Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK FOR AN ACTIVE DTC
1. Start the engine and test drive the vehicle.
  NOTE:
  The vehicle must be driven in order to get the Charge Air Cooler Pump speed high enough for the diagnostic to run.
2. With a scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK THE (A501) FUSED B+ CIRCUIT FOR AN OPEN/HIGH RESISTANCE
NOTE:
Verify the integrity of the (A501) Fused B+ supply Fuse.
1. Turn the ignition off.
2. Disconnect the Charge Air Cooler Coolant Pump harness connector.
3. Disconnect the Power Distribution Center (PDC) C2 harness connector.
4. Measure the resistance of the (A501) Fused B+ circuit between the Charge Air Cooler Coolant Pump harness connector and the Power Distribution Center (PDC) C2 harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 3
  No
  - Repair the Charge Air Cooler Coolant Pump (A501) Fused B+ circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK THE (Z901) GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance between ground and the (Z901) Ground circuit at the Charge Air Cooler Coolant Pump harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (Z901) Ground circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
INSPECT THE CHARGE AIR COOLER COOLANT PUMP WIRING AND CONNECTORS
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Charge Air Cooler Coolant Pump and the Powertrain Control Module (PCM).
  NOTE:
  When inspecting wiring and connectors be sure to include inspection of midline connectors in the circuit.
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for any loose, or partially broken ground wires.
4. Check for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Charge Air Cooler Coolant Pump and Powertrain Control Module connectors.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace the Charge Air Cooler Coolant Pump in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .