Tacoma

Toyota Tacoma 2015-2018 Brake Workshop Manual

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Last Modified: 11-13-2015 6.6 C Doc ID: RM000001DXG03EX
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster): C1203; ECM
Communication Circuit Malfunction; 2016 MY Tacoma [08/2015 - ]
DTC C1203 ECM Communication Circuit Malfunction
DESCRIPTION
The circuit sends TRAC, A-TRAC and VSC control information from the skid control ECU (master cylinder solenoid)
to the ECM, and engine control information from the ECM to the skid control ECU (master cylinder solenoid) via
the CAN communication system.
DTC
CODE
DTC DETECTION CONDITION TROUBLE AREA
C1203
Information relating to engine drive source or destination stored in
ECM does not match that stored in skid control ECU (master cylinder
solenoid).
CAN communication
system
ECM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK CAN COMMUNICATION SYSTEM
(
a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Select CAN Bus Check from the System Selection Menu screen and follow the prompts on the screen
to inspect the CAN bus
.
OK:
CAN Bus Check indicates no malfunctions in CAN communication.
NG
GO TO CAN COMMUNICATION SYSTEM (HOW TO
PROCEED WITH TROUBLESHOOTING)
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