Toyota Yaris: Sfi System / Turbocharger/Supercharger Inlet Pressure Sensor "A" Circuit High Circuit Short to Battery or Open (P012A15)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Engine & Hybrid System / G16e-gts (engine Control) / Sfi System / Turbocharger/Supercharger Inlet Pressure Sensor "A" Circuit High Circuit Short to Battery or Open (P012A15)

DESCRIPTION

Refer to DTC P012A11.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

P012A15

Turbocharger/Supercharger Inlet Pressure Sensor "A" Circuit High Circuit Short to Battery or Open

The output voltage from the E.F.I. vacuum sensor assembly is higher than 4.9 V for 3 seconds or more (1 trip detection logic).

  • Open or short in E.F.I. vacuum sensor assembly circuit
  • E.F.I. Vacuum sensor assembly
  • ECM

-

SAE: P012D

HINT:

When a DTC is output, check the Data List item "Turbocharger/Supercharger Inlet Pressure Bank1" using the GTS.

Click here

DTC No.

Turbocharger/Supercharger Inlet Pressure Bank1

Malfunction

P012A15

120 kPa [17.4 psi] or higher

  • Short in VCPR circuit to PIC circuit
  • Open in PIC circuit
  • Open in EPR circuit

If the Data List displays a normal value, the normal value may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

MONITOR DESCRIPTION

The ECM calculates the air inlet duct internal pressure from the E.F.I. vacuum sensor assembly output voltage. If the E.F.I. vacuum sensor assembly output voltage is not within the normal range, there may be a malfunction in the E.F.I. vacuum sensor assembly or an open or short circuit. In this case, the ECM stores a DTC.

Example:

When the sensor output voltage is higher than 4.9 V for 3 seconds or more, the ECM stores a DTC.

CONFIRMATION DRIVING PATTERN

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON and turn the GTS on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off and wait for at least 30 seconds.
  5. Turn the ignition switch to ON and turn the GTS on.
  6. Start the engine and wait 5 seconds or more.
  7. Enter the following menus: Powertrain / Engine / Trouble Codes.
  8. 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.
  9. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  10. Input the DTC: P012A15.
  11. 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.

WIRING DIAGRAM

Refer to DTC P012A11.

Click here

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

1.

CHECK HARNESS AND CONNECTOR

HINT:

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

(a) Disconnect the E.F.I. vacuum sensor assembly connector.

(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

D93-3(VC) - D93-1(E2)

Ignition switch ON

4.5 to 5.5 V

D93-2(PIC) - D93-1(E2)

Ignition switch ON

3.0 to 5.5 V

*a

Front view of wire harness connector

(to E.F.I. Vacuum Sensor Assembly)

(d) Turn the ignition switch off and wait for at least 30 seconds.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

D93-3(VC) - D93-2(PIC)

Ignition switch off

171 to 189 kΩ

D93-1(E2) - Body ground

Always

Below 1 Ω

OK

REPLACE E.F.I. VACUUM SENSOR ASSEMBLY

NG

2.

CHECK HARNESS AND CONNECTOR (E.F.I. VACUUM SENSOR ASSEMBLY - ECM)

(a) Disconnect the E.F.I. vacuum sensor assembly connector.

(b) Disconnect the ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

D93-2(PIC) - D104-105(PIC)

Always

Below 1 Ω

D93-1(E2) - D104-81(EPIC)

Always

Below 1 Ω

D93-2(PIC) or D104-105(PIC) - Other terminals

Always

10 kΩ or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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