- DTC judgment completed
- System normal
| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001HSXH |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [03/2019 - 11/2022] |
| Title: 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: P0011,P0012; Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1); 2020 - 2023 MY Corolla [03/2019 - 11/2022] | ||
|
DTC |
P0011 |
Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1) |
|
DTC |
P0012 |
Camshaft Position "A" - Timing Over-Retarded (Bank 1) |
DESCRIPTION
Refer to DTC P0010.
Click here
![2020 - 2023 MY Corolla [03/2019 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: P0010; Camshaft Position "A" Actuator Circuit (Bank 1)+](/t3Portal/stylegraphics/info.gif)
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P0011 |
Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1) |
Intake valve timing is stuck at a certain value when in the advance range (1 trip detection logic). |
|
Comes on |
DTC stored |
DTC for Mexico Models - Applies |
|
P0012 |
Camshaft Position "A" - Timing Over-Retarded (Bank 1) |
Intake valve timing is stuck at a certain value when in the retard range (2 trip detection logic). |
|
Comes on |
DTC stored |
DTC for Mexico Models - Applies |
MONITOR DESCRIPTION
The ECM optimizes the intake valve timing using the Variable Valve Timing (VVT) system to control the intake camshaft. The VVT system includes the ECM, the camshaft timing oil control valve assembly (for intake camshaft) and the VVT controller (camshaft timing gear assembly). The ECM sends a target duty-cycle control signal to the camshaft timing oil control valve assembly (for intake camshaft). This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the intake camshaft.
If the difference between the target and actual intake valve timing is large, and changes in the actual intake valve timing are small, the ECM interprets this as a VVT controller stuck malfunction and stores a DTC.
Example
-
A DTC is stored when the following conditions are met (except Mexico models):
- It takes 5 seconds or more to change the valve timing by 5°CA.
- After the above condition is met, the camshaft timing oil control valve assembly (for intake camshaft) is forcibly activated for 10 seconds.
-
A DTC P0011 is stored when the following conditions are met (for Mexico models):
- It takes 5 seconds or more to change the valve timing by 5°CA.
- After the above condition is met, the camshaft timing oil control valve assembly (for intake camshaft) is forcibly activated for 9.5 seconds or more.
-
A DTC P0012 is stored when the following conditions are met (for Mexico models):
- It takes 5 seconds or more to change the valve timing by 5°CA.
- After the above condition is met, the camshaft timing oil control valve assembly (for intake camshaft) is forcibly activated for 107 seconds or more.
DTC P0011 (Advanced Cam Timing) is subject to 1 trip detection logic.
DTC P0012 (Retarded Cam Timing) is subject to 2 trip detection logic.
These DTCs indicate that the VVT controller cannot operate properly due to a camshaft timing oil control valve assembly (for intake camshaft) malfunction or the presence of foreign matter in the camshaft timing oil control valve assembly (for intake camshaft).
MONITOR STRATEGY
|
Related DTCs |
P0011: Advanced camshaft timing (for intake camshaft) P0012: Retarded camshaft timing (for intake camshaft) |
|
Required Sensors/Components (Main) |
Camshaft timing oil control valve assembly (for intake camshaft) Camshaft timing gear assembly |
|
Required Sensors/Components (Related) |
Crank position sensor Cam position sensor Engine coolant temperature sensor |
|
Frequency of Operation |
Continuous |
|
Duration |
Within 10 seconds |
|
MIL Operation |
Advanced camshaft timing: Immediate Retarded camshaft timing: 2 driving cycles |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
|
Monitor runs whenever the following DTCs are not stored |
P0010 (Camshaft timing oil control valve) P0016 (VVT system - misalignment) P0102, P0103 (Mass air flow meter) P0107, P0108 (Manifold absolute pressure) P0115, P0117, P0118 (Engine coolant temperature sensor) P0125 (Insufficient coolant temperature for closed loop fuel control) P0335 (Crank position sensor) P0340 (Cam position sensor) |
|
Battery voltage |
11 V or higher |
|
Engine speed |
500 to 4000 rpm |
|
Engine coolant temperature |
73 to 100°C (163.4 to 212°F) (except Mexico models) 75 to 100°C (167 to 212°F) (for Mexico models) |
TYPICAL MALFUNCTION THRESHOLDS
P0011: Advanced Camshaft Timing (for Intake Camshaft)
|
Both of the following conditions are met |
- |
|
Deviation of actual valve timing and target valve timing |
More than 5°CA (Crankshaft Angle) for 5 seconds or more after the VVT hold duty ratio learned value reaches the upper or lower limit. |
|
Valve timing |
No change at advanced valve timing |
P0012: Retarded Camshaft Timing (for Intake Camshaft)
|
Both of the following conditions are met |
- |
|
Deviation of actual valve timing and target valve timing |
More than 5°CA (Crankshaft Angle) for 5 seconds or more after the VVT hold duty ratio learned value reaches the upper or lower limit. |
|
Valve timing |
No change at retarded valve timing |
If the difference between the target and actual camshaft timing is greater than the specified value, the ECM operates the VVT actuator (camshaft timing oil control valve assembly) for 10 seconds by applying and releasing oil pressure. Then, the ECM monitors the camshaft timing change for 10 seconds.
