Matrix FWD L4-1.8L (2ZR-FE) (2010)
7. CHECK TECHSTREAM
(a) Using the Techstream, select "CAN Bus Check" from "System Select".
(b) Observe the screen for approximately 1 minute to check the ECUs and sensors displayed on the screen.
Result:
NOTICE:
*
The systems (ECUs, sensors) that adopt CAN communication vary depending on the vehicle and optional equipment. Check which
systems (ECUs, sensors) are installed on the vehicle See: Diagnosis System.
*
Non-installed ECUs or sensors will not be displayed. Do not mistake them for being in the communication stop mode.
*
The ECUs and sensors that repeatedly appear and disappear from the screen during this check are considered normal. (The
response to the Techstream display are affected by signals output from other ECUs which have an open circuit in either of their
CAN branch wires.)
HINT
*
*1: See the DTC Chart instead of Communication Stop mode Table when some of the ECUs connected to the CAN No. 2 bus are
not displayed on the screen See: Testing and Inspection/Diagnostic Trouble Code Descriptions/CAN Communication System.
*
The ECUs connected to the CAN No. 2 bus are displayed on the screen by the network gateway ECU.
B -- GO TO COMMUNICATION STOP MODE TABLE
C -- GO TO OPEN IN ONE SIDE OF CAN BRANCH WIRE See: Symptom Related Diagnostic Procedures
D -- GO TO DTC CHART U1002 See: Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/U Code
Charts/U1002
E -- GO TO NETWORK GATEWAY ECU COMMUNICATION STOP MODE See: Component Tests and General
Diagnostics/Gateway ECU Communication Stop Mode
A -- Continue to next step.
8. RECHECK DTC
HINT
*
Sometimes CAN communication system DTCs are output, but all the ECUs and sensors connected to the CAN communication
system are displayed on the Techstream. In this case, previous or history DTCs may indicate the cause of the problem.
*
ECUs related to a problem in the CAN bus will store DTCs to indicate communication malfunctions. The communication stop
mode in the CAN bus can be determined by comparing the combination of DTCs that has been set. Refer to the DTC combination
table for the CAN bus.
*
The network gateway ECU will store communication error DTCs when the ECUs connected to the CAN No. 2 bus cannot
communicate, or if a network malfunction occurs.
Result: