DTC Confirmation Test (Using Generic Scan Tool)

CAUTION: DO NOT use ECM ground terminals when measuring voltage. Damage to ECM transistor may result. Use engine ground.

NOTE: Use the following test to check overall function of EVAP control system purge flow monitoring. During this test, a DTC may not be confirmed.

NOTE: If a DTC confirmation test has been previously performed, turn ignition off and wait at least 10 seconds before performing next DTC confirmation test.

Lift drive wheels.
Start engine (VDC switch off) and warm it up to normal operating temperature.
Turn ignition off and wait at least 10 seconds.
Restart engine and wait at least 70 seconds.
Measure voltage between engine ground and ECM harness connector F101 terminal No. 60 by backprobing.
Check EVAP control system pressure sensor value at idle speed and note it. Establish and maintain the following conditions for at least one minute:
- Air conditioner switch: ON.
- Headlamp switch: ON.
- Rear window defogger switch: ON.
- Engine speed: About 3000 RPM.
- Gear position: Any position other than "P", "N" or "R".
Verify that EVAP control system pressure sensor value stays 0.1 volt less than the value at idle speed (measured previously) for at least one second. If NG is displayed, go to DIAGNOSTIC PROCEDURE . If OK is displayed, system is okay at this time.