Tacoma

Toyota Tacoma 2015-2018 CAN Workshop Manual

Last Modified: 11-13-2015 6.6 C Doc ID: RM000002DX80DXX
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U1002; Lost Communication with Gateway
Module (Network Gateway ECU); 2016 MY Tacoma [08/2015 - ]
DTC U1002 Lost Communication with Gateway Module (Network Gateway ECU)
DESCRIPTION
The network gateway ECU will store this DTC when no signals can be received from the ECUs that have
been memorized as those that are connected to sub bus 2.
When the network gateway ECU receives a response signal from the ECUs connected to sub bus 2, the
network gateway ECU recognizes and memorizes that the ECU is connected to sub bus 2. Based on
this memorized data, the network gateway ECU monitors for malfunctions in the ECUs connected to
sub bus 2 when communicating with those ECUs. If the network gateway ECU cannot receive response
signals from the ECUs that have been memorized as those connected to sub bus 2, the network
gateway ECU determines that a malfunction exists.
DTC
NO.
DTC DETECTION CONDITION TROUBLE AREA
U1002
The network gateway ECU cannot receive signals from all
ECUs that have been memorized as those connected to sub
bus 2.
Open or short in sub bus 2
main line or connector
Open or short in sub bus 2
branch line or connector
Network gateway ECU
Blind spot monitor sensor
LH*1
Clearance warning ECU
assembly*2
No. 1 CAN junction terminal
Open or short in CAN No. 3
junction connector
Open or short in CAN No. 4
junction connector
*1: w/ Blind spot monitor system
*2: w/ Intuitive Parking Assist System
HINT:
This diagnosis procedure is for when DTC U1002 is output by the network gateway ECU (Techstream
display: Gateway).
WIRING DIAGRAM
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