Pinpoint Test B : Pinpoint Test
WARNING: This page is about a different variant/trim than selected.
- B1 CARRY OUT INSPECTION AND VERIFICATION
- Carry out the Inspection and Verification procedure.
Are any concerns present?
Yes REPAIR as needed. No GO to B2 - B2 CHECK FOR PCM (POWERTRAIN CONTROL MODULE) DTCS
- Ignition ON.
- Using a scan tool, perform PCM self-test.
Is DTC P0217 reported?
Yes GO to B3 No If the engine overheating symptoms are present or if coolant is low from an overheat GO to B3 If actual engine overheating has not been verified CHECK the engine coolant temperature gauge operation. Refer to: Instrumentation, Message Center and Warning Chimes . If any other PCM DTCs are retrieved, REFER to: Electronic Engine Controls . - B3 CHECK FOR ACTIVE GRILL SHUDDER DTCS
- Review the PCM DTCs.
Are any active grill shudder DTCs present?
Yes REFER to: Active Grille Shutter . No GO to B4 - B4 CHECK FOR AN AIRFLOW OBSTRUCTION AND MISSING AIR DEFLECTORSNOTE: Verify no vehicle front end damage is present.
- Check the radiator or A/C condenser for an external obstruction such as leaves or cardboard and verify all air deflectors are present.
Is an airflow obstruction present or air deflectors missing?
Yes REPAIR as necessary. No GO to B5 - B5 CHECK THE ELECTRIC COOLING FAN OPERATION
- Start the engine.
- Place the climate control function selector in the MAX A/C position and the blower motor switch in the HI position.
Did the electric cooling fan operate?
Yes GO to B6 No DIAGNOSE the electric cooling fan operation. Refer to Engine Controls - Symptom Charts (Except Diesel & Hybrid) . - B6 PRESSURE TEST THE DEGAS BOTTLE CAP
- Ignition OFF.
- Pressure test the degas bottle cap. Refer to Cooling System Pressure Test .
Does the cap pass the pressure test?
Yes GO to B7 No INSTALL a new cap. If the engine overheat concern persists GO to B7 - B7 CHECK THE ENGINE COOLANT LEVEL AND PRESSURE TEST THE ENGINE COOLING SYSTEMNOTE: Allow the engine to cool before checking the engine coolant level.
- Ignition OFF.
- Visually inspect the engine coolant level at the degas bottle and adjust as necessary. Pressure test the engine cooling system. Refer to Cooling System Pressure Test .
Does the pressure maintain 124 - 138 kPa (18 - 20 PSI) for a minimum of 2 minutes?
Yes GO to B10 No For external coolant leaks REPAIR or INSTALL new components. If no external leaks are present GO to B8 - B8 CHECK THE ENGINE COOLANT FOR AN INTERNAL LEAK
- Inspect the engine coolant in the coolant expansion tank for signs of engine oil.
Is engine oil evident in the coolant?
Yes REFER to: Engine . No GO to B9 - B9 CHECK THE ENGINE OIL FOR COOLANT
- Remove the oil level indicator from the engine.
Is coolant evident in the oil?
Yes REFER to: Engine . No GO to B10 - B10 CHECK THE COOLING SYSTEM FOR COMBUSTION GASESNOTE: Use UView Combustion Leak Tester part number UVU560000-R or equivalent.
- Using a cooling system combustion gas leak tester, following the instructions supplied with the tester, check the coolant for combustion gases.
Are combustion gases present?
Yes REFER to: Engine . No GO to B11 - B11 VISUALLY INSPECT THE THERMOSTAT
- Carry out the Thermostat Visual Inspection.
Is the thermostat damaged?
Yes INSTALL a new thermostat housing. Refer to: Thermostat Housing . No INSTALL a new thermostat housing. Refer to: Thermostat Housing . If the engine still overheats, GO to B12 - B12 VISUALLY INSPECT THE CYLINDER BLOCK THERMOSTAT
- Carry out the Thermostat Visual Inspection.
Is the cylinder block thermostat damaged?
Yes INSTALL a new cylinder block thermostat. Refer to: Cylinder Block Thermostat . No INSTALL a new cylinder block thermostat. Refer to: Cylinder Block Thermostat . If the engine still overheats, INSTALL a new radiator. REFER to: Radiator .