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Home >> Jeep >> 2018 >> Grand Cherokee Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (3.0L Diesel - DTCS P24F3-00 To U3017-00) >> DTC Troubleshooting >> U0429-00-Implausible Data Received From SCM >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK THE BCM FOR CAN BUS DTCS 
    1. With the scan tool, read BCM DTCs.

      Are any BCM CAN bus DTCs present?

      Yes 

      No 

      • Go To  2
  2. CHECK THE STEERING CONTROL MODULE (SCM) FOR DTCS 
    1. With the scan tool, read SCM DTCs.

      Are any SCM DTCs present?

      Yes 

      • Repair SCM DTC(s) in accordance with the Service Information.
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No 

      • Using the schematics as a guide, check the Transmission Control Module Assembly (TCMA) terminals for corrosion, damage, and pushed out terminals. Pay particular attention to the power and ground circuits. If no problems are found, replace and program the TCMA in accordance with the Service Information. Refer to VALVE BODY, REMOVAL .
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to PCM VERIFICATION TEST .