Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor A (P001600,P001800)

Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual / Engine & Hybrid System / 2gr-fks (engine Control) / Sfi System / Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor A (P001600,P001800)

DESCRIPTION

In the VVT (Variable Valve Timing) system, the appropriate intake valve open and close timing is controlled by the ECM. The ECM performs intake valve control by performing the following: 1) controlling the intake camshaft, cam timing oil control solenoid assembly, camshaft timing gear bolt (camshaft timing oil control valve assembly [for intake camshaft]) and operating the camshaft timing gear; and 2) changing the relative positions of the camshaft and crankshaft.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P001600

Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor A

Deviation in the crankshaft position sensor signal and VVT sensor (for intake camshaft of bank 1) signal (2 trip detection logic).
  • Valve timing
  • Cam timing oil control solenoid assembly (for intake camshaft of bank 1)
  • Camshaft timing gear bolt (camshaft timing oil control valve assembly [for intake camshaft of bank 1])
  • Camshaft timing gear assembly (bank 1)
  • Oil control valve filter (for intake camshaft of bank 1)
  • ECM

Comes on

DTC stored

SAE Code: P0016

P001800

Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor A

Deviation in the crankshaft position sensor signal and VVT sensor (for intake camshaft of bank 2) signal (2 trip detection logic).
  • Valve timing
  • Cam timing oil control solenoid assembly (for intake camshaft of bank 2)
  • Camshaft timing gear bolt (camshaft timing oil control valve assembly [for intake camshaft of bank 2])
  • Camshaft timing gear assembly (bank 2)
  • Oil control valve filter (for intake camshaft of bank 2)
  • ECM

Comes on

DTC stored

SAE Code: P0018

MONITOR DESCRIPTION

To monitor the correlation of the intake camshaft position and crankshaft position, the ECM checks the VVT learned value while the engine is idling. The VVT learned value is calibrated based on the camshaft position and crankshaft position. The intake valve timing is set to the neutral position while the engine is idling. If the VVT learned value is out of the specified range in consecutive driving cycles, the ECM illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs

P0016: Camshaft timing misalignment at idling (for intake camshaft of bank 1)

P0018: Camshaft timing misalignment at idling (for intake camshaft of bank 2)

Required Sensors/Components (Main)

Camshaft timing gear assembly

Required Sensors/Components (Related)

VVT sensor

Crankshaft position sensor

Frequency of Operation

Continuous

Duration

Within 1 minute

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

None

Engine speed

500 to 1000 rpm

TYPICAL MALFUNCTION THRESHOLDS

Either of the following conditions is met

A or B

A. VVT learned value at maximum retarded valve timing

Less than 14.3°CA (Crankshaft Angle)

B. VVT learned value at maximum retarded valve timing

More than 42°CA (Crankshaft Angle)

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here

  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG).
  3. Turn the Techstream on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the engine switch off and wait for at least 30 seconds.
  6. Turn the engine switch on (IG) [A].
  7. Turn the Techstream on.
  8. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
  9. Idle the engine for 5 minutes or more [C].
  10. Enter the following menus: Powertrain / Engine / Trouble Codes [D].
  11. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  12. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  13. Input the DTC: P001600 or P001800.
  14. Check the DTC judgment result.

    Techstream Display

    Description

    NORMAL
    • DTC judgment completed
    • System normal

    ABNORMAL
    • DTC judgment completed
    • System abnormal

    INCOMPLETE
    • DTC judgment not completed
    • Perform driving pattern after confirming DTC enabling conditions

    HINT:

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system has a malfunction.
    • If the judgment result is INCOMPLETE, perform steps [E] through [G].
    • [A] to [D]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.
  15. Drive the vehicle for 2 to 3 minutes [E].

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

  16. Idle the engine for 5 minutes or more [F].
  17. Enter the following menus: Powertrain / Engine / Trouble Codes [G].
  18. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  19. Check the DTC judgment result.

    HINT:

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system has a malfunction.
    • [A] to [G]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

CAUTION / NOTICE / HINT

HINT:

  • Bank 1 refers to the bank that includes the No. 1 cylinder*.

    *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.

  • Bank 2 refers to the bank that does not include the No. 1 cylinder.
  • The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
  • Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.

PERFORM SIMULATION TEST (CHECK FOR ABNORMAL NOISE)

(a) Start the engine.

(b) Check for abnormal noise (rattling sounds) from the camshaft timing gear assembly with the engine idling.

Result

Proceed to

Abnormal noise (rattling sound) from the camshaft timing gear assembly is heard.

