DTC P0340:00

Intake CMP sensor circuit problem

DETECTION CONDITION

• The intake CMP sensor input signal pattern, received while the crankshaft rotates 24 times, is incorrect.

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/Snapshot data is available.

• DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

• Set the electric variable valve timing control to the maximum cam retard mode.

POSSIBLE CAUSE

• Intake CMP sensor connector or terminals malfunction

• Short to ground or open circuit in intake CMP sensor power supply circuit

• Short to ground in wiring harness between ENGINE1 10 A fuse and intake CMP sensor terminal C

• ENGINE1 10 A fuse malfunction

• Open circuit in wiring harness between main relay terminal C and intake CMP sensor terminal C

• Short to ground in wiring harness between intake CMP sensor terminal A and PCM terminal 1Y

• PCM connector or terminals malfunction

• Short to power supply in wiring harness between intake CMP sensor terminal A and PCM terminal 1Y

• Intake CMP sensor signal circuit and ground circuit are shorted to each other

• Open circuit in wiring harness between the following terminals:

• Intake CMP sensor terminal A—PCM terminal 1Y

• Intake CMP sensor terminal B—PCM terminal 1AC

• Intake CMP sensor malfunction

• Intake CMP sensor is dirty

• Intake CMP sensor pulse wheel malfunction

• Damage to the detection area of the intake CMP sensor

• CKP sensor connector or terminals malfunction

• Loose timing chain or improper valve timing

• PCM malfunction

STEP

INSPECTION

ACTION

1

NOTE:

• Recording can be facilitated using the screen capture function of the PC.

• Record the FREEZE FRAME DATA/snapshot data on the repair order.

—

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, then ON (engine off).

• Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.

  (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)].)

• Are any other PENDING CODEs and/or DTCs present?

Yes

Go to the applicable PENDING CODE or DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

No

Go to the next step.

4

• Switch the ignition off.

• Disconnect the intake CMP sensor 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 14.

No

Go to the next step.

5

• Verify that the intake CMP sensor connector is disconnected.

• Switch the ignition ON (engine off).

  NOTE:

  • Another DTC may be stored by the PCM detecting an open circuit.

• Measure the voltage at the intake CMP sensor terminal C (wiring harness-side).

• Is the voltage B+?

Yes

Go to the next step.

No

Inspect the ENGINE1 10 A fuse.

• If the fuse is blown:

• Refer to the wiring diagram and verify whether or not there is a common connector between ENGINE1 10 A fuse and intake CMP sensor terminal C.

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.

• Replace the fuse.

• If the fuse is damaged:

• Replace the fuse.

• If the fuse is normal:

• Refer to the wiring diagram and verify whether or not there is a common connector between main relay terminal C and intake CMP sensor terminal C.

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 Step 14.

6

• Verify that the intake CMP sensor connector is disconnected.

• Switch the ignition off.

• Inspect for continuity between intake CMP sensor terminal A (wiring harness-side) and body ground.

• Is there continuity?

Yes

Disconnect the PCM connector and inspect the wiring harness for short to ground.

• 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 intake CMP sensor terminal A and PCM terminal 1Y.

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 2.0].)

Go to Step 14.

No

Go to the next step.

7

• 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 14.

No

Go to the next step.

8

• Verify that the intake CMP sensor and PCM connectors are disconnected.

• Switch the ignition ON (engine off).

  NOTE:

  • Another DTC may be stored by the PCM detecting an open circuit.

• Measure the voltage at the intake CMP sensor terminal A (wiring harness-side).

• Is the voltage 0 V?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between intake CMP sensor terminal A and PCM terminal 1Y.

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 power supply.

• Repair or replace the malfunctioning part.

If there is no common connector:

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

Go to Step 14.

9

• Verify that the intake CMP sensor and PCM connectors are disconnected.

• Switch the ignition off.

• Inspect for continuity between intake CMP sensor 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:

• Intake CMP sensor terminal A—PCM terminal 1Y

• Intake CMP sensor terminal B—PCM terminal 1AC

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 14.

No

Go to the next step.

10

• Verify that the intake CMP sensor and PCM connectors are disconnected.

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

• Intake CMP sensor terminal A—PCM terminal 1Y

• Intake CMP sensor terminal B—PCM terminal 1AC

• 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:

• Intake CMP sensor terminal A—PCM terminal 1Y

• Intake CMP sensor terminal B—PCM terminal 1AC

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 Step 14.

11

• Inspect the intake CMP sensor.

  (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [SKYACTIV-G 2.0].)

• Is there any malfunction?

Yes

Replace the intake CMP sensor, then go to Step 14.

(See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

No

Go to the next step.

12

• Switch the ignition off.

• Disconnect the CKP sensor 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 14.

No

Go to the next step.

13

• Verify the condition of the timing chain assembly (intake valve timing, looseness, jumping).

  (See TIMING CHAIN REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

• Is there any malfunction?

Yes

Repair or replace the malfunctioning part.

Assemble the timing chain using the correct timing, then go to the next step.

(See TIMING CHAIN REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

No

Go to the next step.

14

• Always reconnect all disconnected connectors.

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

  (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-G 2.0)].)

• Start the engine and race it.

• Perform the KOER self test.

  (See KOEO/KOER SELF TEST [PCM (SKYACTIV-G 2.0)].)

• 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 2.0].)

Go to the next step.

No

Go to the next step.

15

• Perform the “AFTER REPAIR PROCEDURE”.

  (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-G 2.0)].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

No

DTC troubleshooting completed.