Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
NOTE:
Verify that the battery is fully charged with a DVOM and use the scan tool to compare the Battery Voltage listed under "Data" in the RFH View to that of the BCM. If the battery is not fully charged, correct this condition before proceeding.

NOTE:
Perform any active communication DTC test's for the Radio Frequency Hub (RFH) Module before proceeding with this test.
1. Turn the ignition on.
2. With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
3. Turn the ignition off and wait 30 seconds.
4. Turn the ignition on and attempt to start the engine.
5. If the engine started, wait 10 seconds then cycle the ignition off.
6. Turn the ignition on.
7. With the scan tool, read the active DTCs.
  Is the DTC active?
  
  Yes
  - Go to 2
  No
  - Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and poor pin fit before proceeding.
CHECK THE (G20) IGNITION RUN / START SWITCH SENSE CIRCUIT
1. Turn the ignition off.
2. Disconnect the RF Hub connector.
3. Turn the ignition on.
4. Using a DVOM; at the RF Hub connector, check the (G20) Ignition Run/Start Switch Sense circuit for battery voltage the RF Hub connector.
  NOTE:
  Compare the voltage to that of a direct connection to the battery.
  
  Is the voltage within. volts?
  
  Yes
  - Go to 3
  No
  - Repair the (G20) Ignition Run / Start Switch Sense circuit for an open/excessive resistance.
CHECK THE (G20) IGNITION RUN / START SWITCH SENSE CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the KIN/IGNM connector.
3. Disconnect the RF Hub connector.
4. Check the G20 Ignition Run / Start Switch Sense circuit for a short to voltage at the RF Hub connector.
  Is there any voltage present?
  
  Yes
  - Repair the (G20) Ignition Run / Start Switch Sense circuit for a short to voltage.
  No
  - Go to 4
CHECK THE (G20) IGNITION RUN / START SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND
1. Check for continuity between ground and the (G20) Ignition Run / Start Switch Sense circuit at the RF Hub connector.
  Is the continuity between ground and the (G20) Ignition Run / Start Switch Sense circuit ?
  
  Yes
  - Repair the (G20) Ignition Run / Start Switch Sense circuit for a short to ground.
  No
  - Go to 5
CHECK THE RF HUB
1. If equipped with a Keyless Ignition Node (KIN), replace it in accordance with Service Information. Refer to MODULE, KEYLESS IGNITION NODE, REMOVAL . If equipped with an Ignition Node Module (IGNM), replace it in accordance with Service Information.
2. Turn the ignition on and attempt to start the engine.
3. If the engine started, wait 10 seconds then turn the ignition off.
4. Turn the ignition on.
5. With the scan tool, read the active DTCs.
  Did the DTC return?
  
  Yes
  - Replace the RF Hub in accordance with the Service Information. Refer to MODULE, RADIO FREQUENCY (RF HUB), REMOVAL .
  - Perform the RADIO FREQUENCY HUB (RF HUB) VERIFICATION TEST. Refer to RADIO FREQUENCY HUB (RF HUB) VERIFICATION TEST .
  No
  - The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension and repair as necessary. If no problems are found, test complete.