Inspection Procedure For Resistance Measurement
When measuring impedance, it is generally necessary to disconnect the circuit being tested from the power supply before hand. The vehicle's battery should therefore be disconnected and wait about four minutes to allow all capacitors in the system to discharge.
Inspection procedure for resistance test:
- The CAN bus must be disconnected from the power supply.
- The measurement is taken between the CAN High and CAN Low leads.
- The measurement recorded may differ from the specified levels by a few ohms.