- Faulty Step Motor
- Step Motor harness is open or shorted
- Step Motor poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
P1777 Infiniti DescriptionThe 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
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