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TEST ACTION APPLICABILITY
3Note: Leaving the Gas Cap loose could cause this trouble code to set.
To continue testing you will need Miller Tool Kit #6872A and #8382.
NOTE: The Fuel Tank must have 1/2 tank of fuel to perform this test.
Perform Evaporative System Pressure Pump Self Test that is specified on the tester
cover.
Warning: Verify the vehicle fuel tank contains at least 3 gallons of fuel.
Attach the DRB III to the vehicle.
Turn the Key On.
At: ENGINE SYSTEM TESTS select: LEAK DETECTION PUMP TEST.
Read instructions and then press ENTER.
At: LEAK DETECTION PUMP TEST select #3 HOLD PSI.
At the vacuum hose going to the LDP, attach and apply a continuous vacuum (i.e. 209
Hg).
Remove Gas Cap.
Install 8382 on the Gas Cap and on the vehicle.
Attach the supply hose from 6872A to 8382.
Attach the power source from the 6872A, clip to Battery(+) and ground clip to
Battery(-).
On the 6872A set the Pressure/Hold Valve to Open and set the Vent Valve to Closed.
Turn the timer on and watch the gauge.
When the gauge pressure reaches 14 in. H2O, turn the Pressure/Hold Valve to
Closed.
Turn the timer off. Note the time and pressure.
Did pressure drop more than 6 in. H2O (to 8 inches H2O on the gauge) in two
minutes?All
Ye s®Go To 4
No®Go To 5
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DRIVEABILITY
P-0442 EVAP LEAK MONITOR SMALL LEAK DETECTED ÐContinued
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TEST ACTION APPLICABILITY
4 To continue testing you will need Miller Tool Kit #6872A, #8382 and #6904 Ultrasonic
Leak Detector.
NOTE: The Fuel Tank must have 1/2 tank of fuel to perform this test.
Perform Evaporative System Pressure Pump Self Test that is specified on the tester
cover.
Warning: Verify the vehicle fuel tank contains at least 3 gallons of fuel.
Attach the DRB III to the vehicle.
Turn the Key On.
At: ENGINE SYSTEM TESTS select: LEAK DETECTION PUMP TEST.
Read instructions and then press ENTER.
At: LEAK DETECTION PUMP TEST select #3 HOLD PSI.
At the vacuum hose going to the LDP, attach and apply a continuous vacuum (i.e. 209
Hg).
Remove Gas Cap.
Install 8382 on the Gas Cap and on the vehicle.
Attach the supply hose from 6872A to 8382.
Attach the power source from the 6872A, clip to Battery(+) and ground clip to
Battery(-).
Set Pressure Hold to Open and set Vent to Open.
Turn Pump Timer On.
To prevent noise from interfering with test, move tool #6872 away from vehicle.
Using the Ultrasonic Leak Detector, start listening for leaks at Gas Cap then proceed
to Rollover Valve, Canister, Leak Detection Pump, and Evap Purge Solenoid.
Were any leaks heard with the Ultrasonic Leak Detector?All
Ye s®Repair or replace leaking component.
Perform VERIFICATION TEST VER-6A.
No®Replace Leak Detection Pump.
Perform VERIFICATION TEST VER-6A.
5 At this time, the condition required to set the code is not present.
Using the schematic as a guide, inspect the wiring, connectors and hoses.
Were any problems found?All
Ye s®Repair as necessary.
Perform VERIFICATION TEST VER-6A.
No®Test Complete.
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DRIVEABILITY
P-0442 EVAP LEAK MONITOR SMALL LEAK DETECTED ÐContinued
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TEST ACTION APPLICABILITY
6 To perform this test you will need Miller Tool Kit #6872A and #6922.
Caution: Refer to safety information.
If disconnected, reconnect the Vacuum Connector at the Purge Solenoid.
Perform Evaporative System Pressure Pump Self Test that is specified on the tester
cover.
Connect the Evap Pressure Pump Supply to Gas Cap Adapter and install on vehicle.
Start Engine.
With the DRB, go to LDP SYSTEM TEST and follow instructions on the screen.
Using Pressure Tool #6872A, set Pressure Hold to Open, and set Vent to Closed.
Turn Pump Timer On.
Allow Pressure Pump to build pressure up to at least 149H2O.
Remove hose at Evap Canister that goes to Purge Solenoid.
Did pressure drop when hose was disconnected?All
Ye s®Repair the pinched hose from the Purge Solenoid to the Evap
Canister.
Perform VERIFICATION TEST VER-6A.
No®Go To 7
7 To perform this test you will need Miller Tool Kit #6872A and #6922.
Caution: Refer to safety information.
Perform Evaporative System Pressure Pump Self Test that is specified on the tester
cover.
Connect the Evap Pressure Pump Supply to Gas Cap Adapter and install on vehicle.
Start Engine.
With the DRB, go to LDP SYSTEM TEST and follow instructions on the screen.
Using Pressure Tool #6872A, set Pressure Hold to Open, and set Vent to Closed.
Turn Pump Timer On.
Allow Pressure Pump to build pressure up to at least 149H2O.
Remove hose at Evap Canister that goes to Fuel Tank.
Did pressure drop when hose was disconnected?All
Ye s®Replace the Evaporative Canister.
Perform VERIFICATION TEST VER-6A.
No®Repair the pinched hose from the Gas Tank to the Evap Canister.
Perform VERIFICATION TEST VER-6A.
202
DRIVEABILITY
P-1486 EVAP LEAK MONITOR PINCHED HOSE FOUND ÐContinued
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TEST ACTION APPLICABILITY
12 Ignition Off.
Disconnect the Ignition Coil Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the ASD Relay.
Note: Check connectors - Clean/repair as necessary.
Using a Jumper Wire connect the ASD Relay Output Circuit to Ground at the
Ignition Coil Connector.
With an Ohmmeter mesaure the ASD Output Circuit for resistance to Ground at the
Relay.
Is the resistance below 5.0 ohms?ENGINE - 3.0L V6
Ye s®Go To 13
No®Repair open ASD Relay Output Circuit.
Perform Powetrain Verification Test VER-1A.
13 Ignition Off.
Disconnect the ASD Relay.
Note: Check connectors - Clean/repair as necessary.
Ignition On, Engine Not Running.
With a Voltmeter, measure the Fused B(+) Circuit cavity B in ASD Relay Connector.
Is the voltage above 10 volts?ENGINE - 3.0L V6
Ye s®Replace the Auto Shutdown Relay.
Perform Powertrain Verification Test VER-1A.
No®Repair open Fused B+.
Perform Verification TEST VER-1A
14 Ignition Off.
Remove the Distributor Cap.
Is the Distributor Rotor loose?ENGINE - 3.0L V6
Ye s®Repair loose Distributor Rotor as necessary.
Perform Verification TEST VER-1A
No®Go To 15
15 If there are no potential causes remaining, the Distributor Drive System is assumed
to be defective.
View repair options.ENGINE - 3.0L V6
Repair
Repair the Distributor Drive System.
Perform Powertrain Verification Test VER-1A.
16 Ignition Off.
Disconnect the Spark Plug Cable at Spark Plug #1.
Connect the Cable to a Spark Tester.
Connect the Spark Tester to a good Ground.
Warning: Ensure that there are no Fuel or Fuel vapors present in or near
the Engine compartment before continuing with the test.
While cranking the Engine for 10 seconds, watch for spark.
Is there good spark?ENGINE - 2.0L
and 2.4L I-4 DOHC
Ye s®Refer to Symptom list for further diagnostic tests.
No®Go To 17
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STARTING
* CHECKING THE SECONDARY IGNITION SYSTEM ÐContinued
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