Orlando

DTC P0117, P0118, or P0119

The ECT sensor 1 is a variable resistor that measures the temperature of the engine coolant. The engine control module (ECM) supplies 5 V to the ECT sensor 1 signal circuit and supplies a ground for the low reference circuit.

The purpose of this diagnostic is to analyse the performance of the ECT sensor 1 by comparing the response and the range of the sensor signal to two distinct models under various operating conditions.

P0117 00 and P0118 00

P0119 00

P0117 00

The ECM detects that the ECT sensor 1 signal is less than 0.27 V, which is warmer than 137°C (279°F) for greater than 2 s.

P0118 00

The ECM detects that the ECT sensor 1 signal is greater than 4.96 V, which is colder than -39°C (-38°F) for greater than 2 s.

P0119 00

The ECM detects that the ECT sensor 1 signal has abruptly changed by a minimum of 5°C (9°F), warmer or colder for greater than 2 s.

DTCs P0117 00, P0118 00 and P0119 00 are Type B DTCs

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Cooling System Description and Operation : 2.4L LAF → 2.0L Diesel LNP

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. If the ignition has been OFF for 8 h or greater, the IAT, the ambient air temperature, and the ECT should be within 9°C (16°F) of each other. Ignition ON, observe the scan tool IAT Sensor, Ambient Air Temperature, and the ECT Sensor 1 parameters. Compare those sensor parameters to each other to determine if the condition is current.
2. Engine running, observe the scan tool ECT Sensor 1 parameter. The reading should be between -39 to +139°C (-38 to +282°F) depending on the current Ambient Air Temperature, the engine run time, and the vehicle operating conditions.
3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Note: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

1. Ignition OFF, disconnect the harness connector at the B34A Evaporator Temperature Sensor 1.
2. Ignition ON, clear the DTC information with a scan tool.
3. Ignition OFF, test for less than 5 Ω of resistance between the low reference circuit terminal 2 and ground.

⇒	If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

4. Ignition ON, verify the scan tool ECT Sensor 1 parameter is at -40°C (-40°F).

⇒	If greater than the specified range, test the signal circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module.

5. Ignition ON, clear the DTC information with a scan tool.
6. Install a 1A fused jumper wire between the signal circuit terminal 1 and the low reference circuit terminal 2. Verify the scan tool ECT sensor 1 parameter is greater than 128°C (262°F).

⇒	If less than specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

7. If all circuits test normal, test or replace the B34A Engine Coolant Temperature Sensor 1.

Static Test

1. Ignition OFF, disconnect the harness connector at the B34A Evaporator Temperature Sensor 1.

Note: A thermometer can be used to test the sensor off the vehicle.

2. Test the B34A Engine Coolant Temperature Sensor 1 by varying the sensor temperature while monitoring the sensor resistance. Compare the readings with the table and verify that the resistance is within 5% of the specification.

⇒	If not within the specified range, replace the B34A Engine Coolant Temperature Sensor 1.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.