PFI Injector Circuit
Disconnect all injector harness connectors. Using digital ohmmeter, check resistance across terminals of each injector. See INDIVIDUAL PFI INJECTOR RESISTANCE table. Disconnect injector bank harness connector and check resistance of injector bank. See PFI INJECTOR BANK RESISTANCE table. Repair wiring or any injector not within specification.
INDIVIDUAL PFI INJECTOR RESISTANCE
| Engine | Ohms | |
|---|---|---|
| 1.9L | 2.0-2.7 | |
| 2.2L | ||
| Non-Turbo | 12-16 | |
| Turbo | 11-15 | |
| 2.3L OHC | 15.0-19.0 | |
| 2.3L HSC | 13.5-16.0 | |
| 2.3L HSO | 13.5-16.0 | |
| 3.0L | 15.0-18.0 | |
| 3.0L SHO | 13.5-16.0 | |
| 3.8L PFI | 13.5-16.0 | |
| 5.0L | ||
| Mustang | 1.5-19 | |
| All Other Models | 13.5-19 | |
PFI INJECTOR BANK RESISTANCE
| Engine | Ohms | ||
|---|---|---|---|
| 1.9L PFI | 1.2-1.8 | ||
| 2.2L & 2.2L Turbo | (1) | ||
| 2.3L OHC | 7.0-9.5 | ||
| 2.3L HSC | 7.0-9.5 | ||
| 2.3L HSO | 7.0-9.5 | ||
| 3.0L | 5.0-6.5 | ||
| 3.0L SHO | (1) | ||
| 5.0L | (1) | ||
|
|||
NOTE:
For further component testing and information, see appropriate TESTS W/CODES
article in this section.