Tacoma

Toyota Tacoma 2015-2018 CAN Workshop Manual

Last Modified: 11-13-2015 6.6 U Doc ID: RM000000XVK0FHX
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: TERMINALS OF ECU; 2016 MY Tacoma [08/2015
- ]
TERMINALS OF ECU
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the
negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative
(-) battery terminal notices before proceeding with work .
Turn the ignition switch off before measuring the resistances between CAN main bus lines and between
CAN branch lines.
Turn the ignition switch off before inspecting CAN bus lines for a ground short.
Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1
minute or more without operating the key or switches, or opening or closing the doors. After that,
disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more
before measuring the resistance.
This section describes the standard values for all CAN related components.
HINT:
Operating the ignition switch, any other switches or a door triggers related ECU and sensor communication
on the CAN. This communication will cause the resistance value to change.
Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction
may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while
performing the inspection below may help determine the cause of the malfunction.
1. NO. 1 CAN JUNCTION CONNECTOR
(a) Check the No. 1 CAN junction connector.
(1) Connection diagram
Text in Illustration
*a
Front view of wire harness connector
(to No. 1 CAN Junction Connector)
*b
to Brake Booster Assembly (Skid Control ECU) (for
Hydraulic Brake Booster) or Brake Actuator Assembly
(Skid Control ECU) (for Vacuum Brake Booster)
(for V Bus)
*c
to No. 2 CAN Junction Connector
(for V Bus)
*d
to Air Conditioning Amplifier Assembly
(for V Bus)
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