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Home >> Dodge and Ram >> 2022 >> ProMaster 3500 Van Cargo >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Audio (Radio) (ETM) - DTCS B1400-11 To B1562-12 >> Diagnosis And Testing >> B1408-13-Rear Left Audio Speaker Output-Circuit Open >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN INTERMITTENT CONDITION 
    1. Turn the ignition on.
    2. Using the scan tool, record and erase the Radio DTCs.
    3. Turn the Radio on.
    4. Adjust the speakers to the rear and center.
    5. Using the scan tool, read the active Radio DTCs.

      Does the scan tool read: B1408-13-REAR LEFT AUDIO SPEAKER OUTPUT - CIRCUIT OPEN?

      Yes 

      • Go To  2

      No 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the appropriate 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.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  2. CHECK THE LEFT REAR SPEAKER 
    1. Turn the ignition off.
    2. Disconnect the Left Rear Speaker.
    3. Measure the resistance of the speaker between the two terminals.

      Is the resistance above 5.0 Ohms?

      Yes 

      • Replace the Left Rear Speaker in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK THE (X205) LEFT REAR SPEAKER (+) CIRCUIT FOR AN OPEN 
    1. Disconnect the Radio C1 harness connector.
    2. Measure the resistance of (X205) Left Rear Speaker (+) circuit between the Radio C1 connector, and the Left Rear Speaker harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Repair an open in the (X205) Left Rear Speaker (+) circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  4. CHECK THE (X295) LEFT REAR SPEAKER (-) CIRCUIT FOR AN OPEN 
    1. Measure the resistance of (X295) Left Rear Speaker (-) circuit between the Radio C1 connector, and the Left Rear Speaker harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Replace the Radio in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Repair an open in the (X295) Left Rear Speaker (-) circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
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