AutoCodes
 
OBDII Code List
 
C0307 BUICK

C0307 BUICK - Motor A/B Circuit Range/Performance

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
Comments  |  Add Comment

Possible causes

  • Faulty Transfer Case Motor
  • Transfer Case Motor harness is open or shorted
  • Transfer Case Motor circuit poor electrical connection

Possible symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

C0307 Buick Description

The transfer case motor is a bi-directional, permanent magnet, D.C. motor. When energized, (through Motor Control A or Motor Control B, the ground is provided by the opposing Motor Control circuit and then grounded through the transfer case shift control module ground circuit), the motor, through a series of gears, rotates a shaft which moves the mode and range forks to shift the transfer case between 4H, AUTO 4WD, 2H, N, and 4L ranges. While the transfer case motor is energized the transfer case shift control module also energizes the solenoid for the transfer case lock. The motor lock is disabled (locking action released) and free turning of the transfer case motor and sector shaft is then allowed.

This DTC detects a short to ground in Motor Control A or Motor Control B CKT.

OBDII Code C0307 Buick - Motor A/B Circuit Range/Performance - AutoCodes.com

Need more help?

Get the C0307 Buick code diagnosed by a professional: Find a repair shop in your area

Related Information

C0307 BUICK Comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the C0307 Buick code? Have you replaced any parts?
Any information is appreciated. Thanks
Top ⇧