P1777 INFINITI, NISSAN: STEP MOTOR CIRCUIT
POST UPDATED IN January, 2023
P1777 INFINITI, NISSAN: STEP MOTOR CIRCUIT
A stepper motor is known as a brushless DC device that divides a complete rotation into an equal number of steps.
These motors change pitch with the activation and deactivation of 4 coils, taking into account the signal provided by the Transmission Control Module (TCM). This results in the flow of line pressure to the primary pulley changing and consequently, the pulley ratio is controlled.
Diagnostic code P1777 OBD2 is set when a fault is detected in the stepper motor electrical system.
The P1777 OBDII fault code is stored for one of the following reasons:
Steps to troubleshoot the P1777 OBD2 DTC: