Connect scantool to data link connector(DLC)
Engine "ON".
Monitor the "CAN COMMUNICATION SERVICE DATA (ENGINE RPM, VEHICLE SPEED SENSOR, THROTTLE P. SENSOR)" parameters on the scantool
Compare it with referance data as below
Does "CAN BUS LINE DATA " follow the referance data?
YES
Fault is intermittent caused by poor contact in the sensor’s and/or PCM/TCM’s connector or was repaired and PCM/TCM memory was not cleared.And go to Verification of Vehicle Repair procedure.
NO
Replace PCM/TCM and then go to "Verification of Vehicle Repair" procedure.