Chrysler Concorde 2004 Service Manual page 854

DRIVEABILITY - NGC
Symptom:
P0453-NVLD PRESSURE SWITCH SENSE CIRCUIT HIGH
When Monitored and Set Condition:
P0453-NVLD PRESSURE SWITCH SENSE CIRCUIT HIGH
When Monitored: Engine Running.
Set Condition: If the PCM does not see the NVLD swtich close during test, an error is
detected. One Trip Fault.
NVLD SWITCH OPERATION
(K107) NVLD SWITCH SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
(K107) NVLD SWITCH SIGNAL CIRCUIT SHORTED TO (K106) NVLD SOL CONTROL CIRCUIT
NVLD ASSEMBLY
(Z1) GROUND CIRCUIT OPEN
(K107) NVLD SWITCH SIGNAL CIRCUIT OPEN
PCM
TEST
1 Start the engine.
Allow the engine to idle.
Using the DRBIII , perform the NVLD FORCED MONITOR TEST.
Monitor the NVLD Switch state.
NOTE: As the test runs, the NVLD Switch should go from an OPEN state to
a CLOSED state and then return to OPEN when the test is complete.
Did the NVLD Switch operate as described above?
Yes → Refer to the INTERMITTENT CONDITION symptom in the
→ Go To 2
No
2 Turn the ignition off.
Disconnect the NVLD electrical harness connector.
Ignition on, engine not running.
Measure the voltage on the (K107) NVLD Switch Signal circuit in the NVLD
electrical harness connector.
Is the voltage above 5.5 volts?
Yes → Repair short to battery voltage in the (K107) NVLD Switch Signal
→ Go To 3
No
POSSIBLE CAUSES
ACTION
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
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APPLICABILITY
All
All