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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 571 (Nag1 Automatic Transmission - Electrical Diagnostics) >> DTC Troubleshooting >> P1631-TCM Internal- Processor Clock Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
  1. 1)  TRANSMISSION CONTROL MODULE 

    View repair 

    Repair 

    1. 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 the TCM per the Service Information. Refer to ELECTRONIC CONTROL MODULES - SERVICE INFORMATION for the appropriate service procedures.
    2. Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1 .
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