A

Abnormal noise (rattling sound) from the camshaft timing gear assembly is not heard.

B

HINT:

  • As the engine speed increases, the camshaft timing gear assembly lock pins will release and the abnormal noise (rattling sound) will disappear.
  • Perform "Inspection After Repair" after replacing the camshaft timing gear assembly.

    Click here

A

REPLACE CAMSHAFT TIMING GEAR BOLT (CAMSHAFT TIMING OIL CONTROL VALVE [FOR INTAKE CAMSHAFT]) AND CAMSHAFT TIMING GEAR ASSEMBLY

B

2.

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P001600 OR P001800)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTC P001600 or P001800 is output

A

DTC P001600 or P001800 and other DTCs are output

B

HINT:

If any DTCs other than P001600 or P001800 are output, troubleshoot those DTCs first.

B

GO TO DTC CHART

A

3.

PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INTAKE VVT OCV DUTY RATIO)

HINT:

If the VVT system can be operated through the Active Test, it can be assumed that the VVT system is operating normally.

(a) Connect the Techstream to the DLC3.

(b) Start the engine.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Active Test / Control the Intake VVT OCV Duty Ratio Bank 1 or Control the Intake VVT OCV Duty Ratio Bank 2 / Data List / Intake VVT Change Angle Bank 1 or Intake VVT Change Angle Bank 2.

Powertrain > Engine > Active Test

Active Test Display

Control the Intake VVT OCV Duty Ratio Bank 1

Data List Display

Intake VVT Change Angle Bank 1
Powertrain > Engine > Active Test

Active Test Display

Control the Intake VVT OCV Duty Ratio Bank 2

Data List Display

Intake VVT Change Angle Bank 2

(e) Perform the Active Test. Check that the displacement angle varies.

OK:

Displacement angle varies.

NG

GO TO STEP 5

OK

4.

CHECK ENGINE MECHANICAL SYSTEM

(a) Check for mechanical malfunctions that affect the valve timing, such as a jumped tooth or stretching of the timing chain.

OK

GO TO STEP 8

NG

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

5.

INSPECT CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (FOR INTAKE CAMSHAFT)

(a) Inspect the cam timing oil control solenoid assembly (for intake camshaft).

  • for Bank 1: Click here
  • for Bank 2: Click here
NG

REPLACE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (FOR INTAKE CAMSHAFT)
OK

6.

INSPECT CAMSHAFT TIMING GEAR BOLT (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY [FOR INTAKE CAMSHAFT])

(a) Inspect the camshaft timing gear bolt (camshaft timing oil control valve assembly [for intake camshaft]).

  • for Bank 1: Click here
  • for Bank 2: Click here
NG

REPLACE CAMSHAFT TIMING GEAR BOLT (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY [FOR INTAKE CAMSHAFT])
OK

7.

INSPECT OIL CONTROL VALVE FILTER (FOR INTAKE CAMSHAFT)

A

for Intake Camshaft of Bank 1

B

for Intake Camshaft of Bank 2

*1

Oil Control Valve Filter

-

-

(a) Remove the oil control valve filter (for intake camshaft of bank 1) or oil control valve filter (for intake camshaft of bank 2).

  • for Bank 1: Click here
  • for Bank 2: Click here

(b) Check that the filter is not clogged.

OK:

Filter is not clogged.

NG

REPLACE OIL CONTROL VALVE FILTER (FOR INTAKE CAMSHAFT)
OK

8.

CHECK WHETHER DTC OUTPUT RECURS (DTC P001600 OR P001800)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(e) Turn the engine switch off and wait for at least 30 seconds.

(f) Turn the engine switch on (IG).

(g) Turn the Techstream on.

(h) Start the engine and warm it up.

(i) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(j) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

(k) Read the pending DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTC P001600 or P001800 is output

B
A

CHECK FOR INTERMITTENT PROBLEMS

B

9.

REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

(a) Replace the camshaft timing gear assembly.

Click here

HINT:

Perform "Inspection After Repair" after replacing the camshaft timing gear assembly.

Click here

NEXT

10.

CHECK WHETHER DTC OUTPUT RECURS (DTC P001600 OR P001800)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(e) Turn the engine switch off and wait for at least 30 seconds.

(f) Turn the engine switch on (IG).

(g) Turn the Techstream on.

(h) Start the engine and warm it up.

(i) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(j) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

(k) Read the pending DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTC P001600 or P001800 is output

B
A

END
B

REPLACE ECM

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