Chrysler 300M 2002 Service Manual page 2634

Symptom:
P0499-NVLD CANISTER VENT VALVE SOLENOID CIRCUIT HIGH
When Monitored and Set Condition:
P0499-NVLD CANISTER VENT VALVE SOLENOID CIRCUIT HIGH
When Monitored: Engine Running.
Set Condition: The PCM detects an open in the NVLD Canister vent solenoid circuits.
One trip Fault.
INTERMITTENT CONDITION
NVLD SOLENOID
NVLD SOLENOID CONTROL CIRCUIT SHORT TO BATTERY VOLTAGE
NVLD SOLENOID CONTROL CIRCUIT OPEN
GROUND CIRCUIT OPEN
PCM
TEST
1 Ignition on, engine not running.
With the DRBIII , read DTCs and record the related Freeze Frame data.
Is the Good Trip Counter displayed and equal to zero?
Yes → Go To 2
→ Go To 7
No
2 Turn the ignition off.
Disconnect the NVLD Assembly harness connector.
Measure the resistance of the NVLD Solenoid coil.
Is the resistance between 7.5 to 8.5 ohms?
Yes → Go To 3
→ Replace the NVLD Assembly.
No
3 Turn the ignition off.
Disconnect the NVLD Assembly harness connector.
Disconnect the PCM harness connector.
Using the DRBIII , actuate ASD Relay.
Measure the voltage on the NVLD Solenoid Control circuit in the NVLD Assembly
harness connector.
Is the voltage above 1.0 volt?
Yes → Repair the short to battery voltage in the NVLD Solenoid Control
→ Go To 4
No
POSSIBLE CAUSES
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - NGC
205
APPLICABILITY
All
All
All