Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VICE
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 08/2016]
Title: 2GR-FE (ENGINE CONTROL): SFI SYSTEM: P0116; Engine Coolant Temperature Circuit Range / Performance; 2016 MY Sienna [12/2015 - 08/2016]

DTC

P0116

Engine Coolant Temperature Circuit Range / Performance

DESCRIPTION

Refer to DTC P0115 (See page 2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE (ENGINE CONTROL): SFI SYSTEM: P0115,P0117,P0118; Engine Coolant Temperature Circuit+ ).

DTC No.

DTC Detection Condition

Trouble Area

P0116

When either of the following conditions is met

(2 trip detection logic):

  • When cold engine started and engine warmed up, engine coolant temperature sensor value does not change
  • After warmed up engine stopped and then next cold engine start performed, engine coolant temperature sensor value does not change
  • Thermostat
  • Engine coolant temperature sensor

P0116

For Mexico Models:

Case 1:

Engine coolant temperature between 35°C and 60°C (95°F and 140°F) when engine started, and conditions (a) and (b) are met (2 trip detection logic)

  • (a) Vehicle driven at varying speeds (accelerated and decelerated)
  • (b) Engine coolant temperature remains within 3°C (5.4°F) of initial engine coolant temperature

Case 2:

Engine coolant temperature more than 60°C (140°F) when engine started, and conditions (a) and (b) are met (6 trip detection logic)

  • (a) Vehicle driven at varying speeds (accelerated and decelerated)
  • (b) Engine coolant temperature measurements remain within 1°C (1.8°F) of initial engine coolant temperature on 6 successive occasions
  • Thermostat
  • Engine coolant temperature sensor

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 a 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 a DTC is stored.

Engine coolant temperature sensor high side stuck monitor (only for Mexico models)

The ECM monitors the sensor voltage and uses this value to calculate the engine coolant temperature. If the sensor voltage output deviates from the normal operating range, the ECM interprets this deviation as a malfunction in the engine coolant temperature sensor and stores the DTC.

Examples:

  • Upon starting the engine, the engine coolant temperature is between 35°C and 60°C (95°F and 140°F). If after driving for 250 seconds, the engine coolant temperature remains within 3°C (5.4°F) of the starting temperature, the DTC is stored (2 trip detection logic).
  • Upon starting the engine, the engine coolant temperature is over 60°C (140°F). If after driving at varying speeds (accelerating and decelerating) for a specified period of time, the engine coolant temperature remains within 1°C (1.8°F) of the starting temperature, the DTC is stored (6 trip detection logic).

MONITOR STRATEGY

Related DTCs

P0116: Engine coolant temperature sensor cold start monitor

P0116: Engine coolant temperature sensor soak monitor

Required Sensors/Components (Main)

Engine coolant temperature sensor

Required Sensors/Components (Related)

-

Frequency of Operation

Once per driving cycle

Duration

-: Cold start monitor

10 seconds Soak monitor

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Engine Coolant Temperature Sensor Cold Start Monitor

Monitor runs whenever following DTCs are not present

None

Battery voltage

10.5 V or higher

Time after engine start

1 second or more

Engine coolant temperature at engine start

Less than 60°C (140°F)

Engine coolant temperature sensor circuit fail (P0115, P0117, P0118, P0125)

Not detected

Intake air temperature sensor circuit fail (P0112, P0113)

Not detected

Thermostat fail (P0128)

Not detected

Soak time

0 seconds or more

Accumulated mass air flow

3480 g or more

Fuel cut

OFF

Difference between engine coolant temperature at engine start and intake air temperature

Less than 40°C (72°F)

Engine Coolant Temperature Sensor Soak Monitor

Monitor runs whenever following DTCs are not present

None

Battery voltage

10.5 V or more

Engine

Running

Engine coolant temperature sensor circuit fail (P0115, P0117, P0118, P0125)

Not detected

Intake air temperature sensor circuit fail (P0112, P0113)

Not detected

Thermostat fail (P0128)

Not detected

Soak timer circuit fail (P2610)

Not detected

Soak time

5 hours or more

One of the following conditions is met:

(a) or (b)

(a) Engine coolant temperature

60°C (140°F) or more

(b) Accumulated mass air flow

6960 g or more

TYPICAL MALFUNCTION THRESHOLDS

Engine Coolant Temperature Sensor Cold Start Monitor

Engine coolant temperature sensor value change

Less than 5°C (9°F)

Engine Coolant Temperature Sensor Soak Monitor

Difference between current engine coolant temperature sensor value and previous engine coolant temperature sensor value when engine stopped

Less than 5°C (9°F)

COMPONENT OPERATING RANGE

Engine coolant temperature

Engine coolant temperature sensor value changes in accordance with actual engine coolant temperature

CONFIRMATION DRIVING PATTERN

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp.
  4. Check that the coolant temperature is 60°C (140°F) or less.
  5. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) (See page 2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR ).
  6. Turn the ignition switch off and wait for at least 30 seconds.
  7. Turn the ignition switch to ON and turn the Techstream on [A].
  8. 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 more, the engine coolant temperature sensor is malfunctioning. It is not necessary to continue this procedure.

  9. Enter the following menus: Powertrain / Engine / Trouble Codes [C].
  10. Read pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  12. Input the DTC: P0116.
  13. Check the DTC judgment result.

    Techstream 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

    N/A
    • Unable to perform DTC judgment
    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    HINT:

    If the judgment result shows INCOMPLETE or N/A, perform steps [D] and [E].

  14. 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.

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

    HINT:

    If the judgment result shows INCOMPLETE or N/A, perform steps [D] and [E] again.

  16. If no pending DTC is output, perform a universal trip and check for permanent DTCs (See page 2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR ).

    HINT:

    • If a permanent DTC is output, the system is malfunctioning.
    • If no permanent DTC is output, the system is normal.

CAUTION / NOTICE / HINT

HINT:

  • If any of DTCs P0115, P0117 and P0118 are stored simultaneously with DTC P0116, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
  • Read freeze frame data using the Techstream. 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.
  • When the DTC is output, check the engine coolant temperature using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp. If the Coolant Temp 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.

PROCEDURE

1.

CHECK ANY OTHER DTC OUTPUT (IN ADDITION TO DTC P0116)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read DTCs.

Result

Result

Proceed to

DTC P0116 is output

A

DTC P0116 and other DTCs are output

B

HINT:

If any DTCs other than P0116 are output, troubleshoot those DTCs first.

B

GO TO DTC CHART

A

2.

INSPECT THERMOSTAT

(a) Check the valve opening temperature of the thermostat (See page 2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE COOLING: THERMOSTAT: INSPECTION ).

HINT:

Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (See page 2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION ).

OK

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

NG

REPLACE THERMOSTAT