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Home >> Chrysler >> 2004 >> Sebring Limited, 2D Convertible >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Powertrain Diagnostic Procedures - NGC DRIVEABILITY Symptoms, NGC DRIVEABILITY Diagnostic Tests DTCS P0016 To P0461 - Except Coupe >> DRIVEABILITY - NGC - Diagnostic Tests >> DTC P0116: Engine Coolant Temperature Performance >> Possible Causes

Possible Causes

GOOD TRIP EQUAL TO ZERO

(K2) ECT SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE

ECT SENSOR VOLTAGE BELOW 1.0 VOLT

(K2) ECT SIGNAL CIRCUIT OPEN

(K4) SENSOR GROUND CIRCUIT OPEN

(K2) ECT SIGNAL CIRCUIT SHORTED TO GROUND

(K2) ECT SIGNAL SHORTED TO (K4) SENSOR GROUND

PCM HIGH

PCM LOW

DIAGNOSTIC PROCEDURE - P0116-ENGINE COOLANT TEMPERATURE PERFORMANCE

TEST ACTION
1
NOTE: Due to the fact that the PCM compares the IAT, AAT and ECT sensor to see if they are within a calibrated temp of one another, the use of a block heater can cause false readings for the PCM. Check with the customer to see if they use a block heater.
Ignition on, engine not running.With the DRBIII®, read DTCs and record the related Freeze Frame data.Is the Good Trip Counter displayed and equal to zero?
  1. Yes --> Go To 2
  2. No --> Refer to the INTERMITTENT CONDITION  symptom in the Driveability category.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .
2 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
NOTE: Visually inspect both the component and the PCM connectors. Look for damaged, partially broken wires, and backed out or corroded terminals.

Ignition on, engine not running.
Measure the voltage on the (K2) ECT Signal circuit in the ECT Sensor harness connector.
Is the voltage above 5.2 volts?
  1. Yes --> Repair the short to battery voltage in the (K2) ECT Signal circuit.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .

  2. No --> Go To 3
3 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
Ignition on, engine not running.
With the DRBIII®, read the ECT Sensor voltage.
Is the voltage above 4.6 volts?
  1. Yes --> Go To 4
  2. No --> Go To 7
4 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
Using a jumper wire, jumper across the ECT Sensor harness connector.
Ignition on, engine not running.
With the DRBIII®, read the ECT Sensor voltage.
Is the voltage below 1.0 volt?
  1. Yes --> Replace the ECT Sensor.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .

  2. No --> Go To 5
5 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.

Measure the resistance of the (K2) ECT Signal circuit from the ECT Sensor harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
  1. Yes --> Go To 6
  2. No --> Repair the open in the (K2) ECT Signal circuit.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .
6 Turn the ignition off.
Disconnect the ECT harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.

Measure the resistance of the (K4) Sensor ground circuit from the ECT Sensor harness connector to the appropriate terminal of special tool # 8815.
Is the resistance below 5.0 ohms?
  1. Yes --> NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Replace and program the Powertrain Control Module in accordance with the Service Information.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .

  2. No --> Repair the open in the (K4) Sensor ground circuit.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .
7 Disconnect the ECT Sensor harness connector.
Turn the ignition off.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K2) ECT Signal circuit in the ECT Sensor harness connector.
Is the resistance below 100 ohms?
  1. Yes --> Repair the short to ground in the (K2) ECT Signal circuit.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .

  2. No --> Go To 8
8 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the (K2) ECT Sensor Signal circuit and the (K4) Sensor ground circuit at the ECT Sensor harness connector.
Is the resistance below 5.0 ohms?
  1. Yes --> Repair the (K4) Sensor ground shorted to the (K2) ECT Sensor Signal circuit.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .

  2. No --> NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Replace and program the Powertrain Control Module in accordance with the Service Information.

    Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC .
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