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Home >> Jeep >> 2018 >> Grand Cherokee Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 46 (8HP45/845RE Automatic Transmission - DTCS P1D94-00 To U1479-00) >> DTC Troubleshooting >> P1DB0-00-Implausible Torque Request Signal Sent >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR BODY CONTROL MODULE (BCM) CONTROLLER AREA NETWORK (CAN) BUS DIAGNOSTIC TROUBLE CODES (DTCS) 
    1. With the scan tool, read BCM DTCs.

      Are any BCM CAN bus DTCs set?

      Yes 

      No 

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

      Are any PCM DTCs set?

      Yes 

      No 

      • Using the schematics as a guide, check the TCM connector and all related in-line connector terminals for corrosion, damage, or pushed out terminals. Pay particular attention to the power and ground circuits. If no problems are found, replace and program the TCM in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL, MODULE PROGRAMMING .
      • Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
      • Test complete.