Toyota Yaris: Sfi System / Engine Coolant Temperature Sensor 1 Signal Stuck in Range (P01152A)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Engine & Hybrid System / G16e-gts (engine Control) / Sfi System / Engine Coolant Temperature Sensor 1 Signal Stuck in Range (P01152A)

DESCRIPTION

Refer to DTC P011511.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

P01152A

Engine Coolant Temperature Sensor 1 Signal Stuck in Range

Either of the following conditions is met (2 trip detection logic):

  • When engine is started cold and warmed up, the engine coolant temperature sensor value does not change.
  • After the warmed up engine is stopped and then next cold engine start is performed, the engine coolant temperature sensor value does not change.
  • Water inlet with thermostat sub-assembly
  • Engine coolant temperature sensor

Comes on

SAE: P0116

MONITOR DESCRIPTION

Engine Coolant Temperature Sensor Cold Start Monitor

When a cold engine start is performed and then the engine is warmed up, if the engine coolant temperature sensor value does not change, it is determined that a malfunction has occurred. If this is detected in 2 consecutive driving cycles, the MIL is illuminated and this DTC is stored.

Engine Coolant Temperature Sensor Soak Monitor

If the engine coolant temperature sensor value does not change after the warmed up engine is stopped and then the next cold engine start is performed, it is determined that a malfunction has occurred. If this is detected in 2 consecutive driving cycles, the MIL is illuminated and this DTC is stored.

MONITOR STRATEGY

Required Sensors/Components

Engine coolant temperature sensor

Frequency of Operation

Once per driving cycle

CONFIRMATION DRIVING PATTERN

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the GTS on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the ignition switch off and wait for at least 30 seconds.
  6. Turn the ignition switch to ON [A].
  7. Turn the GTS on.
  8. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.
  9. Check that the engine coolant temperature is 60°C (140°F) or less.
  10. Start the engine and idle it for 5 minutes or more [B].

    HINT:

    If the engine coolant temperature does not change by 5°C (9°F) or higher, the engine coolant temperature sensor is malfunctioning. It is not necessary to continue this procedure.

  11. Enter the following menus: Powertrain / Engine / Trouble Codes [C].
  12. 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.
  13. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  14. Input the DTC: P01152A.
  15. 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 is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system is malfunctioning.
    • If the judgment result is INCOMPLETE, perform steps [D] through [E].
  16. Drive the vehicle at 40 km/h (25 mph) or more for a total of 5 minutes or more [D].

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    HINT:

    In the event of the drive pattern being interrupted (possibly due to factors such as traffic conditions), the drive pattern can be resumed.

  17. Check the DTC judgment result again [E].

    HINT:

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system is malfunctioning.

CAUTION / NOTICE / HINT

HINT:

  • If DTC P011511 or P011515 is output simultaneously with DTC P01152A, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
  • When the DTC is output, check the engine coolant temperature using the GTS. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature. If the Coolant Temperature value is lower than the actual engine coolant temperature, the engine coolant temperature sensor circuit may be malfunctioning. In this case, check the wire harnesses and connectors (and those connections) between the ECM and the engine coolant temperature sensor first.
  • 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 ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P01152A)

(a) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

P01152A and other DTCs are output

A

P01152A is output

B

HINT:

If any DTCs other than P01152A are output, troubleshoot those DTCs first.

A

GO TO DTC CHART

B

2.

INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

Click here

OK

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

NG

REPLACE WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

    Engine Coolant Temperature Sensor 1 Circuit Short to Ground (P011511)

    DESCRIPTION A thermistor, whose resistance value varies according to the engine coolant temperature, is built into the engine coolant temperature sensor...

    Engine Coolant Temperature Sensor 1 Circuit Short to Battery or Open (P011515)

    DESCRIPTION Refer to DTC P011511. Click here HINT: When DTC P011515 is stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM sets the engine coolant temperature judgment value to 80°C (176°F) and the target engine coolant temperature to 82°C (180°F)...

    Other information:

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Ground (P034011,P034015)


    DESCRIPTION The camshaft position sensor (for intake camshaft) (VV1 signal) consists of a magnet and MRE (Magneto-Resistive Element). The intake camshaft has a timing rotor for the camshaft position sensor. When the intake camshaft rotates, changes occur in the air gaps between the timing rotor and MRE, which affects the magnetic field...

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Precaution


    PRECAUTION PRECAUTIONS FOR FRONT CAMERA SYSTEM (a) Features of forward recognition camera (1) The forward recognition camera has characteristics similar to those of human eyes. When the visibility is poor for the driver, the forward recognition camera may not properly detect lane markers or vehicles and objects on the road ahead...

    Categories

    Fuel Gauge

    The fuel gauge shows approximately how much fuel is remaining in the tank when the ignition is switched ON. We recommend keeping the tank over 1/4 full.

    Toyota Yaris. Fuel Gauge

    Full 1/4 Full Empty

    read more

     
    Copyright © 2022 www.toyaris4.com