Lancer L4-2.4L (4B12) (2009)
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1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Diagnose CAN bus lines, and check if the scan tool screen is as shown in the illustration.
Q: Does the scan tool screen correspond to the illustration?
YES : The trouble can be an intermittent malfunction.
NO : Replace the ETACS-ECU.
Diagnostic Item 14
DIAGNOSTIC ITEM 14: Diagnose the lines between joint connector (CAN2) and joint connector CAN3).
CAUTION: When servicing a CAN bus line, ground yourself by touching a metal object such as an unpainted water pipe. If you fail to do so, a
component connected to the CAN bus line may be damaged.
