B1740 - Driver Seat Front Down Switch Circuit Short To Battery

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Seat Adjuster Switch
  • Seat Adjuster Switch harness is open or shorted
  • Seat Adjuster Switch circuit poor electrical connection
  • Faulty Memory Seat Module (MSM)

Possible symptoms

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

B1740 Description

When the power seat switches are pressed, they send a 12-volt signal through the switch signal circuits to the Memory Seat Module (MSM). The MSM then commands the driver seat motors to move in response to the switch signals. If a seat switch circuit is active in one direction and the switch for the opposite direction is pressed, this Diagnostic Trouble Code (DTC) will set. Multiple DTCs will set if one of the switch signal circuits is shorted to voltage.
OBDII Code B1740 - Driver Seat Front Down Switch Circuit Short To Battery - AutoCodes.com

B1740 Information for specific makes

  • B1740 BUICK Driver Seat Front Down Switch Circuit Short To Battery
  • B1740 CADILLAC Driver Seat Front Down Switch Circuit Short To Battery
  • B1740 CHEVROLET Driver Seat Front Down Switch Circuit Short To Battery
  • B1740 GMC Driver Seat Front Down Switch Circuit Short To Battery

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B1740 Comments

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