Test TC-61A - Injector No. 4 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.

Ensure ignition is off. Disconnect connector at injector No. 4.
Injector No. 4 is forth injector back from front (timing belt end) of engine.
Using external ohmmeter, check resistance between electrical terminals on injector No. 4. If resistance is 10-16 ohms, go to next step. If resistance is not 10-16 ohms, replace injector. Perform TEST VER-2A.
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 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 from 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.
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.
Using scan tool in ohmmeter mode, check resistance at PCM connector terminal No. 16 (Light Blue/Brown wire). If resistance is less than 5 ohms, repair short to ground in Light Blue/Brown wire between PCM and injector No. 4. Perform TEST VER-2A. If resistance is 5 ohms or more, go to next step.
Using external ohmmeter, check resistance between terminal No. 1 (Light Blue/Brown wire) on connector for injector No. 4 and PCM connector terminal No. 16 (Light Blue/Brown wire). If resistance is 5 ohms or more, repair open circuit in Light Blue/Brown wire between PCM and injector No. 4. Perform TEST VER-2A. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2A.