Isuzu Trooper (1998-2002 year). Manual - part 420

6E–50

6VE1 3.5 ENGINE DRIVEABILITY AND EMISSIONS

6. Push “Decrease” or “Increase” soft key.

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7. Control EVAP Purge Solenoid and check a data list.
8. If the data list changes, the Purge Solenoid is normal.

Fuel System Test

This test is conducted check Fuel system for proper
operation.
Tech 2 must be used for this test.
Test Procedure:

1. Connect Tech 2 to the vehicle DLC.
2. Ignition SW is “On”.
3. Select F3: Miscellaneous Test in the Application

Menu.

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4. Select F3: Fuel System in the Miscellaneous Menu.

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5. Select F0: Fuel Trim Enable.

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6E–51

6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

6. Push “Disable” or “Enable” soft key.

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7. Control Fuel Trim and check data list.
8. If data list changes, the Fuel Trim is normal.
9. Select F1: Fuel Trim Reset.

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10. Push “Reset” soft key.

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11. Select F2: O2-Loop status.

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12. This test is check the “Closed Loop Status”

performance.

6E–52

6VE1 3.5 ENGINE DRIVEABILITY AND EMISSIONS

13. Push “Open Loop” or “Closed Loop” soft key.

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14. Control O2-Loop and check data list.
15. If data list changes, the O2-Loop is normal.

Instruments Test

This test is conducted check Instruments for proper
operation.
Tech 2 must be used for this test.
Test Procedure:

1. Connect Tech 2 to the vehicle DLC.
2. Ignition SW is “On”.
3. Select F3: Miscellaneous Test in the Application

Menu.

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4. Select F4: Instruments in the Miscellaneous Menu.

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5. Select F0: Fuel Gauge level.

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6E–53

6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

6. Push “Decrease” or “Increase” soft key.

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7. Control Fuel Level and check data list.
8. If data list and Fuel gauge meter changes, Fuel

Gauge level is normal.

9. Select F1: Tachometer Control Test.

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10. Push “Inactive” or “active” soft key.

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11. Control tachometer and data list.

12. If data list and meter changes, the tachometer control

is normal.

EGR Control Test

This test is conducted check EGR valve for proper
operation.
Tech 2 must be used for this test.
Test Procedure:

1. Connect Tech 2 to the vehicle DLC.
2. Run the Engine at idle.
3. Select F3: Miscellaneous Test in the Application

Menu.

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