Diagnostic Test
WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK THE ENGINE COOLANT LEVEL NOTE:
If there are DTCs present for the DEF Tank Temperature Sensor or DEF Engine Coolant Control Valve, perform those diagnostic procedures before continuing with this test procedure.
- Turn the ignition off.
- Verify the engine coolant level.
Is the engine coolant level above the minimum?
Yes
- Go To 2.
No
- Fill the engine coolant to the proper level.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
- CHECK FOR BLOCKED OR RESTRICTED ENGINE COOLANT LINES/HOSES
- Visually inspect the engine coolant supply and return lines for signs of a restriction of leaks.
Were any restrictions or leaks found?
Yes
- Repair or replace the engine coolant lines in accordance with the service information.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
No
- Go To 3.
- Visually inspect the engine coolant supply and return lines for signs of a restriction of leaks.
- CHECK FOR BLOCKED OR RESTRICTED DIESEL EXHAUST FLUID TANK HEATER
- Remove the coolant lines at the DEF Tank Heater Coil.
- Blow regulated low pressure shop air through the DEF Tank Heater Coil.
Were any restrictions found?
Yes
- Replace the DEF Tank Heater Coil in accordance with the service information. Refer to SENSOR, Diesel Exhaust Fluid Level/Temperature , Removal .
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
No
- Replace the DEF Engine Coolant Control Valve in accordance with the service information. Refer to VALVE, Diesel Exhaust Fluid Engine Coolant Control , Removal .
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .