Test TC-21A - Injector Control Circuit

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION Directory. For wiring diagram, see appropriate WIRING DIAGRAMS - NON-TURBO article.

Using scan tool, read Diagnostic Trouble Codes (DTCs). Start engine. Allow engine to idle for at least 20 seconds. If scan tool displays any INJECTOR CONTROL CIRCUIT codes with a run/start count of zero, go to step 5). If scan tool does not display any INJECTOR CONTROL CIRCUIT codes with a run/start count of zero, go to next step.
Condition to set trouble code is not present at this time. INJECTOR CONTROL CIRCUIT DTC sets if no inductive kick is sensed .18 milliseconds after injector turn off with no other injectors on. This DTC takes .64-10 seconds to set. Possible causes are: open or shorted injector driver circuit, open injector, open ASD supply voltage at injector or Powertrain Control Failure (PCM) failure. Go to next step.
Inspect all related wiring and connectors and repair as necessary. If no problems were found with wiring and connectors, go to next step. If related wiring and connectors were repaired, perform TEST VER-2A.
With engine idling, wiggle wiring harness from fuel injectors to PCM. If wiggling caused engine to misfire or stall, repair wiring harness as necessary where wiggling caused problem to appear. Perform TEST VER-2A. If wiggling did not cause misfire or stall, see INACTIVE TROUBLE CODE CONDITION . Test is complete. Perform TEST VER-2A.
See INJECTOR TROUBLE CODE table.

INJECTOR TROUBLE CODE TEST