P052A
P052A, P052B INTAKE VALVE TIMING CONTROL
DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC P052A or P052B is displayed with DTC P0075, perform the trouble diagnosis for DTC P0075.
Refer to "DTC Logic" P0075.
DTC CONFIRMATION PROCEDURE
1. 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)?
YES- GO TO 2.
NO-1 [if it is below 5�C (23�F)]-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 2.
NO-2 [if it is above 45�C (113�F)]-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 2.
2. 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?
YES- Proceed to "Diagnosis Procedure"
NO- INSPECTION END
Diagnosis Procedure
1. INSPECTION START
With CONSULT-GO TO 2.
Without CONSULT-GO TO 3.
2. 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:
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- GO TO 3.
3. CHECK OIL PRESSURE WARNING LAMP
1.Start engine.
2.Check that oil pressure warning lamp is not illuminated.
Is oil pressure warning lamp illuminated?
YES- Refer to "Inspection" Procedures.
NO- GO TO 4.
4. 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?
YES- GO TO 5.
NO- Repair or replace error-detected parts.
5. 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?
YES- GO TO 6.
NO- Repair or replace error-detected parts.
6. CHECK CRANKSHAFT POSITION SENSOR
Perform Component Inspection of the crankshaft position sensor. Refer to "Component Inspection (Crankshaft Position sensor)" .
Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace error-detected parts.
7. CHECK CAMSHAFT POSITION SENSOR
Perform Component Inspection of the camshaft position sensor. Refer to "Component Inspection (Camshaft position sensor)" .
Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace error-detected parts.
8. 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?
YES- GO TO 9.
NO- Remove debris and clean the signal plate of camshaft front end or replace camshaft. Refer to "Removal and Installation" Removal And Installation.
9. 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?
YES- Check timing chain installation. Refer to "Removal and Installation" Removal And Installation.
NO- GO TO 10.
10. CHECK LUBRICATION CIRCUIT
Perform "Inspection of Camshaft Sprocket (INT) Oil Groove". Refer to "Inspection After Installation" Inspection After Installation.
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Clean lubrication line.
Component Inspection (Intake Valve Timing Control Solenoid Valve)
1. 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.
Is the inspection result normal?
YES- GO TO 2.
NO- Replace malfunctioning intake valve timing control solenoid valve. Refer to "Exploded View" Exploded View.
2. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II
1.Remove intake valve timing control solenoid valve. Refer to "Exploded View" 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?
YES- INSPECTION END
NO- Replace malfunctioning intake valve timing control solenoid valve. Refer to "Exploded View" Exploded View.
Component Inspection (Intake Valve Timing Intermediate Lock Control Solenoid Valve)
1. 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.
Is the inspection result normal?
YES- GO TO 2.
NO- Replace malfunctioning intake valve timing intermediate lock control solenoid valve. Refer to EM61, "Exploded View".
2. CHECK INTAKE VALVE TIMING INTERMEDIATE LOCK CONTROL SOLENOID VALVE-II
1.Remove intake valve timing intermediate lock control solenoid valve. Refer to "Exploded View" 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?
YES- INSPECTION END
NO- Replace malfunctioning intake valve timing intermediate lock control solenoid valve. Refer to EM61, "Exploded View".
Component Inspection (Crankshaft Position sensor)
1. 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?
YES- GO TO 2.
NO- Replace crankshaft position sensor (POS). Refer to EM87, "Exploded View".
2. CHECK CRANKSHAFT POSITION SENSOR (POS)-2
Check the resistance between crankshaft position sensor (POS) terminals as per the following.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace crankshaft position sensor (POS). Refer to "Exploded View" Exploded View.
Component Inspection (Camshaft position sensor)
1. 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.
5.Visually check the sensor for chipping.
Is the inspection result normal?
YES- GO TO 2.
NO- Replace camshaft position sensor (PHASE).
2. CHECK CAMSHAFT POSITION SENSOR (PHASE)-2
Check the resistance camshaft position sensor (PHASE) terminals as per the following.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace camshaft position sensor (PHASE). Refer to "Removal and Installation" Removal And Installation.