Component Inspection

Engine

Engine Control - P0270 Cylinder 4-Injector Circuit Low - Component Inspection

Component Inspection

1. Check injector resistance
(1) IG "OFF".
(2) Disconnect injector connector.
(3) Measure resistance between terminal 1 and 2 of injector 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 go to "Verification of Vehicle Repair" procedure.
NO
1) Substitute with a known - good injector and check for proper operation.
If the problem is corrected, replace injector and go to "Verification of Vehicle Repair" procedure.