NR Series ENGINE CONTROL SFI SYSTEM P024313 Turbocharger/Supercharger Wastegate Solenoid "A" Circuit Open
DESCRIPTION
The waste gate valve is built into the turbine housing and is operated by the vacuum regulating valve assembly. The ECM uses duty control to open and close the vacuum regulating valve assembly. The amount of opening is controlled according to the operation status.
When the engine is started, the degree of opening of the waste gate valve is optimally adjusted so that the hot combustion gases passing through it flow directly into the catalyst. In the low-engine-load operating range, the waste gate valve opens to lower the exhaust manifold pressure to reduce pumping losses and improve fuel economy. Closing the waste gate valve increases the torque in the engine low-speed, high-load range to improve response during acceleration.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P024313 | Turbocharger/Supercharger Wastegate Solenoid "A" Circuit Open | Open or short in vacuum regulating valve assembly circuit for 1 second or more (1 trip detection logic) | ·
Open or short in vacuum regulating valve assembly circuit ·
Vacuum regulating valve assembly ·
ECM |
Comes on | DTC stored | SAE Code: P0243 |
MONITOR DESCRIPTION
This DTC is stored when an open or short is detected in the vacuum regulating valve assembly circuit. When an excessively high or low duty cycle malfunction occurs in the vacuum regulating valve assembly during vacuum regulating valve assembly drive, the ECM stores this DTC.
MONITOR STRATEGY
| Required Sensors/Components (Main) | Vacuum regulating valve assembly |
| Frequency of Operation | Continuous |
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.
·When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS 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 warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [A].
Turn the GTS on.
Accelerate to 50 km/h (31 mph) or more with the accelerator pedal fully depressed [B].
- CAUTION:
-
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
Enter the following menus: Powertrain / Engine / Trouble Codes [C].
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 / Utility / All Readiness.
Input the DTC: P024313.
Check the DTC judgment result.
| GTS 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 shows NORMAL, the system is normal.
·If the judgment result shows ABNORMAL, the system has a malfunction.
·If the judgment result shows INCOMPLETE, perform steps [B] through [C] again.
·[A] to [C]: 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.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- HINT:
-
Read Freeze Frame Data using the GTS. 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
Inspect the vacuum regulating valve assembly.
- Result:
Proceed to OK NG
OK
NG
Disconnect the vacuum regulating valve assembly connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition C98-1 (+) - C78-37 (WGV+) Always Below 1 Ω C98-2 (-) - C78-36 (WGV-) Always Below 1 Ω C98-1 (+) or C78-37 (WGV+) - Body ground and other terminals Always 10 kΩ or higher C98-2 (-) or C78-36 (WGV-) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Powertrain > Engine > Utility
-
Tester Display All Readiness - 50005 372 20
Input the DTC: P024313.
Check the DTC judgment result.
- Result:
Result Proceed to NORMAL
(DTCs are not output)A ABNORMAL
(DTC P024313 is output)B
A
B