Diagnostic Item 1: CAN main bus line diagnostics: Notes
WARNING: This page is about a different car, the 2006 Mitsubishi Montero. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Before checking CAN bus lines and their interconnected components, "ground" yourself, by touching a metal object such as an unpainted pipe, this will discharge any potentially damaging static that may have built up.
CAUTION:
When measuring resistance value or voltage in CAN bus lines, use a digital multimeter. If not using a digital multimeter, the equipments connected through the CAN bus lines may be damaged.
CAUTION:
Disconnect the negative battery terminal when measuring the resistance value in the CAN bus line. If you fail to do so, the equipments connected through the CAN bus lines may be damaged.
CAUTION:
Always use the test harness when measuring the voltage or resistance at the female connector. If you fail to do so, connectors may be damaged.