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Home >> Jeep >> 2021 >> Compass Latitude, FWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> (Right Blind Spot Sensor Module (BSM) (RBSS) - Electrical Diagnostics) >> Diagnosis And Testing >> B22A9-02-Ecu Internal Performance-General Signal Failure >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. With the scan tool, read RBSS DTCs and record on the repair order.
    2. With the scan tool, erase DTCs.
    3. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    4. With the scan tool, read RBSS DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

  2. CHECK BOTH OF THE (Z943) GROUND CIRCUITS FOR EXCESSIVE RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the Right Blind Spot Sensor harness connector.
      NOTE:

      The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.

    3. Check both of the (Z943) Ground circuits with a test light to a known good B+ feed.

      Does the test light illuminate brightly?

      Yes 

      • Go To  3

      No 

      • Repair the (Z943) Ground circuit(s) for excessive resistance or open circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  3. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all RBSS 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 RBSS 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 Environmental Data, 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 RBSS DTCs.

      Did the DTC return?

      Yes 

      No