Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
3Zr-Fae Engine Control System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
PERFORM ACTIVE TEST USING INTELLIGENT TESTER
DTC P1046 Driver Detects Difference between Target and Actual Valvematic Angle |
DTC P1055 ECM Detects Difference between Target and Actual Valvematic Angle |
DESCRIPTION
The VALVEMATIC system is able to continuously change the valve lift amount and valve timing. The VALVEMATIC system cooperates with the VVT-i to adjust the valve lift amount and valve timing optimally according to driving conditions. The ECM calculates the target intake air amount based on the amount the accelerator pedal is depressed and the engine speed to determine the value lift amount (duration), valve timing and throttle valve opening angle. The continuously variable valve lift controller assembly operates the actuator to adjust the duration to the duration requested by the ECM via CAN communication. The actual operating conditions are monitored by the sensors in the continuously variable valve lift controller assembly, which send the actual duration value to the ECM. The continuously variable valve lift controller assembly consists of the valve lift control driver, actuator, differential roller gear, angle sensor and position sensor.
| *1 | ECM | *2 | Continuously Variable Valve Lift Controller |
| *3 | EDU | *4 | Actuator |
| *5 | Differential Roller Gear | *6 | Position Sensor and Angle Sensor |
| *7 | Engine | *8 | Continuously Variable Valve Train |
| DTC No. | DTC Detection Condition | Trouble Area |
| P1046 P1055 | The actual duration differs from the requested duration by 22°CA or more for a certain period of time (1 trip detection logic).
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- Connect the intelligent tester to the DLC3.
- Start the engine.
- Turn the tester on.
- Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VALVEMATIC (ENG ON).
- NOTICE:
- Make sure the following conditions are met when performing the Active Test.
- The engine is running.
- The engine coolant temperature is 40°C (104°F) or higher.
- The vehicle is stationary.
- The shift lever is in P or N (for CVT), or neutral (for Manual Transaxle).
- Result:
- The "VALVEMATIC Current Angle" follows the "VALVEMATIC Target Angle".
- HINT:
- Perform a simulation test by referring to the engine coolant temperature and intake air temperature recorded in the freeze frame data.
- When the Active Test results are abnormal, remove the continuously variable valve lift controller assembly from the camshaft housing and perform the "Activate the VALVEMATIC (ENG OFF)" Active Test with the removed continuously variable valve lift controller to determine whether the problem is with the continuously variable valve lift controller assembly or camshaft housing.
INSPECTION PROCEDURE
- HINT:
- If DTC P1047 is output at the same time as DTC P1046, disregard DTC P1047 and proceed with the inspection.
- The VALVEMATIC system is monitored by the valve lift control driver (DTC P1046) in the continuously variable valve lift controller assembly and the ECM (DTC P1055). When a VALVEMATIC system malfunction is detected and DTC P1046 is not output, DTC P1055 is output.
- After performing repairs, perform the following procedures and check that DTCs are not output again.
- Connect the intelligent tester to the DLC3.
- Start the engine and warm it up.
- Turn the tester on.
- Clear the DTCs (RAV4_ACA30 RM000000PDK0BLX.html).
- Turn the ignition switch off and wait 10 seconds.
- Start the engine and idle it for 20 seconds.
- Clear the DTCs (RAV4_ACA30 RM000000PDK0BLX.html).
- Turn the ignition switch off and wait 10 seconds.
- Start the engine and idle it for 20 seconds.
- Turn the ignition switch off and wait 10 seconds.
- Turn the ignition switch to ON.
- Enter the following menus: Powertrain / Engine and ECT / DTC.
- Read the DTCs.
| 1.CHECK ANY OTHER DTCS OUTPUT |
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON.
Turn the tester on.
Enter the following menus: Powertrain / Engine and ECT / DTC.
Read the DTCs.
Result Result Proceed to DTC P1046 and/or P1055 is output A DTC P0112, P0113, P0115, P0117 or P0118 is output at same time as DTC P1046 and/or P1055 B - HINT:
- If an engine coolant temperature sensor malfunction DTC or intake air temperature sensor malfunction DTC is output at the same time as DTC P1046, check the corresponding temperature sensor first.
- After repairing the temperature sensor, clear the DTCs, perform a simulation test and check that the temperature sensor DTC is not output.
- When the temperature sensor DTC does not reoccur but DTC P1046 is output again, perform troubleshooting from the next step. If a DTC is not output, troubleshooting is complete.
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| A | |
| 2.PERFORM ACTIVE TEST USING INTELLIGENT TESTER |
Remove the continuously variable valve lift controller assembly from the camshaft housing (RAV4_ACA30 RM0000027IB01JX.html).
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON.
Turn the tester on.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VALVEMATIC (ENG OFF).
When the continuously variable valve lift controller assembly is operated using the intelligent tester, check whether the shaft moves (RAV4_ACA30 RM000000PDN09ZX.html).
- NOTICE:
- Make sure to perform the "Activate the VALVEMATIC (ENG OFF)" Active Test with the continuously variable valve lift controller assembly removed from the vehicle.
- Perform the Active Test with the body of the continuously variable valve lift controller assembly connected to ground, as the continuously variable valve lift controller assembly is grounded through the body.
Result Tester Operation Specified Condition Low VALVEMATIC Current Angle is 100 to 120°CA and shaft extends High VALVEMATIC Current Angle is 250°CA and shaft retracts - HINT:
- If the malfunction does not reoccur, refer to the engine coolant temperature and intake air temperature recorded in the freeze frame data and perform a simulation test.
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| OK | ||
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