LEMON Manuals: Even more car manuals for everyone
Home >> Dodge and Ram >> 2024 >> ProMaster 2500 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 42 (Brake System Control Module (BSCM) - DTCS U1106-00 To U35B9-00) >> DTC Troubleshooting >> U1106-00 Can C Signal Missing >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2024 RAM ProMaster EV. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    This DTC must be active for the results of this test to be valid. 

    1. Perform any Service Bulletins that may apply.
    2. Turn the ignition on.
    3. For future reference, with the scan tool, run and save a vehicle Scan Report and all related recorded data.
    4. With the scan tool, read DTCs and record on the repair order.
    5. With the scan tool, read and record Environmental Data to help identify the conditions in which the DTC was set.
    6. With the scan tool, erase all DTCs.
    7. Turn the ignition off for a minimum of 10.0 seconds.
    8. Start the vehicle
    9. Press the brake pedal firmly and release.
    10. With the scan tool, read BSCM DTCs.

      Is the DTC active?

      Yes 

      • Go To Next Step.

      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.
      • Perform the BSCM-INTERMITTENT CONDITION TEST. Refer to BSCM INTERMITTENT CONDITION .
  2. CHECK FOR BCM CAN BUS DTCS 
    1. With the scan tool, read BCM DTCs.

      Are any BCM CAN BUS DTC's present?

      Yes 

      • Refer to DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure. Perform the diagnostic procedure for DTC U0001-CAN C BUS first if it is present.
      • Perform C635 DDCT TRANSMISSION VERIFICATION TEST. Refer to the appropriate Diagnostic Information .

      No 

      • Go To Next Step.
  3. CHECK IF ENGINE DTC'S ARE PRESENT 
    1. With the scan tool, read engine DTCs.

      Are any engine DTC's present?

      Yes 

      • Refer to the appropriate Diagnostic Information and perform the appropriate diagnostic procedure.
      • Perform C635 DDCT TRANSMISSION VERIFICATION TEST. Refer to the appropriate Diagnostic Information .

      No 

      • Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the TCM in accordance to the Service Information.
      • Perform C635 DDCT TRANSMISSION VERIFICATION TEST. Refer to the appropriate Diagnostic Information .
  4. CHECK RELATED HARNESS CONNECTIONS ON THE BRAKE SYSTEM CONTROL MODULE (BSCM) 
    1. Turn the ignition off.
    2. Disconnect the BSCM harness connector.
    3. Disconnect all related in-line harness connections (if equipped).
    4. Disconnect the related component harness connectors.
    5. 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.

    6. Connect the BSCM harness connector. Be certain that the harness connector is fully seated and the connector lock is fully engaged.
    7. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. Connect the related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    9. With the scan tool, erase DTCs.
      WARNING:

      To avoid possible serious or fatal injury, check brake capability is available before road testing.

    10. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    11. With the scan tool, read BSCM DTCs.

      Did the DTC return?

      Yes 

      No 

      • The wiring or poor connection problem has been repaired.
      • Perform the BSCM VERIFICATION TEST. Refer to BSCM VERIFICATION TEST .
scientia non olet · About LEMON Manuals