Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK FOR OTHER DTCS
1. Refer to the recorded DTCs.
  Are there any Fuel Delivery DTCs present?
  
  Yes
  - Perform the applicable diagnostic procedure(s). Refer to DIAGNOSTIC CODE INDEX .
  No
  - Go To 3
CHECK THE FUEL PUMP RELAY (N15) OUTPUT CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the FPCM 2 harness connector.
3. Remove the Fuel Pump Relay.
4. Check for continuity between ground and the Fuel Pump Relay (N15) Output circuit at the FPCM 2 harness connector.
  Is there continuity between ground and the Fuel Pump Relay (N15) Output circuit?
  
  Yes
  - Repair the Fuel Pump Relay (N15) Output circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CHECK THE FUEL PUMP RELAY (N15) OUTPUT CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Check for continuity of the Fuel Pump Relay (N15) Output circuit between the FPCM 2 harness connector and the terminal 87 of the Fuel Pump Relay connector in the PDC.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the Fuel Pump Relay (N15) Output circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
FUEL PUMP CONTROL MODULE 2
1. Reconnect the Fuel Pump relay.
2. Turn the ignition on, engine not running.
3. With the scan tool, begin the Variable Speed Fuel Pump Relay Actuation Test.
4. Measure the voltage between ground and the Fuel Pump Relay (N15) Output circuit at the FPCM 2 harness connector.
  Is the voltage equal to battery voltage?
  
  Yes
  - Replace the Fuel Pump Control Module 2 in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace the Fuel Pump Relay in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .