2

CHECK ENGINE LIGHT ILLUMINATES

DESCRIPTION

• Check engine light illuminates incorrectly.

POSSIBLE CAUSE

• Check engine light illuminates for emission-related concern (DTC is stored in PCM)

• Short to ground in wiring harness between the following terminals:

• Instrument cluster terminal B—Front body control module (FBCM) terminal 2K

• Instrument cluster terminal D—Front body control module (FBCM) terminal 2I

• Front body control module (FBCM) terminal 2P—PCM terminal 2AK

• Front body control module (FBCM) terminal 2N—PCM terminal 2AL

• Open circuit in wiring harness between the following terminals:

• Instrument cluster terminal B—Front body control module (FBCM) terminal 2K

• Instrument cluster terminal D—Front body control module (FBCM) terminal 2I

• Front body control module (FBCM) terminal 2P—PCM terminal 2AK

• Front body control module (FBCM) terminal 2N—PCM terminal 2AL

• Instrument cluster malfunction

NOTE:

• If the check engine light blinks at a steady rate, a misfire condition could possibly exist.

STEP

INSPECTION

RESULTS

ACTION

1

• Retrieve any DTCs using the M-MDS.

  (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.5].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [SKYACTIV-G 2.5].)

No

Go to the next step.

2

• Inspect the instrument cluster.

  (See INSTRUMENT CLUSTER INSPECTION.)

• Is there any malfunction?

Yes

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

No

Inspect for a short or open circuit between the following terminals:

• Instrument cluster terminal B—Front body control module (FBCM) terminal 2K

• Instrument cluster terminal D—Front body control module (FBCM) terminal 2I

• Front body control module (FBCM) terminal 2P—PCM terminal 2AK

• Front body control module (FBCM) terminal 2N—PCM terminal 2AL

Repair or replace the wiring harness if necessary.

3

Verify the test results.

• If normal, return to the diagnostic index to service any additional symptoms.

  (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.5].)

• If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.

• If the vehicle is repaired, troubleshooting is completed.

• If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.