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 (Mode 2)/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 15 A fuse and intake CMP sensor terminal C

• ENGINE1 15 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

• Electric variable valve timing mechanism not installed correctly

• Loose timing chain or improper valve timing

• Loose camshaft sprocket lock bolt

• Loose crankshaft pulley lock bolt

• 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 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 13.

No

Go to the next step.

4

• Verify that the intake CMP sensor connector is disconnected.

• Switch the ignition ON (engine off).

• 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 15 A fuse.

• If the fuse is blown out:

• Refer to the wiring diagram and verify whether or not there is a common connector between ENGINE1 15 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 13.

5

• 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

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 2.5].)

Go to Step 13.

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 13.

No

Go to the next step.

7

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

• Switch the ignition ON (engine off).

• 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 13.

8

• 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 13.

No

Go to the next step.

9

• 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 13.

10

• Inspect the intake CMP sensor.

  (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [SKYACTIV-G 2.5].)

• Is there any malfunction?

Yes

Replace the intake CMP sensor, then go to Step 13.

(See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

No

Go to the next step.

11

• 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 13.

No

Go to the next step.

12

• Verify the valve timing mechanism installation for the following parts:

• Timing chain

• Camshaft sprocket lock bolt

• Crankshaft pulley lock bolt

• Is the valve timing mechanism installed correctly?

Yes

Go to the next step.

No

Reinstall the following parts correctly, then go to the next step.

• Timing chain

• Camshaft sprocket

• Crankshaft pulley

13

• 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 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.

14

• 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.