Chrysler PT Cruiser 2001 Service Manual Supplement page 2654

DRIVEABILITY - GAS
Symptom:
*CHECKING EVAPORATIVE EMISSION SYSTEM
ROLLOVER VALVE
WIRING HARNESS INTERMITTENT
INTERMITTENT LDP MONITOR FAILURE
TEST
1 Start the engine, Allow the engine to reach normal operating temperature.
Note: Engine must be in closed loop.
With the DRBIII , go to Purge Vapors Test. Press 3 to flow.
Note: Short Term Adaptive should change.
Did Short Term Adaptive change?
Yes → Test Complete.
→ Go To 2
No
2 At this time, the conditions required to set a DTC are not present.
Note: Use the Freeze Frame Data to help you duplicate the conditions that
set the DTC. Pay particular attention to the DTC set conditions, such as,
VSS, MAP, ECT, and Load.
Note: Visually inspect the related wiring harness. Look for any chafed,
pierced, pinched, or partially broken wires.
Note: Visually inspect the related wire harness connectors. Look for broken,
bent, pushed out, or corroded terminals.
Note: Refer to any technical service bulletins that may apply.
Perform a wiggle test of the Evap Purge Solenoid wiring while the circuit is actuated
with the DRBIII . Feel for the solenoid to quit actuating. Also watch for the Good
Trip Counter to change to 0.
Were any problems found?
Yes → Repair wiring harness/connectors as necessary.
→ Go To 3
No
3 At this time, the conditions required to set the DTC are not present.
Note: Use the Freeze Frame Data to help you duplicate the conditions that
set the DTC. Pay particular attention to the DTC set conditions, such as,
VSS, MAP, ECT, and Load.
Note: A thorough visual inspection of the Evap system hoses, tubes, and
connections may save time in your diagnosis. Look for any physical damage
or signs of wetness at connections. The strong smell of fuel vapors may aid
diagnosis also.
Note: Refer to any Technical Service Bulletins (TSB's) that may apply.
With the DRBIII in System Tests, perform the LDP Monitor Test. This will force the
PCM to run the LDP Monitor. If the monitor fails, further diagnosis is required to
find faulty component. If the monitor passes, the condition is not present at this time.
Were any problems found?
Yes → Repair as necessary.
→ Go To 4
No
POSSIBLE CAUSES
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
194
APPLICABILITY
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