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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 105 ((Antilock Brake System (Abs) - Electrical Diagnostics)) >> DTC Troubleshooting >> U0401-00-Implausible Data Received From ECM/Pcm >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. 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. With the scan tool, read ABS DTCs and record on the repair order.
    4. Cycle the ignition switch from off to on.
    5. With the scan tool, read ABS DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

  2. CHECK IF POWERTRAIN CONTROL MODULE DTCS ARE PRESENT 
    1. With the scan tool, read the PCM DTCs.

      Are there any PCM DTCs present?

      Yes 

      • Perform the appropriate diagnostic procedures. Refer to DTC INDEX .

      No 

      • Go To  3
  3. CHECK OTHER MODULES FOR CAN BUS DTCS 
    1. With the scan tool, read the DTCs.

      Are there any CAN BUS DTCs present?

      Yes 

      • Using the schematics as a guide, check the Powertrain Control Module (PCM) pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .

      No 

      • Using the schematics as a guide, check the Anti-lock Brake System (ABS) Module pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Anti-lock Brake System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM, REMOVAL .
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .