CAN communication circuit inspection (F.A.T.C ↔ A.A.F)
- Ignition "OFF".
- Disconnect A.A.F connector and F.A.T.C connector.
- Measure the resistance between CAN-HIGH terminal of A.A.F harness connector and CAN-HIGH terminal of F.A.T.C harness connector.
- Measure the resistance between CAN-LOW terminal of A.A.F harness connector and CAN-LOW terminal of F.A.T.C harness connector.
Specification : below 1Ω
- Is the measured resistance within specification?
YES
- Check F.A.T.C, A.A.F connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Check for open/short in harness.
- Substitute with a known-good F.A.T.C and check for proper operation. If the problem is corrected, replace F.A.T.C and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.