P1777 JEEP Ignition Retard Request Circuit Fault

P1777 JEEP Ignition Retard Request Circuit Fault

Possible causes
– Step Motor harness is open or shorted
– Step Motor poor electrical connection
– Faulty Step Motor
P1777 JEEP Description

The step motor changes the step with turning 4 coils ON/OFF according to the signal from Transmission Control Module (TCM). As a result, the flow of line pressure to primary pulley is changed and pulley ratio is controlled

JEEP Vehicle:JEEP Commander,JEEP Compass,JEEP Grand Cherokee,JEEP Liberty,JEEP Patriot,JEEP Wrangler,JEEP Wrangler Unlimited,
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