Diagnostic Procedure

DTC P0340 DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAS BEEN RECORDED Has FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME on the repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Check for related Service Bulletins and/or online 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.
2		No	Go to the next step.
3	VERIFY CMP SENSOR VOLTAGE Disconnect the CMP sensor connector. Connect a voltmeter between CMP sensor connector terminals B and C (sensor-side). Inspect the voltage in AC range while cranking the engine. Is there any voltage?	Yes	Go to the next step.
3		No	Go to step 10.
4	INSPECT CMP SENSOR CONNECTOR FOR POOR CONNECTION Verify that the CMP sensor connector is connected securely. Is the connector normal?	Yes	Go to the next step.
4		No	Reconnect the connector, then go to Step 15.
5	INSPECT CMP CIRCUIT FOR SHORT TO POWER Turn the ignition switch off. Disconnect the CMP sensor connector. Turn ignition switch to the ON position (Engine off) Measure voltage between the CMP sensor connector terminal B (wiring harness-side) and body ground. Is the voltage B+ ?	Yes	Repair or replace the suspected wiring harness, then go to Step 15.
5		No	Go to the next step.
6	INSPECT CMP CIRCUIT FOR SHORT TO GROUND Inspect for continuity between the following terminal and body ground: CMP sensor connector terminal B (wiring harness-side) CMP sensor connector terminal C (wiring harness-side) Is there continuity?	Yes	Repair or replace the suspected wiring harness, then go to Step 15.
6		No	Go to the next step.
7	INSPECT CMP CIRCUITS FOR SHORT CIRCUIT Inspect for continuity between CMP sensor connector terminals B and C (wiring harness-side). Is there continuity?	Yes	Repair or replace the suspected wiring harness, then go to Step 15.
7		No	Go to the next step.
8	INSPECT PCM CONNECTOR FOR POOR CONNECTION Disconnect the PCM connector. Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc).. Is there any malfunction?	Yes	Repair the terminal, then go to Step 15.
8		No	Go to the next step.
9	INSPECT CMP CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between the following circuits: CMP sensor terminal A (wiring harness-side) and body ground CMP sensor terminal B (wiring harness-side) and PCM terminal 2S (wiring harness-side) CMP sensor terminal C (wiring harness-side) and PCM terminal 2AM (wiring harness-side) Is there continuity?	Yes	Go to Step 11.
9		No	Repair or replace the suspected wiring harness, then go to Step 15.
10	INSPECT CMP SENSOR Turn the ignition switch off. Perform the CMP sensor inspection. (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION ). Is the CMP sensor normal?	Yes	Go to the Step 15.
10		No	Replace the CMP sensor and go to Step 15.
11	VERIFY CKP SENSOR INSTALLATION Verify the CKP sensor installation. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION ). Is the CKP sensor installed correctly?	Yes	Go to the next step.
11		No	Reinstall the CKP sensor and go to Step 15.
12	VERIFY VALVE TIMING MECHANISM INSTALLATION Verify the valve timing mechanism installation for the following parts: Timing chain misinstallation Loose camshaft sprocket lock bolt Loose crankshaft pulley lock bolt Is the valve timing mechanism installed correctly?	Yes	Go to the next step.
12		No	Reinstall the following parts and go to Step 15. Timing chain Camshaft sprocket Crankshaft pulley
13	INSPECT STOPPER PIN MECHANISM (LF, L3) Remove the timing chain. Inspect the stopper pin. (See VARIABLE VALVE TIMING ACTUATOR INSPECTION ). Is the stopper pin mechanism normal?	Yes	Go to the next step.
13		No	Replace the variable valve timing actuator, then go to Step 15.
14	INSPECT ROTOR POSITION (LF, L3) Remove the variable valve timing actuator. (See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION ). Is the rotor position at the maximum valve timing retard?	Yes	VARIABLE VALVE TIMING MECHANISM NORMAL NOTE: This DTC is detected as an intermittent concern. The intermittent concern might be removed by cleaning the variable valve timing mode control function. Go to the next step.
14		No	Replace the variable valve timing actuator, then go to the next step.
15	VERIFY TROUBLESHOOTING OF DTC P0340 COMPLETED Make sure to reconnect all disconnected connectors. Turn ignition switch to the ON position (Engine off). Clear the DTC from the PCM memory using the WDS or equivalent. Start the engine. Access the MAF PID using the WDS or equivalent. NOTE: The MAF PID should indicate 1.95 g/s {0.25 lb/min.} or above during this test Is same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION ).
15		No	Go to the next step.
16	VERIFY AFTER REPAIR PROCEDURE Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE ). Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE ).
16		No	Troubleshooting completed.