Test TC-21C - Injector No. 1 Control Circuit
NOTE:
For connector terminal ID, see CONNECTOR IDENTIFICATION Directory. For wiring diagram, see appropriate WIRING DIAGRAMS - NON-TURBO
article.
- It may be necessary to remove intake plenum for access to injector connectors. Reconnect injector harness 10-pin connector. Disconnect injector No. 1 connector. Turn ignition on. Using scan tool, actuate ASD relay.
- Using scan tool in voltmeter mode, check voltage on injector No. 1 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. Using an external ohmmeter, check resistance of injector No. 1 driver circuit, Light Green/Black wire, between injector No. 1 connector and PCM connector terminal No. 13. If resistance is less than 5 ohms, replace injector No. 1. Perform TEST VER-2A. If resistance is 5 ohms or more, repair open injector No. 1 driver circuit. Perform TEST VER-2A.