Avenger L4-2.4L (2009)
6. (K900) SENSOR GROUND CIRCUIT HIGH RESISTANCE
1. Turn the ignition off.
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 PCM Pinout Box 8815 along with the Adapter 8815-1 to perform the diagnosis.
2. Using a voltmeter, perform a voltage drop test by backprobing the (K900) Sensor Ground circuit at the Engine Coolant Temperature Sensor
harness connector and by probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive
polarity is displayed on the voltmeter.
WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not
wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
3. Start the engine.
Is the voltage below 0.5 volts?
Yes
-
Go To 7
No
-
Repair the (K900) Sensor Ground circuit for excessive resistance.
-
Perform the PCM Verification Test. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble
Code Tests and Associated Procedures/Verification Tests/PCM Verification Test.
7. ENGINE COOLANT TEMPERATURE SENSOR
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Engine Coolant Temperature Sensor and the
Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals.
4. Search for any Technical Service Bulletins that may apply.
Were any problems found?
Yes
-
Repair as necessary.
-
Perform the PCM Verification Test. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble
Code Tests and Associated Procedures/Verification Tests/PCM Verification Test.
No
-
Replace the Engine Coolant Temperature Sensor.
-
Perform the PCM Verification Test. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble
Code Tests and Associated Procedures/Verification Tests/PCM Verification Test.
