Lancer Sportback L4-2.4L (4B12) (2010)
Information Bus: Scan Tool Testing and Procedures
Explanation About the Scan Tool (M.U.T.-III) Can Bus Diagnostics
EXPLANATION ABOUT THE SCAN TOOL (M.U.T.-III) CAN BUS DIAGNOSTICS
Scan tool MB991958 CAN bus diagnostics carries out the two checks below automatically, and then displays current condition of the CAN bus lines
according to the check results.
CAN BUS LINE DIAGNOSTIC FLOW
CAN Bus Line Diagnostic Flow
1. Scan tool CAN bus diagnostics
Scan tool MB991958 diagnoses CAN bus lines in accordance with the following strategy.
NOTE: After you determine whether the CAN-C lines are in good condition, then determine whether the CAN-B lines are in good condition.
Then confirm each judgment result on the scan tool screen.
1. Check that the ETACS-ECU sets a diagnostic trouble code.
You can narrow down the points to be diagnosed by confirming an ETACS-ECU diagnostic trouble code.
2. Checking the communication condition of ECUs
Scan tool MB991958 narrows down troubles in circuit by itself. Its strategies are as follows.