DTC P0340:00 [PCM (SKYACTIV-G 2.5T)]

id0102s8703700

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	• Sets the electric variable valve timing control to the maximum cam retard mode. • Inhibits traction control.
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 1V • PCM connector or terminals malfunction • Short to power supply in wiring harness between intake CMP sensor terminal A and PCM terminal 1V • 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 1V ? Intake CMP sensor terminal B—PCM terminal 1S • 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

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION 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 INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	VERIFY RELATED PENDING CODE AND/OR DTC • 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 2.5T)].) • 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 2.5T)].)
3		No	Go to the next step.
4	INSPECT INTAKE CMP SENSOR CONNECTOR CONDITION • 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.
4		No	Go to the next step.
5	INSPECT INTAKE CMP SENSOR POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT • 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.
5		No	Inspect the ENGINE1 15 A fuse. • If the fuse is blown: ? 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 14.
6	INSPECT INTAKE CMP SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND • 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 1V. 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 2.5T].) Go to Step 14.
6		No	Go to the next step.
7	INSPECT PCM CONNECTOR CONDITION • 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.
7		No	Go to the next step.
8	INSPECT INTAKE CMP SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • 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.
8		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 1V. 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	INSPECT INTAKE CMP SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER • 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 1V • Intake CMP sensor terminal B—PCM terminal 1S 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.
9		No	Go to the next step.
10	INSPECT INTAKE CMP SENSOR CIRCUIT FOR OPEN CIRCUIT • 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 1V ? Intake CMP sensor terminal B—PCM terminal 1S • Is there continuity?	Yes	Go to the next step.
10		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 1V • Intake CMP sensor terminal B—PCM terminal 1S 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 INTAKE CMP SENSOR • Inspect the intake CMP sensor. (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [SKYACTIV-G 2.5T].) • Is there any malfunction?	Yes	Replace the intake CMP sensor, then go to Step 14. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
11		No	Go to the next step.
12	INSPECT CKP SENSOR CONNECTOR CONDITION • 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.
12		No	Go to the next step.
13	VERIFY ASSEMBLY CONDITION OF TIMING CHAIN • Verify the condition of the timing chain assembly (intake valve timing, looseness, jumping). (See TIMING CHAIN REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].) • 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 2.5T].)
13		No	Go to the next step.
14	VERIFY DTC TROUBLESHOOTING COMPLETED • Always reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC [PCM (SKYACTIV-G 2.5T)].) • Start the engine and race it. • Perform the KOER self test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-G 2.5T)].) • 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 2.5T].) Go to the next step.
14		No	Go to the next step.
15	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-G 2.5T)].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-G 2.5T)].)
15		No	DTC troubleshooting completed.