For Shop Owners

P1778 NISSAN - Step Motor Function

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Faulty Step Motor
  • Step Motor harness is open or shorted
  • Step Motor circuit poor electrical connection
What does this mean?

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1778 NISSAN Description

The step motor's 4 aspects of ON/OFF change 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. This diagnosis item detects when electrical system is OK, but mechanical system is NG. This diagnosis item detects when the state of the changing the speed mechanism in unit does not operate normally.
OBDII Code P1778 Nissan - Step Motor Function -

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P1778 NISSAN Comments

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Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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Posted and Edit by 09-18-2016

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