DTC P0327:00

KS circuit low input

DETECTION CONDITION

• The PCM monitors input signal from the KS. If the input voltage is below specified value for 5 s, the PCM determines that the KS circuit has a malfunction.

Diagnostic support note

• This is a continuous monitor (CCM).

• 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

• Sets the knocking spark retard correction value of the ignition control to the fixed value.

POSSIBLE CAUSE

• KS connector or terminals malfunction

• KS malfunction

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

• KS terminal A—PCM terminal 1H

• KS terminal B—PCM terminal 1D

• PCM connector or terminals malfunction

• KS circuits are shorted to each other

• Open circuit in wiring harness between the following terminals:

• KS terminal A—PCM terminal 1H

• KS terminal B—PCM terminal 1D

• PCM malfunction

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.

• Disconnect the KS connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 9.

No

Go to the next step.

4

• Inspect the KS.

  (See KNOCK SENSOR (KS) INSPECTION [SKYACTIV-G 2.5].)

• Is there any malfunction?

Yes

Replace the KS, then go to Step 9.

(See KNOCK SENSOR (KS) REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

No

Go to the next step.

5

• Verify that the KS connector is disconnected.

• Inspect for continuity between the following terminals (wiring harness-side) and body ground:

• KS terminal A

• KS terminal B

• Is there continuity?

Yes

If the short to ground circuit could be detected in the wiring harness:

• Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• KS terminal A—PCM terminal 1H

• KS terminal B—PCM terminal 1D

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

If the short to ground circuit could not be detected in the wiring harness:

• Replace the PCM (short to ground in the PCM internal circuit).

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

Go to Step 9.

No

Go to the next step.

6

• Disconnect the PCM connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 9.

No

Go to the next step.

7

• Verify that the KS and PCM connectors are disconnected.

• Inspect for continuity between KS terminals A and B (wiring harness-side).

• Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• KS terminal A—PCM terminal 1H

• KS terminal B—PCM terminal 1D

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to each other.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to each other.

Go to Step 9.

No

Go to the next step.

8

• Verify that the KS and PCM connectors are disconnected.

• Inspect for continuity between the following terminals (wiring harness-side):

• KS terminal A—PCM terminal 1H

• KS terminal B—PCM terminal 1D

• Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• KS terminal A—PCM terminal 1H

• KS terminal B—PCM terminal 1D

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to the next step.

9

• Always reconnect all disconnected connectors.

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

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

• Start the engine.

• Perform the KOEO or KOER self test.

  (See KOEO/KOER SELF 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.

10

• 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.