Chrysler PT Cruiser 2001 Service Manual Supplement page 2636

DRIVEABILITY - GAS
P1486-EVAP LEAK MONITOR PINCHED HOSE FOUND —
TEST
2 To continue testing you will need Miller Tools #6872A (Evap System Pressure Pump)
and #8382 (Gas Cap Tester/Adapter).
Warning: The test equipment is designed to be used to pressurize the
vehicles Evaporative System only. Using the equipment in a manner for
which it was not designed could be harmful.
Warning: Keep lighted cigarettes, sparks, flames, and other ignition sources
away from the test area to prevent the ignition of explosive gases. Keep the
test area well ventilated.
Note: The fuel tank should have between 20% & 80% of full to properly test
the Evap system.
Attach the power source clip (red) of Miller Tool #6872A to Battery (+) and the ground
clip (black) to Battery (-).
Perform the Evaporative System Pressure Pump self test that is specified on the
tester cover.
Remove gas cap and install Miller Tool #8382 on vehicle. Install gas cap to Miller Tool
#8382. Attach the pressure supply hose from Miller Tool #6872A to the fitting on
#8382.
Disconnect the vacuum supply hose at the Leak Detection Pump. Connect and apply
a continuous vacuum supply (i.e. 20 Hg) to the Leak Detection Pump. A vacuum
pump such as an A/C recovery unit works well.
Ignition on, engine not running.
With the DRBIII in System Tests, select Leak Detect Pump Test. Read instructions
and then press Enter. Select: #3 - HOLD PSI.
On Miller Tool #6872A, set the Pressure/Hold switch to Open and set the Vent switch
to Closed. Turn the pump timer On and watch the gauge.
When the gauge pressure reaches 14 H2O, turn the Pressure/Hold Valve to Closed.
Turn the pump timer off.
Disconnect the hose at the EVAP Canister that goes to the Fuel Tank.
Did the pressure drop when the hose was disconnected?
Yes → Go To 3
→ Repair obstruction in the EVAP system between the EVAP
No
3 Note: All previously disconnected hose(s) reconnected.
Re-pressurize the EVAP System. On Miller Tool #6872A, set the Pressure/Hold
switch to Open and set the Vent switch to Closed. Turn the pump timer On and watch
the gauge.
When the gauge pressure reaches 14 H2O, turn the Pressure/Hold Valve to Closed.
Turn the pump timer off.
Disconnect the LDP Pressure hose at the EVAP Canister. The LDP Pressure hose is
the hose that connects the Evap Canister to the Leak Detection Pump.
Did the pressure drop when the hose was disconnected?
Yes → Go To 4
→ Replace the EVAP Canister.
No
ACTION
Canister and the fuel tank.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
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Continued
APPLICABILITY
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