Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Dodge and Ram >> 1996 >> Caravan Base, 2.4 B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.4L >> Trouble Code Tests >> Test TC-21B - Injector No. 1 Control Circuit

Test TC-21B - Injector No. 1 Control Circuit

NOTE: Perform TEST TC-21A before proceeding.
NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION DIRECTORY  . For wiring diagram, see WIRING DIAGRAMS - 2.4L article.
  1. Ensure ignition off. Disconnect connector at injector 1.
    NOTE: Injector No. 1 is first injector back from front of engine.
  2. Using external ohmmeter, check resistance between electrical terminals on injector No. 1. If resistance is 10-16 ohms, go to next step. If resistance is not 10-16 ohms, replace injector. Perform TEST VER-2A.
  3. Turn ignition on. Using scan tool, actuate Auto Shutdown (ASD) relay. Using scan tool in voltmeter mode, check voltage at terminal No. 2 (Dark Green/Orange wire) on connector for injector 1.
  4. If voltage cycles from high voltage to low voltage, go to next step. If voltage does not cycle from high voltage to low voltage, repair open circuit in Dark Green/Orange wire between injector No. 1 and ASD relay. Perform TEST VER-2A. The ASD relay is located in power distribution center at driver's side front corner of engine compartment, near battery.
  5. Turn ignition off. Disconnect connectors from Powertrain Control Module (PCM). The PCM is located between driver's side front fender and power distribution center, near battery.
  6. Using scan tool in ohmmeter mode, check resistance at PCM connector terminal No. 13 (White/Dark Blue wire). If resistance is less than 5 ohms, repair short to ground in White/Dark Blue wire between PCM and injector No. 1. Perform TEST VER-2A. If resistance is 5 ohms or more, go to next step.
  7. Using external ohmmeter, check resistance between terminal No. 1 (White/Dark Blue wire) on connector for injector No. 1 and PCM connector terminal No. 13 (White/Dark Blue wire). If resistance is 5 ohms or more, repair open circuit in White/Dark Blue wire between PCM and injector No. 1. Perform TEST VER-2A. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2A.
scientia non olet · About Mike's Workshop Manuals