Confirmation Procedure

PRECONDITIONING
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 11 V or more at idle.

>>

GO TO 2.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
1. Start engine and warm it up to normal operating temperature.
2. Let engine idle for 2 minutes.
3. Check 1st trip DTC.
Is 1st trip DTC detected?

YES>>

Refer to DTC Diagnosis Procedure .

NO-1>>

With CONSULT : GO TO 3.

NO-2>>

With GST: GO TO 7.
CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Select "A/F SEN1 (B1)" in "DATA MONITOR" mode with CONSULT.
3. Check "A/F SEN1 (B1)" indication.
Does the indication fluctuate around 2.2 V?

YES>>

GO TO 4.

NO>>

Refer to DTC Diagnosis Procedure .

PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-I

Select "A/F SEN1 (B1) P1276" (for DTC P2237) of "A/F SEN1" in "DTC WORK SUPPORT" mode with CONSULT.
Touch "START".

When the following conditions are met, "TESTING" will be displayed on the CONSULT screen.

ENG SPEED	1, 000 - 3, 200 RPM
VHCL SPEED SE	More than 64 km/h (40 mph)
B/FUEL SCHDL	1.0 - 8.0 msec
Selector lever	D position

If "TESTING" is not displayed after 20 seconds, retry from step 2.

CAUTION:

Always drive vehicle at a safe speed.

Is "TESTING" displayed on CONSULT screen?

YES>>

GO TO 5.

NO>>

Check A/F sensor 1 function again. GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-II
Release accelerator pedal fully.

NOTE: Never apply brake when releasing the accelerator pedal.

Which does "TESTING" change to?

COMPLETED>>

GO TO 6.

OUT OF CONDITION>>

Retry DTC CONFIRMATION PROCEDURE. GO TO 4.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-III
Touch "SELF-DIAG RESULT".

Which is displayed on CONSULT screen?

YES>>

INSPECTION END

NO>>

Refer to DTC Diagnosis Procedure .
PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B
Component Function Check .

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

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Refer to DTC Diagnosis Procedure .