DTC P0327

KS circuit low input

DETECTION CONDITION

• The PCM monitors input signal from the KS when the engine is running. If the input voltage is below 0.01 V the PCM determines that the KS circuit has a malfunction.

Diagnostic support note

• This is a continuous monitor (CCM).

• The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.

• PENDING CODE is available if the PCM detects the above malfunction condition.

• FREEZE FRAME DATA is available.

• The DTC is stored in the PCM memory.

POSSIBLE CAUSE

• KS malfunction

• Connector or terminal malfunction

• Open circuit or short to ground in wiring harness between KS terminal A and PCM terminal 2U

• Open circuit or short to ground in wiring harness between KS terminal B and PCM terminal 2V

• Short KS two wires

• PCM malfunction

STEP

INSPECTION

ACTION

1

• Has FREEZE FRAME DATA been recorded?

Yes

Go to the next step.

No

Record the FREEZE FRAME 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

• Turn the ignition switch off.

• Disconnect the KS connector.

• Inspect for poor connection at terminals A and B (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair the terminal, then go to Step 9.

No

Go to the next step.

4

• Perform KS inspection.

  (See KNOCK SENSOR (KS) INSPECTION [LF])

• Is KS normal?

Yes

Go to the next step.

No

Replace the KS, then go to Step 9.

(See KNOCK SENSOR (KS) REMOVAL/INSTALLATION [LF].)

5

• Inspect for continuity between the following terminals:

• KS terminal A (wiring harness-side) and body ground

• KS terminal B (wiring harness-side) and body ground

• Is there continuity?

Yes

Repair or replace suspected wiring harness, then go to Step 9.

No

Go to the next step.

6

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

• Is there continuity?

Yes

Repair or replace the wiring harness, then go to Step 9.

No

Go to the next step.

7

• Turn the ignition switch off.

• Disconnect the PCM connector.

• Inspect for poor connection at terminals 2U and 2V (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair terminal, then go to Step 9.

No

Go to the next step.

8

• Disconnect the PCM connector.

• Inspect for continuity between the following terminals:

• KS terminal A (wiring harness-side) and PCM terminal 2U (wiring harness-side)

• KS terminal B (wiring harness-side) and PCM terminal 2V (wiring harness-side)

• Is there continuity?

Yes

Go to the next step.

No

Repair or replace the wiring harness, then go to the next step.

9

• Make sure to reconnect all disconnected connectors.

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

• Start the engine.

• Is the same DTC present?

Yes

Replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION [LF].)

No

Go to the next step.

10

• Perform the “AFTER REPAIR PROCEDURE”.

  (See AFTER REPAIR PROCEDURE [LF].)

• Are any DTC present?

Yes

Go to the applicable DTC troubleshooting.

(See DTC TABLE [LF].)

No

Troubleshooting completed.