Diagnostic Test

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

DTC IS ACTIVE
1. With the scan tool, record any environmental data and record all DTCs on the repair order.
2. With the scan tool, erase DTCs in the PCM.
3. Start the engine and allow the engine to reach normal operating temperature.
  NOTE:
  It may be necessary to test drive the vehicle to activate the SCR system.
4. Monitor the scan tool for at least two minutes.
5. With the scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
CHECK FOR OTHER DTCS
1. Refer to the recorded DTCs.
  NOTE:
  Inspect the Diesel Exhaust Fluid before continuing with this Diagnostic Tree. If there is evidence of contamination or degraded fluid; Perform the Diagnostic and Testing - Diesel Exhaust Fluid procedure.
  
  Refer to DIESEL EXHAUST FLUID EMISSIONS, DIAGNOSIS AND TESTING .
  
  Ignition on, engine not running.
  
  Are there any other DEF Supply Pump DTCs or are DTCs P208A, P208C, or P208D active or pending?
  
  Yes
  - Perform the applicable diagnostic procedure(s). Refer to DIAGNOSTIC CODE INDEX .
  No
  - Go To 3
CHECK THE DEF PUMP SUPPLY LINES FOR LEAKS
1. Turn the ignition off.
2. Visually inspect the DEF Pump Supply lines for leaks.
  Are there any leaks present?
  
  Yes
  - Repair the DEF Pump Supply line(s) that are leaking. Reset the SCR Timer: Using the scan tool, go to Misc. Functions>SCR Extend Mileage W Active Fault (and reset the Timer). Also, test drive the vehicle for 30 miles before beginning the PCM VERIFICATION Test. Then, begin this Diagnostics again starting with the 'DTC IS ACTIVE' Test Step.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 4
CHECK THE DEF INJECTOR FOR PROPER OPERATION
1. Turn the ignition off.
2. Remove the DEF Injector and place in a clean container.
3. Turn the ignition on.
4. With the scan tool, navigate to Systems Tests and actuate the DEF Injector Quantity Test.
  NOTE:
  When the DEF Injector (Dosing Valve) Actuator Test is initiated, the DEF Injector is opened. Wait 30 seconds before checking for leaks.
5. Check the DEF Injector for a leak.
  Is the DEF Injector leaking?
  
  Yes
  - Replace the DEF Injector. Reset the SCR Timer: Using the scan tool, go to Misc. Functions>SCR Extend Mileage W Active Fault (and reset the Timer). Also, test drive the vehicle for 30 miles before beginning the PCM VERIFICATION Test.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 5
CHECK THE DEF PUMP FOR PROPER OPERATION
1. Replace the DEF Pump in accordance with the service information.
2. Ignition on, engine not running.
3. With the scan tool, erase DTCs in the PCM.
4. Start the engine.
5. Allow the engine to reach normal operating temperature.
6. Monitor the scan tool for at least two minutes.
7. With the scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 6
  No
  - Test Complete. Reset the SCR Timer: Using the scan tool, go to Misc. Functions>SCR Extend Mileage W Active Fault (and reset the Timer). Also, test drive the vehicle for 30 miles before beginning the PCM VERIFICATION Test.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all PCM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Check for spread terminals and verify proper terminal tension.
  Repair any conditions that are found.
5. Connect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Connect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
10. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Repair the poor connections.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .