Chrysler RG Voyager. Manual — part 570
TEST
ACTION
APPLICABILITY
9
Turn the ignition off.
Disconnect the NVLD electrical harness connector.
Measure the resistance between the (Z1) Ground circuit and ground.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 10
No
→ Repair the open in the (Z1) Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
10
Turn the ignition off.
Disconnect the NVLD electrical harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (K107) NVLD Switch Signal circuit from the NVLD
electrical harness connector to the appropriate terminal of the special tool #8815.
Is the resistance below 5.0 ohms?
All
Yes
→ NOTE: Before continuing, check the PCM harness connector
terminals for corrosion, damage or terminal push out. Repair as
necessary. Replace and program the Powertrain Control Module
in accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Repair the open in the (K107) NVLD Switch Signal Circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
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DRIVEABILITY - NGC
P0440-GENERAL EVAP SYSTEM FAILURE —
Continued
Symptom:
P0441-EVAP PURGE SYSTEM PERFORMANCE
When Monitored and Set Condition:
P0441-EVAP PURGE SYSTEM PERFORMANCE
When Monitored:
Cold start test. Engine Running. Small Leak Test Passed.
Set Condition:
The PCM activates the EVAP Purge solenoid and gradually increases to
maximum flow. During flow, the PCM looks for the NVLD switch to close. If the PCM does
not see the NVLD switch close at maximum flow an error is detected. Two Trip Fault.
POSSIBLE CAUSES
GOOD TRIP EQUAL TO ZERO
INTERMITTENT CONDITION
CHECKING EVAP PURGE SOLENOID FUNCTIONALITY
EVAP PURGE SOLENOID VACUUM SUPPLY
TEST
ACTION
APPLICABILITY
1
NOTE: If any of the following DTCs are set (P0443, P0452, P0453, P0498 or
P0499) diagnose them first before continuing with P0441.
Ignition on, engine not running.
With the DRBIII
t, read DTCs and record the related Freeze Frame data.
Is the Good Trip Counter displayed and equal to zero?
All
Yes
→ Go To 2
No
→ Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
2
NOTE: After disconnecting the Evap Purge vacuum connections, inspect
the lines and solenoid for any signs of contamination or foreign materials.
Using a hand vacuum pump, apply 10 in Hg to
9CAN9 side of the EVAP Purge
Solenoid.
Ignition on, engine not running.
Observe the vacuum gauge.
With the DRBIII
t, actuate the EVAP Purge Solenoid .
Does the vacuum drop when the solenoid is actuated?
All
Yes
→ Go To 3
No
→ Replace the Evap Purge Solenoid.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
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DRIVEABILITY - NGC
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Carefully inspect the Evap Purge Solenoid vacuum supply hose for proper routing.
Check for a pinched or plugged hose from the throttle body to the Purge Solenoid.
Inspect the vacuum port at the throttle body for any damage or plugging.
Were any problems found?
All
Yes
→ Repair the vacuum supply hose/tube as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
164
DRIVEABILITY - NGC
P0441-EVAP PURGE SYSTEM PERFORMANCE —
Continued
Symptom List:
P0442-EVAP SYSTEM MEDIUM LEAK
P0455-EVAP SYSTEM LARGE LEAK
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0442-EVAP SYSTEM MEDIUM
LEAK.
When Monitored and Set Condition:
P0442-EVAP SYSTEM MEDIUM LEAK
When Monitored:
Engine Running. Cold start test. Fuel Level greater than 12%. Ambient
Temperature between 4°C and 32°C (39°F and 89°F) Close Loop fuel system. Test runs
when small leak test is maturing.
Set Condition:
The PCM activates the EVAP Purge Solenoid to pull the EVAP system into
a vacuum to close the NVLD swtich. Once the NVLD swtich is closed, the PCM turns the
EVAP Pugre solenoid off to seal the EVAP system. If the NVLD switch reopens before the
calibrated amount of time for a Medium leak an error is detected. Two Trip Fault.
P0455-EVAP SYSTEM LARGE LEAK
When Monitored:
Engine Running. Cold start test. Fuel Level greater than 12%. Ambient
Temperature between 4°C and 32°C (39°F and 89°F) Close Loop fuel system. Test runs
when small leak test is maturing.
Set Condition:
The PCM activates the EVAP Purge Solenoid to pull the EVAP system into
a vacuum to close the NVLD swtich. Once the NVLD switch is closed, the PCM turns the
EVAP Purge solenoid off to seal the EVAP system. If the NVLD switch reopens before the
calibrated amount of time for a Large leak an error is detected. Two Trip Fault.
POSSIBLE CAUSES
INTERMITTENT CONDITION
VISUAL AND PHYSICAL INSPECTION
EVAPORATIVE EMISSION LEAK DETECTION
EVAP PURGE SOLENOID OPERATION
NVLD SWITCH OPERATION
165
DRIVEABILITY - NGC
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