MONITOR RESULT
Refer to detailed information in Checking Monitor Status.
Click here
P0011, P0012: Exhaust Gas Recirculation/VVT / IN VVT STUCK B1
|
Monitor ID |
Test ID |
Scaling |
Unit |
Description |
|---|---|---|---|---|
|
$35 |
$81 |
Multiply by 0.01 |
Second |
Forced movement of cam timing control actuator time |
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for at least 30 seconds.
- Turn the ignition switch to ON [A].
- Turn the Techstream on.
- Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
-
Drive the vehicle at approximately 60 km/h (37 mph) for 10 minutes or more [C].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
- Idle the engine for 3 minutes or more [D].
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
-
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.
- Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
- Input the DTC: P0011 or P0012.
-
Check the DTC judgment result.
Techstream Display
Description
NORMAL
ABNORMAL
- DTC judgment completed
- System abnormal
INCOMPLETE
- DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
N/A
- Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform steps [F] through [H].
-
Repeat the pattern of accelerating the vehicle from rest to approximately 60 km/h (37 mph) and then decelerating the vehicle 10 to 15 times [F].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
Depress the accelerator pedal by a large amount.
- Idle the engine for 3 minutes or more [G].
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [H].
-
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.
-
Check the DTC judgment result again.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the following procedure.
-
Perform a universal trip and check for permanent DTCs.
Click here
HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
Refer to DTC P0010.
Click here
CAUTION / NOTICE / HINT
HINT:
- DTC P0011 or P0012 may be stored when foreign matter in the engine oil is caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. That foreign matter may then be captured by the oil filter.
- 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. |
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011 OR P0012) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(e) Read the DTCs.
Powertrain > Engine and ECT > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTC P0011 or P0012 is output |
A |
|
DTC P0011 or P0012 and other DTCs are output |
B |
HINT:
If any DTCs other than P0011 or P0012 are output, troubleshoot those DTCs first.
| B |
|
GO TO DTC CHART
|
|
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR) |
(a) Connect the Techstream to the DLC3.
(b) Start the engine.
(c) Turn the Techstream on.
(d) Turn the A/C switch on.
(e) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1).
Powertrain > Engine and ECT > Active Test
|
Tester Display |
|---|
|
Control the VVT Linear (Bank1) |
(f) Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the Techstream.
OK:
|
Techstream Operation |
Engine Condition |
|---|---|
|
0% |
Normal engine speed |
|
100% |
Engine idles roughly or stalls |
HINT:
-
Refer to "Data List / Active Test" [VVT OCV Duty #1 and VVT Change Angle #1].
Click here
- If the result is not acceptable, cool the engine (engine coolant temperature is 50°C (122°F) or less) and perform the Active Test again.
- If DTCs are stored after the Active Test, clear the DTCs.
| NG |
|
|
|
3. |
CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCs
(e) Turn the ignition switch off and wait for at least 30 seconds.
|
|
4. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012) |
(a) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
(c) Read the pending DTCs.
Powertrain > Engine and ECT > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC P0011 or P0012 is output |
B |
HINT:
DTC P0011 or P0012 may be stored when foreign matter in the engine oil is caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. That foreign matter may then be captured by the oil filter.
| A |
|
| B |
|
|
5. |
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) |
(a) Inspect the camshaft timing oil control valve assembly (for intake camshaft).
Click here
| NG |
|
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) |
|
|
6. |
CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) |
(a) Remove the cylinder head cover sub-assembly.
Click here
(b) Turn the crankshaft pulley and align its groove with the "0" timing mark of the timing chain or belt cover sub-assembly.
(c) Check that the timing marks of the camshaft timing gear assembly and camshaft timing exhaust gear assembly are at the positions shown in the illustration.
|
*a |
39.5° |
*b |
Timing Mark |
|
*c |
"0" Timing Mark |
*d |
Groove |
HINT:
If the timing marks are not as shown, turn the crankshaft one revolution clockwise.
OK:
Timing marks on camshaft timing gear assembly and camshaft timing exhaust gear assembly are at the positions shown in the illustration.
HINT:
If the result is not as specified, check for mechanical malfunctions that may have affected the valve timing, such as a jumped tooth or stretching of the timing chain.
| NG |
|
|
|
7. |
INSPECT CAMSHAFT TIMING GEAR ASSEMBLY |
(a) Inspect the camshaft timing gear assembly.
Click here
HINT:
Perform "Inspection After Repair" after replacing the camshaft timing gear assembly.
Click here
| OK |
|
| NG |
|
|
8. |
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.
HINT:
Perform "Inspection After Repair" after repairing or replacing the engine mechanical system.
Click here
| NG |
|
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA |
|
|
9. |
CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCs
(e) Turn the ignition switch off and wait for at least 30 seconds.
|
|
10. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012) |
(a) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
(c) Read the pending DTCs.
Powertrain > Engine and ECT > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC P0011 or P0012 is output |
B |
| A |
|
| B |
|
REPLACE ECM
|
|
|