Signal Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

■ Check CAN communication line for open

IG "OFF"
Disconnect PCM harness connector.
Measure resistance between High signal terminal and Low signal terminal of PCM harness connector.
Specification: Approx. 110-130 Ω
Is the measured resistance within specification?
YES
- Go to next step below.
NO
- Check for open in wiring related to the CAN communication (PCM, EPS, MTS and vertical resistor at the junction box). Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check CAN communication line for short to ground

IG "OFF"
Disconnect PCM harness connector.
Measure resistance between High signal terminal of PCM harness connector and chassis ground.
Measure resistance between Low signal terminal of PCM harness connector and chassis ground.
Specification: Infinite (above 10 kΩ)
Is the measured resistance within specification?
YES
- Go to next step below.
NO
- Repair CAN communication line for a short to ground. And then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check CAN communication line for short to battery

IG "OFF"
Disconnect the connectors related to the CAN communication.
IG "ON".
Measure voltage between High signal terminal of PCM harness connector and chassis ground.
Measure voltage between Low signal terminal of PCM harness connector and chassis ground.
Specification: Approx. 0 V
Is the measured voltage within specification?
YES
- Go to next step below.
NO
- Repair CAN communication line for a short to battery. And then go to "VERIFICATION OF VEHICLE REPAIR " procedure.