Test TC-61A - Injector No. 4 Control Circuit
NOTE:
For connector terminal ID, see CONNECTOR IDENTIFICATION Directory. For wiring diagram, see WIRING DIAGRAMS
article.
- Turn ignition off. Disconnect injector No. 4 connector. Using an external ohmmeter, check resistance across injector No. 4 terminals. If resistance is 10-16 ohms, go to next step. If resistance is not 10-16 ohms, replace injector No. 4. Perform TEST VER-2A.
- Turn ignition on. Using scan tool, actuate ASD relay. Using scan tool in voltmeter mode, check voltage on injector No. 4 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. 16 injector No. 4 driver circuit. See INJECTOR NO. 4 CONNECTOR WIRE IDENTIFICATION table. 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. 4 driver circuit. Perform TEST VER-2A.
- Using an external ohmmeter, check resistance of injector No. 4 driver circuit between injector No. 4 connector and PCM connector terminal No. 16. See INJECTOR NO. 4 CONNECTOR WIRE IDENTIFICATION table. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2A. If resistance is 5 ohms or more, repair open injector No. 4 driver circuit. Perform TEST VER-2A.
INJECTOR NO. 4 CONNECTOR WIRE IDENTIFICATION
| Application | Wire Color |
|---|---|
| Injector No. 4 Driver Circuit | Light Green/Red |