Confirmation Procedure

If DTC P1233 is displayed with DTC P1238 or P1290, first perform the confirmation procedure (trouble diagnosis) for DTC P1238 or P1290.

Is DTC P1238 or P1290 detected?

YES

Perform diagnosis of applicable.

• DTC P1238: Refer to DTC Description .
• DTC P1290: 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.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11 V when engine is running.

GO TO 3.

1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.

Is DTC P1233 detected?

YES

Proceed to DTC Diagnosis Procedure .

NO

To check malfunction symptom before repair: Refer to Inspection .

NO

Confirmation after repair: INSPECTION END