NO.29 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [SKYACTIV-D 2.2]

id0103g1899600

29

A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY

DESCRIPTION

•  A/C compressor magnetic clutch does not disengage.

POSSIBLE CAUSE

•  PCM DTC is stored.

•  A/C relay malfunction

29	A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY
DESCRIPTION	• A/C compressor magnetic clutch does not disengage.
POSSIBLE CAUSE	• PCM DTC is stored. • A/C relay malfunction

Diagnostic Procedure

STEP

INSPECTION

RESULTS

ACTION

1

VERIFY DTC

•  Retrieve the PCM, instrument cluster and climate control unit DTCs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 2.2].)

(See DTC INSPECTION [INSTRUMENT CLUSTER].)

(See DTC DISPLAY [FULL-AUTO AIR CONDITIONER].)

(See DTC DISPLAY [MANUAL AIR CONDITIONER].)

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [SKYACTIV-D 2.2].)

(See DTC TABLE [INSTRUMENT CLUSTER].)

(See DTC TABLE [FULL-AUTO AIR CONDITIONER].)

(See DTC TABLE [MANUAL AIR CONDITIONER].)

No

Go to the next step.

2

INSPECT A/C RELAY

•  Switch the ignition to off.

•  Remove the A/C relay.

•  Inspect the A/C relay.
(See RELAY INSPECTION.)

•  Is the A/C relay normal?

Yes

Go to the next step.

No

Replace the A/C relay, then go to the next step.

3

Verify the test results.

•  If normal, return to the diagnostic index to service any additional symptoms.
(See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-D 2.2].)

•  If a malfunction remains, inspect the related Service Information and perform the repair or diagnosis.

―  If the vehicle is repaired, troubleshooting is completed.

―  If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

STEP	INSPECTION	RESULTS	ACTION
1	VERIFY DTC • Retrieve the PCM, instrument cluster and climate control unit DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 2.2].) (See DTC INSPECTION [INSTRUMENT CLUSTER].) (See DTC DISPLAY [FULL-AUTO AIR CONDITIONER].) (See DTC DISPLAY [MANUAL AIR CONDITIONER].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-D 2.2].) (See DTC TABLE [INSTRUMENT CLUSTER].) (See DTC TABLE [FULL-AUTO AIR CONDITIONER].) (See DTC TABLE [MANUAL AIR CONDITIONER].)
1		No	Go to the next step.
2	INSPECT A/C RELAY • Switch the ignition to off. • Remove the A/C relay. • Inspect the A/C relay. (See RELAY INSPECTION.) • Is the A/C relay normal?	Yes	Go to the next step.
2		No	Replace the A/C relay, then go to the next step.
3	Verify the test results. • If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-D 2.2].) • If a malfunction remains, inspect the related Service Information and perform the repair or diagnosis. ― If the vehicle is repaired, troubleshooting is completed. ― If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)