Chrysler Crossfire. Manual - part 583
(P0452) FUEL TANK PRESSURE SENSOR CIRCUIT LOW (CONTINUED)
When Monitored and Set Condition
•
When Monitored: With the engine running at idle speed.
•
Set Condition: Low limit: The Fuel Tank Pressure Sensor voltage is less than 0.1 volt for 10 seconds. High
limit: The Fuel Tank Pressure Sensor voltage is greater than 4.7 volts for 10 seconds. Signal curve: The Fuel
Tank Pressure Sensor Performance code will be set if the signal remains constant.
POSSIBLE CAUSES
FUEL TANK PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO SENSOR GROUND CIRCUIT
FUEL TANK PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO GROUND
5-VOLT SUPPLY SHORT TO SENSOR GROUND CIRCUIT
5-VOLT SUPPLY SHORT TO GROUND
FUEL TANK PRESSURE SENSOR
POWERTRAIN CONTROL MODULE
For a complete Powertrain Control Module Circuit Diagram, (Refer to 9 - ENGINE - SCHEMATICS AND DIA-
GRAMS).
Diagnostic Test
1.
CHECK FOR CURRENT DTC
Turn the ignition on.
With the DRB III
T
, read PCM DTCs.
Is this DTC present?
Yes
>> For complete diagnosis of this DTC, refer to (P0451)
FUEL TANK PRESSURE SENSOR PERFORMANCE.
No
>> Go To 2
2.
INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Note: Check connectors — Clean/repair as necessary. Poor pin to terminal connections can set DTCs. Using
the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the
wires while checking for shorts and open circuits.
Note: Check for any Technical Service Bulletins that may apply.
Were there any problems found?
Yes
>> Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST - VER 2.
No
>> The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for
a possible intermittent condition.
ZH
ENGINE - ELECTRICAL DIAGNOSTICS
9 - 477