Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

WATER IN WIF SENSOR 2
1. Turn the ignition off.
2. Disconnect the WIF Sensor 2 harness connector.
3. Ignition on, engine not running.
  NOTE:
  Check connectors - Clean/repair as necessary.
4. Measure the voltage between the (K303) WIF Sensor 2 circuit and the (K900) Sensor ground circuit at the WIF Sensor 2 harness connector.
  Is the voltage between 4.5 and 5.5 Volts?
  
  Yes
  - Replace the Water in Fuel Sensor 2 in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 2
CHECK FOR THE (K303) WIF SENSOR 2 SIGNAL CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT
1. Disconnect the PCM C1 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
2. Measure the resistance between the (K303) WIF Sensor 2 Signal circuit and the (K900) Sensor Ground circuit of the WIF Sensor harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the short between the (K303) WIF Sensor 2 Signal circuit and the (K900) Sensor Ground circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3
CHECK THE (K303) WIF SENSOR 2 SIGNAL CIRCUIT FOR A SHORT TO GROUND
1. Measure the resistance between ground and the (K303) WIF Sensor 2 Signal circuit at the WIF Sensor 2 harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the (K303) WIF Sensor 2 Signal for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4
WATER IN WIF SENSOR 1
1. Turn the ignition off.
2. Reconnect the PCM C1 harness connector.
3. Ignition on, engine not running.
  NOTE:
  Check connectors - Clean/repair as necessary.
4. Measure the voltage between the (G123) Water in Fuel Signal circuit and the (K914) Sensor ground circuit at the WIF Sensor 1 harness connector.
  Is the voltage between 4.5 and 5.5 Volts?
  
  Yes
  - Replace the Water in Fuel Sensor 1 in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 5
CHECK FOR THE (G123) WIF SENSOR 1 SIGNAL CIRCUIT SHORTED TO (K914) SENSOR GROUND CIRCUIT
1. Disconnect the PCM C1 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
2. Measure the resistance between the (G123) WIF Sensor 1 Signal circuit and the (K914) Sensor Ground circuit of the WIF Sensor 1 harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the short between the (G123) WIF Sensor 1 Signal circuit and the (K914) Sensor Ground circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 6
CHECK THE (G123) WIF SENSOR 1 SIGNAL CIRCUIT FOR A SHORT TO GROUND
1. Measure the resistance between ground and the (G123) WIF Sensor 1 Signal circuit at the WIF Sensor 1 harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the (G123) WIF Sensor 1 Signal for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Replace and program the Powertrain Control Module in accordance with the service information. Refer to MODULE, POWERTRAIN CONTROL, 6.7L DIESEL, REMOVAL . Refer to PCM/ECM/TCM PROGRAMMING .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .