Nissan Murano: Dtc/circuit Diagnosis / P052a Intake Valve Timing Control

DTC Description

DTC DETECTION LOGIC

There is a gap between the target phase angle and the detected phase angle when the engine is operating in cold conditions.

POSSIBLE CAUSE

DTC P052A

• Crankshaft position sensor

• Camshaft position sensor

• Intake valve timing control solenoid valve

• Intake valve timing intermediate lock control solenoid valve

• Accumulation of debris to the signal pick-up portion of the camshaft

• Timing chain installation

• Foreign matter caught in the intake valve timing control (or intermediate lock control) solenoid valve

DTC P052B

• Crankshaft position sensor

• Camshaft position sensor

• Intake valve timing control solenoid valve

• Intake valve timing intermediate lock control solenoid valve

• Accumulation of debris to the signal pick-up portion of the camshaft

• Timing chain installation

• Foreign matter caught in the intake valve timing control (or intermediate lock control) solenoid valve

DTC P052C

• Crankshaft position sensor

• Camshaft position sensor

• Intake valve timing control solenoid valve

• Intake valve timing intermediate lock control solenoid valve

• Accumulation of debris to the signal pick-up portion of the camshaft

• Timing chain installation

• Foreign matter caught in the intake valve timing control (or intermediate lock control) solenoid valve

DTC P052D

• Crankshaft position sensor

• Camshaft position sensor

• Intake valve timing control solenoid valve

• Intake valve timing intermediate lock control solenoid valve

• Accumulation of debris to the signal pick-up portion of the camshaft

• Timing chain installation

• Foreign matter caught in the intake valve timing control (or intermediate lock control) solenoid valve

FAIL-SAFE

CHECK DTC PRIORITY

If DTC P052A, P052B, P052C and P052D is displayed with DTC P0075 or P0081, first perform the confirmation procedure for DTC UXXXX or P0607.

Is applicable DTC detected?

Perform diagnosis of applicable.

• DTC P0075: Refer to DTC Description.

• DTC P0081: Refer to DTC Description.

GO TO 2.

PRECONDITIONING

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is 10 V or more at idle.

With CONSULT

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

4. Turn ignition switch ON.

5. On the CONSULT screen, select “ENGINE” >> “DATA MONITOR” >> “COOLAN TEMP/S”.

6. Check “COOLAN TEMP/S” indication value.

With GST

Follow the procedure “With CONSULT” above.

Is the value of “COOLAN TEMP/S”−5°C (23°F) and 45°C (113°F)?

GO TO 3.

Warm up the engine until the value of “COOLAN TEMP/S” indicates −5°C (23°F) and 45°C (113°F). And then GO TO 3.

Cool the engine down to the value of “COOLAN TEMP/S” indicates −5°C (23°F) and 45°C (113°F). And then GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE-I

1. Turn ignition switch OFF and wait at 10 seconds.

2. Turn ignition switch ON.

3. Set the selector lever in N range.

4. Start the engine and let it idle for 20 seconds or more.

5. Check 1st trip DTC.

Is 1st trip DTC detected?

Proceed to Diagnosis Procedure

To check malfunction symptom before repair: Refer to Intermittent Incident.

Confirmation after repair: INSPECTION END

CHECK DTC PRIORITY

If DTC P052A, P052B, P052C and P052D is displayed with DTC P0075 or P0081, first perform the confirmation procedure for DTC UXXXX or P0607.

Is applicable DTC detected?

Perform diagnosis of applicable.

• DTC P0075: Refer to DTC Description.

• DTC P0081: Refer to DTC Description.

GO TO 2.

INSPECTION START

GO TO 3.

GO TO 4.

CHECK VTC POSITION

With CONSULT

1. Turn ignition switch ON.

2. On the CONSULT screen, select “ENGINE” >> “DATA MONITOR” >> “COOLAN TEMP/S”.

3. Check that the “COOLAN TEMP/S” indication value is between −5°C (23°F) and 45°C (113°F).

4. Start engine and wait at least 5 seconds.

5. On the CONSULT screen, select “ENGINE” >> “DATA MONITOR” >> “INT/V TIM (B1)”.

6. Check that the data monitor item indicates as follows:

   Item	Value (°CA)
   INT/V TIM (B1)	10 ± 2
   INT/V TIM (B2)	10 ± 2

Is the inspection result normal?

INSPECTION END

GO TO 5.

CHECK OIL PRESSURE WARNING LAMP

1. Start engine.

2. Check that oil pressure warning lamp is not illuminated.

   

Is oil pressure warning lamp illuminated?

Refer to Inspection.

GO TO 6.

CHECK INTAKE VALVE TIMING INTERMEDIATE LOCK CONTROL SOLENOID VALVE

Perform Component Inspection of the intake valve timing intermediate lock control solenoid valve. Refer to Component Inspection (Intake Valve Timing Intermediate Lock Control Solenoid Valve).

Is the inspection result normal?

GO TO 6.

Repair or replace error-detected parts.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Perform Component Inspection of the intake valve timing control solenoid valve. Refer to Component Inspection (Intake Valve Timing Control Solenoid Valve).

Is the inspection result normal?

GO TO 7.

Repair or replace error-detected parts.

CHECK CRANKSHAFT POSITION SENSOR

Perform Component Inspection of the crankshaft position sensor. Refer to Component Inspection (Crankshaft Position sensor).

Is the inspection result normal?

GO TO 8.

Repair or replace error-detected parts.

CHECK CAMSHAFT POSITION SENSOR

Perform Component Inspection of the camshaft position sensor. Refer to Component Inspection (Crankshaft Position sensor).

Is the inspection result normal?

GO TO 9.

Repair or replace error-detected parts.

CHECK CAMSHAFT (INTAKE)

Check the following.

1. Accumulation of debris on the signal plate of camshaft front end

   

2. Chipping signal plate of camshaft front end

Is the inspection result normal?

GO TO 10.

Remove debris and clean the signal plate of camshaft front end or replace camshaft. Refer to Removal and Installation.

CHECK TIMING CHAIN INSTALLATION

Check service records for any recent repairs that may cause timing chain misalignment.

Are there any service records that may cause timing chain misalignment?

Check timing chain installation. Refer to Removal and Installation.

GO TO 11.

CHECK LUBRICATION CIRCUIT

Perform “Inspection of Camshaft Sprocket (INT) Oil Groove”. Refer to Inspection after Installation.

Is the inspection result normal?

INSPECTION END

Clean lubrication line.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-I

1. Turn ignition switch OFF.

2. Disconnect intake valve timing control solenoid valve harness connector.

3. Check resistance between intake valve timing control solenoid valve terminals as per the following.

   Intake valve timing control solenoid valve		Condition		Resistance
   +	−
   Terminal
   1	2	Temperature	20°C (68°F)	7.0 – 7.8 Ω
   1	Ground			∞ (Continuity should not exist)
   2

Is the inspection result normal?

GO TO 2.

Replace malfunctioning intake valve timing control solenoid valve. Refer to Exploded View.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II

1. Remove intake valve timing control solenoid valve. Refer to Exploded View.

2. Provide 12 V DC between intake valve timing control solenoid valve terminals 1 and 2, and then interrupt it. Check that the plunger moves as shown in the figure.

   

   CAUTION:

   Never apply 12 V DC continuously for 5 seconds or more. Doing so may result in damage to the coil in intake valve timing control solenoid valve.

   NOTE:

   Always replace O-ring when intake valve timing control solenoid valve is removed.

Is the inspection result normal?

INSPECTION END

Replace malfunctioning intake valve timing control solenoid valve. Refer to Exploded View.

CHECK INTAKE VALVE TIMING INTERMEDIATE LOCK CONTROL SOLENOID VALVE-I

1. Turn ignition switch OFF.

2. Disconnect intake valve timing intermediate lock control solenoid valve harness connector.

3. Check resistance between intake valve timing intermediate lock control solenoid valve terminals as per the following.

   Intake valve timing intermediate lock control solenoid valve		Condition		Resistance
   +	−
   Terminal
   1	2	Temperature	20°C (68°F)	7.0 – 7.8 Ω
   1	Ground			∞ (Continuity should not exist)
   2

Is the inspection result normal?

GO TO 2.

Replace malfunctioning intake valve timing intermediate lock control solenoid valve. Refer to Exploded View.

CHECK INTAKE VALVE TIMING INTERMEDIATE LOCK CONTROL SOLENOID VALVE-II

1. Remove intake valve timing intermediate lock control solenoid valve. Refer to Exploded View.

2. Provide 12 V DC between intake valve timing intermediate lock control solenoid valve terminals 1 and 2, and then interrupt it. Check that the plunger moves as shown in the figure.

   

   CAUTION:

   Never apply 12 V DC continuously for 5 seconds or more. Doing so may result in damage to the coil in intake valve timing intermediate lock control solenoid valve.

   NOTE:

   Always replace O-ring when intake valve timing intermediate lock control solenoid valve is removed.

Is the inspection result normal?

INSPECTION END

Replace malfunctioning intake valve timing intermediate lock control solenoid valve. Refer to Exploded View.

CHECK CRANKSHAFT POSITION SENSOR (POS)-1

1. Turn ignition switch OFF.

2. Loosen the fixing bolt of the sensor.

3. Disconnect crankshaft position sensor (POS) harness connector.

4. Remove the sensor.

5. Visually check the sensor for chipping.

   

Is the inspection result normal?

GO TO 2.

Replace crankshaft position sensor (POS). Refer to Exploded View.

CHECK CRANKSHAFT POSITION SENSOR (POS)-2

Check the resistance between crankshaft position sensor (POS) terminals as per the following.

Is the inspection result normal?

INSPECTION END

Replace crankshaft position sensor (POS). Refer to Exploded View.

CHECK CAMSHAFT POSITION SENSOR (PHASE)-1

1. Turn ignition switch OFF.

2. Loosen the fixing bolt of the sensor.

3. Disconnect camshaft position sensor (PHASE) harness connector.

4. Remove the sensor. Refer to Exploded View.

5. Visually check the sensor for chipping.

   

Is the inspection result normal?

GO TO 2.

Replace camshaft position sensor (PHASE).

CHECK CAMSHAFT POSITION SENSOR (PHASE)-2

Check the resistance camshaft position sensor (PHASE) terminals as per the following.

Is the inspection result normal?

INSPECTION END

Replace camshaft position sensor (PHASE). Refer to Exploded View.