Fuel Injector Circuit

FUEL INJECTOR CIRCUIT





1. Check operation of each Fuel Injector.
- While cranking the Engine, check that each Fuel Injector emits an operating sound. Use a sound scope or attach a screwdriver to Injector for this check.

2. Check power supply to Fuel Injector.
a. Turn Ignition Switch to "OFF".
b. Disconnect connector from each Injector.
c. Turn Ignition Switch to "ON".





d. Measure voltage between each Fuel Injector connector terminal and body.

Connector & Terminal / Specified Voltage:
#1 (E7) No. 2 - Body / 10 Volts, minimum
#2 (E17) No. 2 - Body / 1O Volts, minimum
#3 (E8) No. 2 - Body / 10 Volts, minimum
#4 (E18) No. 2 - Body / 1O Volts, minimum

3. Check each Fuel Injector.





- Measure resistance between Fuel Injector terminals.

Terminals / Specified Resistance:
No. 1 - No. 2 / 11 - 12 Ohms.

4. Check harness connector between ECM and each Fuel Injector.
a. Disconnect connector from ECM.





b. Measure resistance of harness connector between ECM and each fuel injector.

Connector & Terminal / Specified Resistance:
(E3O) No. 2 - (E7) No. 1 / 10 Ohms, maximum
(E30) No. 1 - (E17) No. 1 / 10 Ohms, maximum
(E30) No. 13 - (E8) No. 1 / 10 Ohms, maximum
(E30) No. 12 - (E18) No. 1 / 10 Ohms, maximum