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Home >> Jeep >> 2018 >> Wrangler Unlimited Moab >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Transmission Control Module (TCM) - DTCS P1D91-00 To U1477-00 >> DTC Troubleshooting >> P1DDE-00-Ignition Run-Start Input 1-2 Correlation >> Possible Causes

Possible Causes

Possible Causes
IGNITION OFF/RUN/START CONTROL OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE
BODY CONTROL MODULE (BCM)
TRANSMISSION CONTROL MODULE (TCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .