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Home >> Ford >> 1989 >> Tempo Base >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - 2.3L MPFI >> Testing & Diagnosis >> Injector Circuit

Injector Circuit

Disconnect all injector harness connectors. Using digital ohmmeter, check resistance across terminals of each injector. See INDIVIDUAL INJECTOR RESISTANCE  . Disconnect injector bank harness connector, check resistance of injector bank. See INJECTOR BANK RESISTANCE  . Repair wiring or replace any injector circuit not within specification.

INDIVIDUAL INJECTOR RESISTANCE

Engine Ohms (X)
2.3L OHC 15.0-19.0
2.3L HSC 13.5-16.0
2.3L HSO 13.5-16.0
INJECTOR BANK RESISTANCE

Engine Ohms (X)
2.3L OHC 7.0-9.5
2.3L HSC 7.0-9.5
2.3L HSO 7.0-9.5
NOTE: For further component testing and information, see EEC-IV article in COMPUTER CONTROLS sections.