DTC P0033-12: Turbocharger / Supercharger Bypass Valve "A" Control Circuit Short to Battery [09/2022 - 09/2024]: Procedure
WARNING: This page is about a different car, the 2025 Toyota GR Corolla, 2024 Toyota GR Corolla, and 2023 Toyota GR Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- PERFORM ACTIVE TEST USING GTS (ACTIVATE THE AIR BYPASS VALVE)
- Enter the following menus.
Powertrain > Engine > Active Test
Active Test Display Activate the Air Bypass Valve Data List Display Air Bypass Valve Control - According to the display on the GTS, perform the Active Test and check the operation and operation sound of the air by-pass valve.
OK
Active Test Standard ON - ON is displayed for Data List item "Air Bypass Valve Control"
- Air by-pass valve operates (operation sound is normal)
Result
Proceed to OK NG
Result:
OK
CHECK FOR INTERMITTENT PROBLEMS
Refer to CHECK FOR INTERMITTENT PROBLEMS [09/2022 - ]
Result:
NG
See step 2
- Enter the following menus.
- INSPECT TURBOCHARGER SUB-ASSEMBLY
Refer to INSPECTION [09/2022 - ]
Result
Proceed to OK NG Result:
NG
REPLACE TURBOCHARGER SUB-ASSEMBLY (AIR BY-PASS VALVE MALFUNCTION)
Refer to REMOVAL [09/2022 - ]
Result:
OK
See step 3
- CHECK HARNESS AND CONNECTOR (AIR BY-PASS VALVE - ECM)
- Disconnect the air by-pass valve connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition C140-2 (ABV) or C142-20 (ABV) - Other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 4
- CHECK WHETHER DTC OUTPUT RECURS (DTC P0033-12)
- Clear the DTCs.
Powertrain > Engine > Clear DTCs
- Turn the ignition switch off and wait for at least 30 seconds.
- Start the engine and warm it up.
- Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
- Enter the following menus.
Powertrain > Engine > Utility
Tester Display All Readiness - Input the DTC: P0033-12.
- Check the DTC judgment result.
Result
Result Proceed to NORMAL
(DTCs are not output)A ABNORMAL
(P0033-12 is output)B
Result:
A
CHECK FOR INTERMITTENT PROBLEMS
Refer to CHECK FOR INTERMITTENT PROBLEMS [09/2022 - ]
Result:
B
REPLACE ECM
Refer to REMOVAL [09/2022 - 11/2022] , or refer to REMOVAL [11/2022 - 09/2024]
- Clear the DTCs.