Diagnostic Aids
Perform this test when directed by QUICK TEST. PCM uses adaptive fuel logic to compensate for normal variances in fuel system components. If fuel system appears to be too rich or too lean, adaptive fuel will make appropriate shift in fuel delivery calculations to compensate.
FUEL PRESSURE SPECIFICATIONS (1)
| Engine | KOER: psi (kPa) | KOEO: psi (kPa) | ||
|---|---|---|---|---|
| 3.0L | 30-45 (210-310) | 35-45 (240-310) | ||
| 2.3L | 45-60 (310-415) | 50-60 (345-415) | ||
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CIRCUIT TEST HA ACRONYMS
| Acronym | Definition |
|---|---|
| HO2S | Heated Oxygen Sensor |
| KAM | Keep-Alive Memory |
| SFI | Sequential Multiport Fuel Injection |
1) Continuous Memory Codes 181, 183, 189 & 192 These codes identify a lean fuel condition resulting in adaptive fuel strategy enriching fuel system to compensate.
- Code 183: Indicates single right or rear HO2S detected a problem and adaptive fuel rich limit has been reached at idle.
- Code 192: Indicates left or front HO2S detected a problem and adaptive fuel rich limit has been reached at idle.
- Code 181: Indicates single right or rear HO2S detected a problem and adaptive fuel rich limit has been reached.
- Code 189: Indicates left or front HO2S detected a problem and adaptive fuel rich limit has been reached.