Toyota Corolla Cross: System Diagram
Toyota Corolla Cross (2022-2025) Service Manual / Power Source & Network / Networking / Lin Communication System / System Diagram
SYSTEM DIAGRAM
DOOR BUS LINES
CERTIFICATION BUS LINES
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System Description
SYSTEM DESCRIPTION
LIN COMMUNICATION SYSTEM DESCRIPTION
The LIN communication system is used for communication between the components
in the tables below. If communication cannot be performed thro
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the LIN communication system.
*: Use the GTS.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
Terminals Of Ecu
TERMINALS OF ECU
CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY
ECU)
*1
Power Distribution Box Assembly
*2
Main Body
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Diagnosis System
DIAGNOSIS SYSTEM OBD II (except Mexico Models)
When troubleshooting OBD II (On-Board Diagnostics) vehicles, the GTS (complying with SAE J1978) must be connected to the DLC3 (Data Link Connector 3) of the vehicle. Various data in the vehicle's ECM (Engine Control Module) can be then read.
OBD II
Front Floor Electrical Key Oscillator Circuit Open (B27A513)
DESCRIPTION The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the No. 1 indoor electrical key antenna assembly (front floor). For the No. 1 indoor electrical key antenna assembly (front floor) to detect when the electrical key transmitter sub-assem
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