2010 Volvo C70 AutomaticFACTORY OEM SERVICE PROCEDURE

Generator Terminals

Fig 1: Identifying Generator Terminals
GLL146018Courtesy of VOLVO CARS CORPORATION

Generator (GEN) terminals, 5 cylinder engine:Β 

  1. Screw terminal #1. B+ to the battery via the starter motor
  2. Upper terminal #1. Not used
  3. Center terminal #2. To the engine control module (ECM)
  4. Lower terminal #3. Not used.

Generator (GEN) terminals, 4 cylinder engine:Β 

  1. Screw terminal #1. B+ to the battery via the starter motor
  2. Upper terminal #1. To the engine control module (ECM)
  3. Center terminal #2. To the engine control module (ECM)
  4. Lower terminal #3. Reference voltage from the battery.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.