NO.38 OIL PRESSURE WARNING LIGHT ILLUMINATES [SKYACTIV-G 2.0]

id0103e6980400

30

OIL PRESSURE WARNING LIGHT ILLUMINATES
DESCRIPTION
•  Oil pressure warning light illuminates incorrectly.
POSSIBLE CAUSE
•  Engine oil malfunction
―  Engine oil deterioration
―  Fuel penetration into engine oil
•  Oil pressure switch malfunction
•  Engine oil solenoid valve malfunction
•  Oil strainer malfunction
•  Oil pump malfunction
•  Short to ground in wiring harness between the following terminals:
―  Instrument cluster terminal 2D—PCM terminal 2AL
―  Instrument cluster terminal 2B—PCM terminal 2AK
•  Open circuit in wiring harness between the following terminals:
―  Instrument cluster terminal 2D—PCM terminal 2AL
―  Instrument cluster terminal 2B—PCM terminal 2AK
•  Instrument cluster malfunction

Diagnostic Procedure

STEP

INSPECTION

RESULTS

ACTION
1
INSPECT ENGINE OIL LEVEL
•  Inspect the engine oil level.
•  Is there any malfunction?
Yes
Engine oil level is below L:
•  Add genuine motor oil, then go to the next step.
Engine oil level is above F:
•  Replace the engine oil, then go to the next step. (penetration of fuel into engine oil can be considered)
No
Go to Step 3.
2
VERIFY IF OIL PRESSURE WARNING LIGHT ILLUMINATES
•  Verify that the oil pressure warning light illuminates.
•  Does the oil pressure warning light illuminate?
Yes
Go to the next step.
No
Symptom troubleshooting is completed.
3
VERIFY PCM DTC
•  Retrieve any DTCs using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [SKYACTIV-G 2.0].)
No
Go to the next step.
4
VERIFY ENGINE OIL PRESSURE
•  Inspect the engine oil pressure.
•  Is there any malfunction?
Yes
Go to Step 6.
No
Go to the next step.
5
INSPECT OIL PRESSURE SWITCH
•  Inspect the oil pressure switch.
•  Is there any malfunction?
Yes
Replace the oil pressure switch.
No
Go to Step 9.
6
INSPECT ENGINE OIL SOLENOID VALVE
•  Inspect the engine oil solenoid valve.
•  Is there any malfunction?
Yes
Replace the engine oil solenoid valve.
(See ENGINE OIL SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
No
Go to the next step.
7
INSPECT OIL STRAINER
•  Inspect the oil strainer.
•  Is there any malfunction?
Yes
Replace the oil strainer.
(See OIL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
No
Go to the next step.
8
INSPECT WIRING HARNESS OF PCM CIRCUIT
•  Inspect for short or open circuit between the following terminals:
―  Instrument cluster terminal 2D—PCM terminal 2AL
―  Instrument cluster terminal 2B—PCM terminal 2AK
•  Is there any malfunction?
Yes
Repair or replace the suspected wiring harness.
No
Inspect the instrument cluster.
(See INSTRUMENT CLUSTER INSPECTION.)
•  If there is any malfunction:
―  Repair or replace the malfunctioning part according to the inspection results.
•  If there is no malfunction:
―  Replace the oil pump.
9
Verify the test results.
•  If normal, return to the diagnostic index to service any additional symptoms.
•  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.