Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on, engine not running.
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 THE (N11) FPCM PWM CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
1. Leave the ignition on, engine not running.
2. Disconnect the FPCM harness connector.
3. Measure the voltage between ground and the (N11) PWM Control circuit at the FPCM harness connector.
  Does the voltage measure above 5.2 volts?
  
  Yes
  - Repair the (N11) FPCM PWM Control circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (N11) FPCM PWM CONTROL CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
3. Measure the resistance between ground and the (N11) FPCM PWM Control circuit at the FPCM harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Repair the (N11) FPCM PWM Control circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (N11) FPCM PWM CONTROL CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Leave the ignition off.
2. Measure the resistance of the (N11) FPCM PWM Control circuit between the FPCM harness connector and the PCM C1 harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Replace the Powertrain Control Module in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Repair the (N11) FPCM PWM Control circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .