Injector Circuit
- Disconnect all injector harness connectors. Using digital ohmmeter, check resistance across terminals of each injector. See appropriate injector resistance table.
- On PFI models, disconnect injector bank harness connector, check resistance of injector bank. See PFI INJECTOR BANK RESISTANCE table. Repair wiring or replace any injector circuit not within specification.
PFI INDIVIDUAL INJECTOR RESISTANCE
| Engine | Ohms | |
|---|---|---|
| 1.9L | 2.0-2.7 | |
| 2.2L | ||
| Non-Turbo | 12-16 | |
| Turbo | 11-15 | |
| 2.3L HSC | 13.5-16.0 | |
| 2.3L HSO | 13.5-16.0 | |
| 2.3L OHC | 15.0-19.0 | |
| 3.0L | 15.0-18.0 | |
| 3.0L SHO | 13.5-16.0 | |
| 3.8L | 13.5-16.0 | |
| 5.0L | ||
| Mustang | 1.5-19 | |
| All Other Models | 13.5-19 | |
PFI INJECTOR BANK RESISTANCE
| Engine | Ohms | ||
|---|---|---|---|
| 1.9L | 1.2-1.8 | ||
| 2.2L & 2.2L Turbo | (1) | ||
| 2.3L HSC | 7.0-9.5 | ||
| 2.3L HSO | 7.0-9.5 | ||
| 2.3L OHC | 7.0-9.5 | ||
| 3.0L | 5.0-6.5 | ||
| 3.0L SHO | (1) | ||
| 3.8L | (1) | ||
| 5.0L | (1) | ||
|
|||
SINGLE INJECTOR RESISTANCE
| Engine | Ohms |
|---|---|
| 1.9L & 2.5L TPI | 1.0-2.0 |
NOTE:
For further component testing and information, see appropriate TESTS W/CODES
article in this section.