC Detection ConditionTrouble Area
B2789No communication between the certification ECU and ID code box for 10 seconds or more.ID code box Certification ECU Harness or connector

Scheme 92

Scheme 92: WIRING DIAGRAM

When a switch of the air conditioning control assembly is operated, the air conditioning control assembly uses LIN communication to communicate with the air conditioning amplifier. If a switch of the air conditioning control assembly does not operate properly, a problem with the LIN communication between the air conditioning control assembly and air conditioning amplifier may be causing the malfunction.

Scheme 93

Scheme 93: WIRING DIAGRAM

See also:
DISASSEMBLY