Procedure Malfunction B

Use this procedure to check the overall function of the A/F sensor 1 circuit. During this check, a 1st trip DTC might not be confirmed.

With GST

1. Start engine and warm it up to normal operating temperature.
2. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in the suitable gear position.
3. Set selector lever to D position (CVT) or 5th position (M/T), then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (31 MPH).
   NOTE: Never apply brake during releasing the accelerator pedal.
4. Repeat steps  2 and 3 for five times.
5. Stop the vehicle and turn ignition switch OFF.
6. Wait at least 10 seconds and restart engine.
7. Repeat steps  2 and 3 for 5 times.
8. Stop the vehicle and connect GST to the vehicle.
9. Check that no 1st trip DTC is displayed.

If 1st trip DTC is displayed, go to "DIAGNOSIS PROCEDURE ".