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LIN Communication (Diagnostic Codes): Overview Toyota Venza I

Communication Devices 11 illustrations ~415 words

DESCRIPTION

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

DTC No.DTC Detection ConditionTrouble Area
B1206No communication between the multiplex network master switch assembly and main body ECU (driver side junction block assembly) for more than 10 seconds.Multiplex network master switch assembly Main body ECU (Driver side junction block assembly) Wire harness or connector ECU-B NO. 2 fuse

Scheme 75

Scheme 75: WIRING DIAGRAM

Refer to DTC B124D (Lighting system). Refer to DTC B124D: Lost Communication with AFS LIN.

DTC No.DTC Detection ConditionTrouble Area
B124DMalfunctions in LIN communication systemInner rear view mirror assembly Harness or connector AFS ECU (headlight swivel ECU assembly)

This DTC is stored when LIN communication between the sliding roof ECU (sliding roof drive gear sub-assembly) and main body ECU (driver side junction block assembly) stops for more than 10 seconds.

DTC No.DTC Detection ConditionTrouble Area
B1273No communication between the sliding roof ECU (sliding roof drive gear sub-assembly) and main body ECU (driver side junction block assembly) for more than 10 seconds.Sliding roof ECU (Sliding roof drive gear sub-assembly) Main body ECU (Driver side junction block assembly) Wire harness or connector S/ROOF fuse

Scheme 76

Scheme 76: WIRING DIAGRAM

This DTC is stored when there is an open, short or ECU communication malfunction between the power management control ECU and certification ECU (smart key ECU assembly).

DTC No.DTC Detection ConditionTrouble Area
B2287There is an open, short or ECU communication malfunction between the power management control ECU and certification ECU (smart key ECU assembly).Power management control ECU Certification ECU (Smart key ECU assembly) Wire harness or connector

Scheme 77

Scheme 77: WIRING DIAGRAM

This DTC is stored when LIN communication between the power window regulator motor assembly (for driver side) and main body ECU (driver side junction block assembly) stops for more than 10 seconds.

DTC No.DTC Detection ConditionTrouble Area
B2321No communication between the power window regulator motor assembly (for driver side) and main body ECU (driver side junction block assembly) for more than 10 seconds.Power window regulator motor assembly (for Driver side) Main body ECU (Driver side junction block assembly) Multiplex network master switch assembly Wire harness or connector FL DOOR fuse

Scheme 78

Scheme 78: WIRING DIAGRAM

This DTC is stored when LIN communication between the power window regulator motor assembly (for front passenger side) and main body ECU (driver side junction block assembly) stops for more than 10 seconds.

DTC No.DTC Detection ConditionTrouble Area
B2322No communication between the power window regulator motor assembly (for front passenger side) and main body ECU (driver side junction block assembly) for more than 10 seconds.Power window regulator motor assembly (for Front passenger side) Main body ECU (Driver side junction block assembly) Wire harness or connector FR DOOR fuse

Scheme 79

Scheme 79: WIRING DIAGRAM

This DTC is stored when LIN communication between the power window regulator motor assembly (for rear RH side) and main body ECU (driver side junction block assembly) stops for more than 10 seconds.

DTC No.DTC Detection ConditionTrouble Area
B2323No communication between the power window regulator motor assembly (for rear RH side) and main body ECU (driver side junction block assembly) for more than 10 seconds.Power window regulator motor assembly (for Rear RH side) Main body ECU (Driver side junction block assembly) Wire harness or connector RR DOOR fuse

Scheme 80

Scheme 80: WIRING DIAGRAM

This DTC is stored when LIN communication between the power window regulator motor assembly (for rear LH side) and main body ECU (driver side junction block assembly) stops for more than 10 seconds.

DTC No.DTC Detection ConditionTrouble Area
B2324No communication between the power window regulator motor assembly (for rear LH side) and main body ECU (driver side junction block assembly) for more than 10 seconds.Power window regulator motor assembly (for Rear LH side) Main body ECU (Driver side junction block assembly) Wire harness or connector RL DOOR fuse

Scheme 81

Scheme 81: WIRING DIAGRAM

The main body ECU (driver side junction block assembly) monitors communication between all the ECUs connected to the door bus lines. When the main body ECU (driver side junction block assembly) detects errors in communication with all the ECUs connected to the door bus lines at 2.6-second intervals and 3 times in a row, DTC B2325 will be stored.

DTC No.DTC Detection ConditionTrouble Area
B2325The main body ECU (driver side junction block assembly) detects errors in communication with the ECUs connected to the door bus lines 3 times in a row.Power window regulator motor assembly (for Driver side) Power window regulator motor assembly (for Front passenger side) Power window regulator motor assembly (for Rear RH side) Power window regulator motor assembly (for Rear LH side) Multiplex network master switch assembly Sliding roof ECU (Sliding roof drive gear sub-assembly) Main body ECU (driver side junction block assembly) Wire harness or connector

Scheme 82

Scheme 82: WIRING DIAGRAM

Refer to DTC B2432 (Lighting system). Refer to DTC B2432: Lost Communication with Automatic High Beam Sensor.

DTC No.DTC Detection ConditionTrouble Area
B2432Malfunction in LIN communication systemInner rear view mirror assembly Harness or connector AFS ECU (headlight swivel ECU assembly)

This DTC is stored when LIN communication from the certification ECU stops for a certain amount of time.

DTC No.DTC Detection ConditionTrouble Area
B2785Errors in LIN communication between the ECUs or an open or short in communication lines. LIN communication from the certification ECU (smart key ECU assembly) stops for a certain amount of time or more.Certification ECU (Smart key ECU assembly) Power source control ECU (Power management control computer assembly) Steering lock ECU (Steering lock actuator assembly) Wire harness or connector

Scheme 83

Scheme 83: WIRING DIAGRAM

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

DTC No.DTC Detection ConditionTrouble Area
B2786No communication between the steering lock ECU (steering lock actuator assembly) and certification ECU (smart key ECU assembly) for more than 10 seconds.Steering lock ECU (Steering lock actuator assembly) Certification ECU (Smart key ECU assembly) Wire harness or connector STR LOCK fuse

Scheme 84

Scheme 84: WIRING DIAGRAM

This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and power management control ECU stops for more than 10 seconds.

DTC CodeDTC Detection ConditionTrouble Area
B278CNo communication between the certification ECU (smart key ECU assembly) and power management control ECU for more than 10 seconds.Power management control ECU Certification ECU (Smart key ECU assembly) Wire harness or connector AM2 fuse

Scheme 85

Scheme 85: WIRING DIAGRAM

See also:
REMOVAL