Confirmation Procedure

If DTC P0451 is displayed with DTC P0452 or P0453, first perform the trouble diagnosis for DTC P0452 or P0453.

Is DTC P0452, or P0453 detected?

YES

Perform diagnosis of applicable.

• DTC P0452: Refer to DTC Description .
• DTC P0453: Refer to DTC Description .

NO

GO TO 2.

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.

GO TO 3.

1. Turn ignition switch ON.
2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES

Proceed to DTC Diagnosis Procedure .

NO

To check malfunction symptom before repair: Refer to Intermittent Incident .

NO

Confirmation after repair: INSPECTION END