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Home >> Dodge and Ram >> 1995 >> Intrepid Base, 3.5 F >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.3L >> Test TC-29A >> Injector Control Circuits (DTC 27)
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Injector Control Circuits (DTC 27)

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION. For wiring diagram, see WIRING DIAGRAMS - 3.3L article in ENGINE PERFORMANCE. After each repair, perform TEST VER-2  .
  1. Using scan tool, erase trouble codes. Attempt to start engine. If necessary, crank engine for at least 10 seconds. Using scan tool, read trouble codes. Allow engine to idle for at least 20 seconds. If scan tool displays any injector control circuit codes, see INJECTOR CONTROL CIRCUIT CODES  table and perform corresponding test. If scan tool does not display any injector control circuit codes, go to next step.
    INJECTOR CONTROL CIRCUIT CODES

    Scan Tool Display 3.3L Engine Test No.
    CONTROL CIRCUIT
    INJECTOR NO. 1 TC-29B 
    INJECTOR NO. 2 TC-30A 
    INJECTOR NO. 3 TC-31A 
    INJECTOR NO. 4 TC-32A 
    INJECTOR NO. 5 TC-33A 
    INJECTOR NO. 6 TC-34A 
  2. At this time, the condition required to set trouble code is not present. INJECTOR CONTROL CIRCUIT trouble code sets when Powertrain Control Module (PCM) does not detect injector turn off edge when expected. Possible causes are: open or shorted injector control circuit, open power supply, open injector, or failed driver in PCM.
  3. Inspect wiring and connectors. Repair as required. If wiring and connectors are okay, start engine. Wiggle wiring harness and connectors from injector to PCM. If engine misses or stalls when wiring harness and connectors are wiggled, repair area where wiggling caused problem to appear. If engine does not miss or stall when wiring harness and connectors are wiggled, see INACTIVE TROUBLE CODE CONDITION  . Test is complete.
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