DTC P130C:00

Pre-ignition detected

DETECTION CONDITION

• Pre-ignition is detected a few times continuously with the engine coolant temperature at 80 °C {176 °F} or more.

Diagnostic support note

• This is a continuous monitor (other).

• The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.

• FREEZE FRAME DATA (Mode 2)/Snapshot data is available.

• DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

• Fuel having octane rating lower than specified fuel is used

• Carbon accumulated in combustion chamber

• PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

Item (definition)

Unit/Condition

Definition

Condition/Specification (Reference)

ECT

°C, °F

Engine coolant temperature (No.1)

• Displays ECT

V

• ECT is 20 °C {68 °F}: Approx. 3.10 V

• ECT is 40 °C {104 °F}: Approx. 2.16 V

• ECT is 60 °C {140 °F}: Approx. 1.40 V

• ECT is 80 °C {176 °F}: Approx. 0.87 V

• ECT is 100 °C {212 °F}: Approx. 0.54 V

STEP

INSPECTION

ACTION

1

• Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?

Yes

Go to the next step.

No

Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then go to the next step.

2

• Verify related Service Bulletins and/or on-line repair information availability.

• Is any related repair information available?

Yes

Perform repair or diagnosis according to the available repair information.

• If the vehicle is not repaired, go to the next step.

No

Go to the next step.

3

• Switch the ignition off.

• Drain the fuel and add the specified fuel.

  (See FUEL DRAINING PROCEDURE [SKYACTIV-G 2.5].)

—

Go to the next step.

4

• Clear the DTC from the PCM memory using the M-MDS.

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

• Perform the following:

• Start the engine and warm it up completely (engine coolant temperature is increased to 80 °C {176 °F} or more).

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

• Wait for 1 min (idle).

• Perform the DTC Reading Procedure.

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

• Is the same DTC present?

Yes

NOTE:

• A malfunction has occurred because carbon has accumulated in combustion chamber.

Overhaul the engine and remove the carbon in the combustion chamber.

Go to the next step.

No

Go to Step 6.

5

• Always reconnect all disconnected connectors.

• Clear the DTC from the PCM memory using the M-MDS.

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

• Perform the following:

• Start the engine and warm it up completely (engine coolant temperature is increased to 80 °C {176 °F} or more).

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

• Wait for 1 min (idle).

• Perform the DTC Reading Procedure.

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

• Is the same DTC present?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the PCM.

  (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

Go to the next step.

No

Go to the next step.

6

• Perform the “AFTER REPAIR PROCEDURE”.

  (See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.5].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

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

No

DTC troubleshooting completed.