COMPONENTS
ILLUSTRATION

On-vehicle InspectionECM Communication Circuit Malfunction (C1203)
DESCRIPTION
The circuit is used to send TRAC and VSC control information from the skid control
ECU (brake actuator assembly) to the ECM, and engine control information from the
ECM to the skid control ECU (brake actuator assembly) through the CAN communication
system.
for 4WD or w/ Rear Diff ...
Fog Light Relay
Inspection
INSPECTION
PROCEDURE
1. INSPECT FOG LIGHT RELAY
(a) Check the resistance.
(1) Using an ohmmeter, measure the resistance between the terminals.
Standard:
Tester Connection
Specified Condition
3-5
10 kΩ or higher
...
ECM Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
ECM Communication Stop Mode
Either condition is met:
Communication stop for "ECM (Engine)" is indicated on the "Communication
Bus Check" screen of the ...