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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Radio Frequency Module (RF Hub) - DTCS B1001-21 To B1045-01 >> DTC Troubleshooting >> B1022-12 Passive Entry Of Antenna 2 - Circuit Short To Battery >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    Verify that the vehicle's 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 vehicle's battery is not fully charged, correct this condition before proceeding.

    NOTE:

    If another antenna has a Short to Ground, General Electrical Failure or Open DTC, both antennas will set this Short to Voltage DTC.

    1. Turn the ignition on.
    2. With the scan tool, read RF Hub DTCs and record on the repair order.
    3. With the scan tool, select: RF Hub, More Options and System Tests.
    4. Perform the RF Hub LF Antenna Verification Tests.
    5. With the scan tool, read RF Hub DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (D922) PASSIVE ENTRY ANTENNA 2 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    1. Turn the ignition off.
    2. Disconnect the Radio Frequency Hub C2 harness connector.
    3. Turn the ignition on.
      NOTE:

      To turn the ignition on for the Passive Entry Keyless Go (PEKG)/Keyless Ignition Node (KIN) system when the RF Hub C2 connector is disconnected, use the rounded end of the FOBIK to press the Stop/Start button.

    4. Measure the voltage between ground and the (D922) Passive Entry Antenna 2 Signal circuit at the Radio Frequency Hub C2 harness connector.

      Is there any voltage present?

      Yes 

      • Repair the (D922) Passive Entry Antenna 2 Signal circuit for a short to voltage.

      No 

      • Go To  3
  3. CHECK THE (D923) PASSIVE ENTRY ANTENNA 2 RETURN CIRCUIT FOR A SHORT TO VOLTAGE 
    1. Measure the voltage between ground and the (D923) Passive Entry Antenna 2 Return circuit at the RF Hub C2 harness connector.

      Is there any voltage present?

      Yes 

      • Repair the (D923) Passive Entry Antenna 2 Return circuit short to voltage.

      No 

      • Go To  4
  4. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all RF Hub 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.
      • Perform a terminal drag test on each connector terminal to verify proper terminal tension.

      Repair any conditions that are found.

    5. Reconnect all RF Hub Module harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect 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. Using the recorded Vehicle Scan Report, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    10. With the scan tool, read RF Hub DTCs.

      Did the DTC return?

      Yes 

      • Replace the Radio Frequency Hub (RF Hub) Module in accordance with the Service Information. Refer to MODULE, RADIO FREQUENCY (RF HUB), REMOVAL .
      • If this vehicle is equipped with a Steering Column Lock Module (BUX), it must also be replaced in accordance with the Service Information. When replacing the RF-Hub and the Steering Column Lock Module, the RF-Hub MUST be programmed BEFORE the Steering Column Lock Module (ELV) is programmed.
      • Replace the Steering Column Lock Module (ELV/ESCL) in accordance with the Service Information.
      • Perform the RADIO FREQUENCY HUB VERIFICATION TEST. Refer to RADIO FREQUENCY (RF HUB) VERIFICATION TEST .

      No 

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