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Home >> Jeep >> 2014 >> Wrangler Sport, Automatic Trans >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> U1420-Implausible Electronic Gear Select Signal Received >> When Monitored

When Monitored

TCM supply voltage is between 10 and 16 volts.

Ignition switch Run position signal is detected via dedicated circuit to TCM.

Engine speed (CAN message) is greater than or equal to 550 rpm.

The above conditions are met for 5 seconds.

There are no ignition switch failures.

There are no CAN bus or CAN message failures between the TCM and BCM.

Monitored continuously once the conditions are met.