Chrysler 2005 Crossfire SRT6 Service Manual page 2155

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(P0171) FUEL SYSTEM 1/1 RICH CONTROL OVER LIMIT (AT LOAD) (CONTINUED)
When Monitored and Set Condition
• When Monitored: With the engine running in closed loop mode, the ambient/battery temperature above -7°C
(20°F), altitude below 2590m (8500 ft). and fuel level greater than 15%.
• Set Condition: If the PCM multiplies short term compensation by long term adaptive and a certain percentage
is exceeded for two trips, the MIL illuminates and a trouble code is stored.
EVAP PURGE SOLENOID OPERATION
O2 SIGNAL CIRCUIT
RESTRICTED FUEL SUPPLY LINE
FUEL PUMP INLET STRAINER PLUGGED
O2 SENSOR GROUND CIRCUIT
MANIFOLD ABSOLUTE PRESSURE SENSOR OPERATION
ENGINE COOLANT TEMPERATURE SENSOR OPERATION
O2 SENSOR
ENGINE MECHANICAL PROBLEM
FUEL FILTER/PRESSURE REGULATOR
POWERTRAIN CONTROL MODULE
For a complete Powertrain Control Module Circuit Diagram, (Refer to 9 - ENGINE - SCHEMATICS AND DIA-
GRAMS).
Diagnostic Test
1.
PRE-DIAGNOSTIC CHECK OUT
Note: Always perform diagnostics with a fully charged battery.
Note: Check connectors — Clean/repair as necessary. Poor pin to
terminal connections can set DTCs.
Note: Check for applicable TSBs related to the problem.
Turn the ignition on.
With the DRB III , read PCM DTCs.
Using the wiring diagram/schematic as a guide, inspect the wiring and
connectors. Repair as necessary.
Perform this procedure prior to symptom diagnosis.
Continue
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ENGINE - ELECTRICAL DIAGNOSTICS 9 - 231
POSSIBLE CAUSES