| 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, a component connected to the CAN bus line may be broken. |
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| caution | A digital multimeter should be used. |
| When measuring resistance value or voltage in CAN bus lines, use a digital multimeter. If not using a digital multimeter, the equipment, which are connected through the CAN communication lines, may be damaged. |
| caution | When measuring the resistance, disconnect the negative 12V starter battery terminal. |
| Disconnect the negative 12V starter battery terminal when measuring the resistance value in the CAN bus line. If you fail to do so, the equipment, which are connected through the CAN communication lines, may be damaged. |
| caution | The test wiring harness should be used. |
| Always use the test harness when measuring the voltage or resistance value at the female connector. If you fail to do so, connectors may be damaged. |
| caution | The strand end of the twist wire should be within 10 cm (4 inches) from the connector. |
| If you repair the wire due to a defective connector or its terminal or harness wire, you should cut the wire so that the strand end of the twist wire should be within 10 cm (4 inches) from the connector as shown. If it exceeds 10 cm (4 inches), twist the wiring harness just like the original twisted wire. If the strand end exceeds 10 cm (4 inches), a communication error may be caused. |
| caution | Strictly observe the specified wiring harness repair procedure. |
| When you repair a CAN bus line, observe the precautions on how to repair the CAN bus line strictly. Refer to  . If a new wire is added or a splice point is modified for the CAN_L or CAN_H line, an error in the CAN communication may be caused. |
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