Diagnostic Test

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Other DTCS Present
1. Turn The Ignition On.
2. With The Scan Tool, Read DTCS.
  Are Any Of The Exhaust Gas Temperature (Egt) Sensor (1/1, 1/2, 1/3, 1/4, Or 1/5) Low Or High DTCS Present?
  
  Yes
  - Repair The Other DTCS Before Proceeding.
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To INTERMITTENT CONDITION .
  No
  - Go To 2
Check The (K185) Exhaust Gas Temperature Sensor 1/1 Signal Circuit For An Open/ High Resistance
1. Turn The Ignition Off.
2. Disconnect The PCM C2 Harness Connector.
3. Disconnect The Exhaust Gas Temperature Sensor 1/1 Harness Connector.
  NOTE:
  Check Connectors-Clean/Repair As Necessary.
4. Measure The Resistance Of The (K185) Exhaust Gas Temperature Sensor 1/1 Signal Circuit Between The Exhaust Gas Temperature Sensor 1/1 Harness Connector And The PCM C2 Harness Connector.
  Is The Resistance Below 3.0 Ohms?
  
  Yes
  - Go To 3
  No
  - Repair The (K185) Exhaust Gas Temperature Sensor 1/1 Signal Circuit For An Open Or High Resistance.
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To INTERMITTENT CONDITION .
Check The (K900) Exhaust Gas Temperature Sensor 1/1 Sensor Ground Circuit For An Open/High Resistance
1. Measure The Resistance Of The (K900) Sensor Ground Circuit Between The Exhaust Gas Temperature Sensor 1/1 Harness Connector And The PCM C2 Harness Connector.
  Is The Resistance Below 3.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair The (K900) Sensor Ground Circuit For An Open Or High Resistance.
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To INTERMITTENT CONDITION .
Check The Exhaust Temperature
1. Reconnect The PCM C2 Connector And The Egt Sensor Harness Connector.
2. With The Scan Tool, Read The Exhaust Temperature Sensors To Determine The Exhaust Temperature.
  Is The Temperature Reading Above 107°C (225°F)?
  
  Yes
  - Go To 5
  No
  - Go To 6
Compare All Egt Sensor Values At 2500 Rpms
1. Start The Engine.
2. Raise The Engine Speed To 2500 Rpms For Two Minutes.
  Do The Temperature Readings Of The Egt Sensors Change In Value At Least 15°C (5°F)?
  
  Yes
  - Perform The INTERMITTENT CONDITION Diagnostic Procedure. Refer To INTERMITTENT CONDITION .
  No
  - Replace The Exhaust Temperature Sensor That Did Not Change In Value By At Least 15°C (5°F) Or Is Not Updating.
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To INTERMITTENT CONDITION .
Compare All Egt Sensor Values At Idle After 10 Minutes
1. Start The Engine And Allow It To Idle For 10 Minutes.
2. With The Scan Tool, Read The Values Of All Egt Sensors.
  Do The Sensors Read Above 65°C (150°F) And Are The Values Of All Sensors Updating?
  
  Yes
  - Perform The INTERMITTENT CONDITION Diagnostic Procedure. Refer To INTERMITTENT CONDITION .
  No
  - Replace The Exhaust Gas Temperature Sensor That Is Not Above 65°C (150°F) Or Is Not Updating On The Scan Tool.
  - Perform The POWERTRAIN VERIFICATION TEST. Refer To INTERMITTENT CONDITION .