Test TC-19E - Injector No. 3 Control Circuit
NOTE:
For connector terminal ID, see CONNECTOR IDENTIFICATION Directory. For wiring diagram, see WIRING DIAGRAMS
article.
- Turn ignition off. Disconnect injector No. 3 connector. Using an external ohmmeter, check resistance across injector No. 3 terminals. If resistance is 10-16 ohms, go to next step. If resistance is not 10-16 ohms, replace injector No. 3. Perform TEST VER-2A.
- Turn ignition on. Using scan tool, actuate ASD relay. Using scan tool in voltmeter mode, check voltage on injector No. 3 connector ASD relay output circuit (Black/Red wire). If voltage cycles high and low, go to next step. If voltage does not cycle high and low, repair open ASD relay output circuit. Perform TEST VER-2A.
- Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using scan tool in ohmmeter mode, check resistance of PCM connector terminal No. 7 injector No. 3 driver circuit (Yellow/Dark Green wire). If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on injector No. 3 driver circuit. Perform TEST VER-2A.
- Using an external ohmmeter, check resistance of injector No. 3 driver circuit (Yellow/Dark Green wire) between PCM connector terminal No. 7 and injector No. 3 connector. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2A. If resistance is 5 ohms or more, repair open injector No. 3 driver circuit. Perform TEST VER-2A.