Toyota Tacoma (2015-2018) Service Manual: How To Troubleshoot Ecu Controlled Systems
Introduction
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General Information
GENERAL INFORMATION
A large number of ECU controlled systems are used in the TOYOTA TACOMA.
In general, ECU controlled systems are considered to be very intricate,
requiring a high lev ...
Other materials:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
VSC System
DTC Code
Detection Item
See page
C1201
Engine Control System Malfunction
C1203
ECM Communication Circuit Malfunction
C120B
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Mechanical System Tests
MECHANICAL SYSTEM TESTS
1. STALL SPEED TEST
HINT:
This test is to check the overall performance of the engine and transmission.
CAUTION:
This test should be done on a paved surface (a surface that is not slippery).
To ensure safety, perform this test in an open and level area tha ...
ECM Communication Circuit Malfunction (C1203)
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
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