Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION

Automatic Transmission Assembly(for 2gr-fks)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
...
Inspection
INSPECTION
PROCEDURE
1. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below.
Text in Illustration
*a
Component without harness connected
(Headlight Dimme ...
Monitor Drive Pattern
MONITOR DRIVE PATTERN
1. TEST MONITOR DRIVE PATTERN FOR ECT
CAUTION:
Perform this drive pattern on a level surface and strictly observe the posted
speed limits and traffic laws while driving.
HINT:
Performing this drive pattern is one method to simulate the ECM (ECT) malfunction
detection c ...