Chrysler Crossfire. Manual — part 633
(P2561) HVAC CONTROL MODULE REQUESTED MIL ILLUMINATION (CONTINUED)
For a complete A/C-Heater Control Module Circuit Diagram, (Refer to 24 - HEATING & AIR CONDITIONING -
SCHEMATICS AND DIAGRAMS).
Diagnostic Test
1.
DTC PRESENT IN A/C HEATER CONTROL MODULE.
This is an informational DTC letting you know that a DTC(s) is stored
in the A/C Heater Control Module.
Using the DRB III
T
, read the A/C-Heater Control Module DTC(s) and
refer to the A/C Heater Control Module Category to perform the appro-
priate symptom.
Erase this DTC from the PCM after all A/C-Heater Control Module
DTC(s) have been repaired.
PCM Diagnostic Information complete.
Continue
Test Complete.
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ENGINE - ELECTRICAL DIAGNOSTICS
9 - 677
*CHECKING FUEL DELIVERY
9 - 678
ENGINE - ELECTRICAL DIAGNOSTICS
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*CHECKING FUEL DELIVERY (CONTINUED)
POSSIBLE CAUSES
FUEL PUMP INLET STRAINER PLUGGED
RESTRICTED FUEL SUPPLY LINE
FUEL FILTER/FUEL PRESSURE REGULATOR
FUEL PUMP RELAY OUTPUT CIRCUIT OPEN
FUEL PUMP RELAY OUTPUT CIRCUIT SHORT TO GROUND
FUEL PUMP GROUND CIRCUIT OPEN
RELAY CONTROL MODULE
FUEL PUMP
For a complete Powertrain Control Module Circuit Diagram, (Refer to 9 - ENGINE - SCHEMATICS AND DIA-
GRAMS).
Diagnostic Test
1.
FUEL PUMP OPERATION
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRES-
SURE EVEN WITH THE ENGINE OFF. BEFORE TESTING OR SER-
VICING ANY FUEL SYSTEM HOSE, FITTING OR LINE, THE FUEL
SYSTEM PRESSURE MUST BE RELEASED.
Verify that the fuel tank is not empty before continuing.
Turn the ignition on.
With the DRB III
T
, actuate the Fuel Pump.
Listen for fuel pump operation.
Stop All Actuations.
Did the Fuel Pump operate?
Yes
>> Go To 2
No
>> Go To 4
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ENGINE - ELECTRICAL DIAGNOSTICS
9 - 679
*CHECKING FUEL DELIVERY (CONTINUED)
2.
FUEL PRESSURE
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRES-
SURE EVEN WITH THE ENGINE OFF. BEFORE TESTING OR SER-
VICING ANY FUEL SYSTEM HOSE, FITTING OR LINE, THE FUEL
SYSTEM PRESSURE MUST BE RELEASED.
Turn the ignition off.
Install a fuel pressure gauge at the engine.
Turn the ignition on.
With the DRB III
T
, actuate the Fuel Pump and observe the fuel pres-
sure gauge.
Note: Fuel pressure specification is 3.7 to 4.2 bar (54 to 61 psi).
Stop All Actuations.
Choose a conclusion that best matches your fuel pressure
reading.
Below Specification
Go To 3
Within Specification
Test Complete.
Above Specification
Replace the Fuel Filter/Fuel Pressure Regulator. (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/FUEL
FILTER - REMOVAL).
Perform POWERTRAIN VERIFICATION TEST - VER 3.
3.
CHECKING FUEL PUMP INLET STRAINER
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRESSURE EVEN WITH THE ENGINE OFF. BEFORE
TESTING OR SERVICING ANY FUEL SYSTEM HOSE, FITTING OR LINE, THE FUEL SYSTEM PRESSURE
MUST BE RELEASED.
Turn the ignition off.
Remove and inspect the Fuel Pump Inlet Strainer.
Is the Fuel Strainer plugged?
Yes
>> Replace the Fuel Pump Inlet Strainer. (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/FUEL FILTER -
REMOVAL).
Perform POWERTRAIN VERIFICATION TEST - VER 3.
No
>> Check the fuel supply line for a restriction. Repair as necessary. If OK, replace the Fuel Pump. (Refer
to 14 - FUEL SYSTEM/FUEL DELIVERY/FUEL PUMP - REMOVAL).
Perform POWERTRAIN VERIFICATION TEST - VER 3.
9 - 680
ENGINE - ELECTRICAL DIAGNOSTICS
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