B-CAN Communication Line Inspection
| Item | Normal Value | Prerequisite Condition | Probe(+) | Probe(-) |
|---|---|---|---|---|
| CAN communication line (short to power): Voltage | Approx. 0V | 1. Ignition: OFF 2. All Module (Unit): Disconnected |
WPC CAN High terminal | Chassis ground |
| WPC CAN Low terminal | Chassis ground | |||
| CAN communication line (short to power): Resistance | ∞ (Infinite)Ω | 1. Ignition: OFF 2. All Module (Unit): Disconnected |
WPC CAN High terminal | Chassis ground |
| WPC CAN Low terminal | Chassis ground | |||
| CAN communication line (Open/Short): Oscilloscope | Refer to Fig 1 below | 1. Ignition: OFF 2. All Module (Unit): Connected |
WPC CAN High terminal | WPC CAN Low terminal |
- Is the measured value within specification?
YES
- Fault might be intermittent and caused either by poor contact in connectors or wiring harness, or it has been repaired and control module memory is not cleared yet. Thoroughly check terminal of battery, all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
- Replace the WPC with an usable one and check for proper operation. If it works properly, put the component in place. Then, go to "VERIFICATION OF VEHICLE REPAIR ".
NO
- Repair open or short in B-CAN communication circuit and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.