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Home >> Jeep >> 2019 >> Renegade High Altitude, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1315 (Radio Frequency Module (RF Hub) - DTCS B1001-21 To C1501-16) >> DTC Troubleshooting >> B1022-01 Passive Entry Of Antenna 2 - General Electrical Failure >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    If there are any antennas that have a Short to Ground or Short to Battery DTC, repair them before proceeding.

    1. Turn the ignition on.
    2. With the scan tool, create a Vehicle Scan Report and attach it to 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 the Active 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 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 Radio Frequency Hub C2 harness connector.

      Is there any voltage present?

      Yes 

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

      No 

      • Go To  4
  4. CHECK THE (D922) PASSIVE ENTRY ANTENNA 2 SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the RF Hub Module C2 harness connector.
    3. Check for continuity between ground and the (D922) Passive Entry Antenna 2 Signal circuit at the Radio Frequency Hub C2 harness connector.

      Is there continuity between ground and the (D922) Passive Entry Antenna 2 Signal circuit?

      Yes 

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

      No 

      • Go To  5
  5. CHECK THE (D923) PASSIVE ENTRY ANTENNA 2 RETURN CIRCUIT FOR A SHORT TO GROUND 
    1. Check for continuity between ground and the (D923) Passive Entry Antenna 2 Return circuit at the Radio Frequency Hub C2 harness connector.

      Is there continuity between ground and the (D923) Passive Entry Antenna 2 Return circuit?

      Yes 

      • Repair the (D923) Passive Entry Antenna 2 Return circuit for a short to ground.

      No 

      • Go To  6
  6. CHECK THE (D922) PASSIVE ENTRY ANTENNA 2 SIGNAL CIRCUIT FOR AN OPEN 
    1. Measure the resistance of the (D922) Passive Entry Antenna 2 Signal circuit between the RF HUB C2 connector and the Passive Entry Antenna 2 connector.

      Is the resistance below 2.0 Ohms?

      Yes 

      • Go To  7

      No 

      • Repair the (D922) Passive Entry Antenna 2 Signal circuit for an open.
  7. CHECK THE (D923) PASSIVE ENTRY ANTENNA 2 RETURN CIRCUIT FOR AN OPEN 
    1. Measure the resistance of the (D923) Passive Entry Antenna 2 Return circuit between the RF HUB C2 connector and the Passive Entry Antenna 2 connector.

      Is the resistance below 2.0 Ohms?

      Yes 

      • Go To  8

      No 

      • Repair the (D923) Passive Entry Antenna 2 Return circuit for an open.
  8. CHECK THE (D922) PASSIVE ENTRY ANTENNA 2 SIGNAL CIRCUIT FOR A SHORT TO THE (D923) PASSIVE ENTRY ANTENNA 2 RETURN CIRCUIT 
    1. Check for continuity between the (D922) Passive Entry Antenna 2 Signal circuit and the (D923) Passive Entry Antenna 2 Return circuit at the RF Hub C2 harness connector.

      Is there continuity between the (D922) Passive Entry Antenna 2 Signal circuit and the (D923) Passive Entry Antenna 2 Return circuit?

      Yes 

      • Repair the (D922) Passive Entry Antenna 2 Signal circuit for a short to the (D923) Passive Entry Antenna 2 Return circuit.

      No 

      • Go To  9
  9. CHECK THE PASSIVE ENTRY ANTENNA 2 AND RF HUB 
    1. Replace the Passive Entry Antenna 2 in accordance with Service Information. Refer to ANTENNA, PASSIVE ENTRY, REMOVAL AND INSTALLATION .
    2. Turn the ignition on.
    3. Using the scan tool, record and erase the DTCs.
    4. With the scan tool, select: RF Hub, More Options and System Tests.
    5. Perform the RF Hub LF Antenna Verification Tests.
    6. With the scan tool, read the Active DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  10

      No 

  10. 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 AND INSTALLATION .
      • 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 HUB (RF HUB) VERIFICATION TEST .

      No 

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