- DTC judgment completed
- System normal
| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001GHB3 |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 03/2019] |
| Title: 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: P264A; A Rocker Arm Actuator Position Sensor Circuit B1; 2020 MY Corolla [01/2019 - 03/2019] | ||
|
DTC |
P264A |
A Rocker Arm Actuator Position Sensor Circuit B1 |
DESCRIPTION
There are position sensor and angle sensor in the continuously variable valve lift controller assembly. They detect the actuator position and rotation direction.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
|---|---|---|---|---|---|
|
P264A |
A Rocker Arm Actuator Position Sensor Circuit B1 |
When either of the following conditions is met (1 trip detection logic):
|
Continuously variable valve lift controller assembly |
Comes on |
DTC stored |
MONITOR DESCRIPTION
There are position sensor and angle sensor in the continuously variable valve lift controller assembly. When there is a malfunction in any of the sensors, this DTC is stored and the MIL is illuminated.
MONITOR STRATEGY
|
Related DTCs |
P264A: VALVEMATIC angle sensor malfunction P264A: VALVEMATIC position sensor malfunction |
|
Required Sensors/Components (Main) |
Continuously variable valve lift controller assembly |
|
Required Sensors/Components (Related) |
- |
|
Frequency of Operation |
Continuous |
|
Duration |
1 second or less |
|
MIL Operation |
Immediate |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
|
Monitor runs whenever the following DTCs are not stored |
None |
|
Battery voltage |
8 V or higher |
TYPICAL MALFUNCTION THRESHOLDS
VALVEMATIC Angle Sensor Malfunction
|
Either of the following conditions is met |
1 or 2 |
|
1. All of the following conditions are met |
- |
|
Electric pulse sensor S1 |
Low |
|
Electric pulse sensor S2 |
Low |
|
Electric pulse sensor S3 |
Low |
|
2. All of the following conditions are met |
- |
|
Electric pulse sensor S1 |
High |
|
Electric pulse sensor S2 |
High |
|
Electric pulse sensor S3 |
High |
VALVEMATIC Position Sensor Malfunction
|
Following conditions neither A nor B are not met |
- |
|
A. Count of edge of motor position sensors between edge of electric angle sensors |
4 counts |
|
B. Count of edge of motor position sensors between edge of electric angle sensors |
-4 counts |
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Start the engine and warm it up.
- 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.
- Start the engine and idle it for 20 seconds.
- Turn the Techstream on.
- Clear the DTCs.
- Turn the ignition switch off and wait for at least 30 seconds.
- Start the engine and idle it for 20 seconds.
- Turn the ignition switch off and wait for at least 30 seconds.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
-
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: P264A.
-
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 is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs.
Click here
![2020 MY Corolla [01/2019 - 03/2019]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
CAUTION / NOTICE / HINT
NOTICE:
When one of the following DTCs is output and the MIL is illuminated, actuator position learning is performed during the next trip. After the system returns to normal, actuator position learning is performed during the next trip and the MIL remains illuminated until learning is complete.
|
Actuator position learning is performed when these DTCs are output. |
|---|
|
P1049, P104A, P1055, P2646, P2647, P2648, P2649, P264A, U011B |
HINT:
- After performing repairs, perform the following procedures and check that DTCs are not output again.
- After using the Techstream to perform minimum valve lift learning, keep the engine idling for 30 seconds to complete learning. Otherwise, the VALVEMATIC system may not operate normally, causing poor acceleration, etc.
- 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. |
REPLACE CONTINUOUSLY VARIABLE VALVE LIFT CONTROLLER ASSEMBLY |
(a) Replace the continuously variable valve lift controller assembly.
Click here
HINT:
Perform "Inspection After Repair" after replacing the continuously variable valve lift controller assembly.
Click here
| NEXT |
|
END |
|
|