Diagnostic Test

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

CHECK FOR AN ACTIVE DTC
1. Start the engine and allow it to idle.
2. With a scan tool, read DTCs.
  Is the DTC active or pending?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK FOR EXCESSIVE RESISTANCE IN THE (A501) FUSED B+ CIRCUIT
1. Turn the ignition off.
  NOTE:
  Before continuing to the next step, confirm that the Charge Air Cooler Coolant Pump harness connector was properly installed before disconnecting it.
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 fused B+ circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK FOR EXCESSIVE RESISTANCE IN THE CAC (Z901) GROUND CIRCUIT
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
  - Go To 5
CHARGE AIR COOLER COOLANT PUMP
1. Replace the Charge Air Cooler Coolant Pump in accordance with the Service Information.
2. Reconnect the PCM harness connector.
3. Turn the ignition on.
4. With the scan tool erase DTCs.
5. Start the engine.
6. With the scan tool read DTCs
  Did the DTC return?
  
  Yes
  - Go To 6
  No
  - Repair complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
POWERTRAIN CONTROL MODULE (PCM)
1. Turn the ignition off.
2. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the 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 and program the Powertrain Control Module in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .