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Home >> Chrysler >> 2021 >> Voyager LX, Gas >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> (Driver Door Module (DDM) (DMFL/R) - Electrical Diagnostics) >> DTC Troubleshooting >> B210C-16-Battery Voltage Input - Circuit Voltage Below Threshold >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
    2. With the scan tool, read PCM DTCs.

      Are there any Charging or Battery DTCs present?

      Yes 

      No 

      • Go To  2
  2. CHECK THE DRIVER DOOR MODULE 
    1. With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
    2. Start the engine and run for two minutes.
    3. With the scan tool, read DDM DTCs.

      Is the DTC active?

      Yes 

      • Go To  3

      No 

  3. CHECK THE (A924) FUSED B(+) OR (Z915) GROUND CIRCUITS FOR HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the Driver Door Module C3 harness connector.
    3. With a 12-volt test light connected to the (Z915) Ground circuit, check the (A924) Fused B(+) circuit at the Driver Door Module C3 harness connector.
      NOTE:

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

      Does the test light illuminate brightly?

      Yes 

      • Go To  4

      No 

      • Test the (A924) Fused B(+) and the (Z915) Ground circuits to determine which one has the high resistance. Repair the circuit for high resistance.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  4. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all Driver Door Module 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 Driver Door 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 DDM DTCs.

      Did the DTC return?

      Yes 

      No