Diesel Data: Automotive Repair

Component Inspection





Engine

Engine Control - P0458 Evaporative Emission System Purge Control Valve Circuit Low - Component Inspection

Component Inspection

1. PCSV Check
(1) Key "OFF".
(2) Disconnect PCSV harness connector.
(3) Measure the resistance between terminal 1 and 2 of PCSV harness connector.(Component side)
A. Specification :









(4) Is the measured resistance within specification?
YES
1) Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and then go to "Verification of Vehicle Repair" procedure.
NO
1) Substitute with a known-good PCSV and check for proper operation. If the problem is corrected, replace PCSV and then go to "Verification of Vehicle Repair" procedure.