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Home >> Toyota >> 2022 >> RAV4 LE, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 77 (Can Communication System (HV) - Circuit Tests (4 Of 6)) >> CAN COMMUNICATION SYSTEM (for HV Model) >> Check Bus 3 Line for Short to +B [11/2018 - 02/2019] >> Description

Check Bus 3 Line for Short to +B [11/2018 - 02/2019]: Description

WARNING: This page is about a different variant/trim than selected.

There may be a short circuit between one of the CAN bus wires and +B when there is no resistance between terminal 6 (CA3H) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 21 (CA3L) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 19 (CAYH) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 20 (CAYL) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3.

Symptom Trouble Area
  • There is no resistance between terminal 6 (CA3H) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 21 (CA3L) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3.
  • There is no resistance between terminal 19 (CAYH) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 20 (CAYL) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3.
  • Short to +B in CAN main bus wire
  • Short to +B in CAN branch wire
  • Central gateway ECU (network gateway ECU)
  • Bus buffer ECU*1
  • Radio and display receiver assembly*2
  • No. 5 CAN junction connector

*1: w/ Bus Buffer ECU

*2: for Radio and Display Type

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