Checking line pressure solenoid STH

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connectors

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Remedy control module and automatic transmission connector for contact resistance and oxidation according to Contact resistance and oxidation .
• Reinstall components, reconnect connectors etc.
• Raise the car so that the drive wheels are unimpeded.
• Start car.
• Read off current in solenoid circuit.
• Apply the brakes and shift the gear selector to position D.
• Depress accelerator pedal (AP) slowly.

  The current should decrease as the accelerator pedal (AP) is depressed.

  If the current reduces as the accelerator pedal (AP) is depressed, the cause of the fault was contact resistance or oxidation.

  Other information: 

  • To disconnect control module, see Replacing the gearbox control module (TCM) .
  • To disconnect transmission connector, see Inspecting/cable harness to solenoids .
  Fig 3: Identifying VCT2000

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Does current reduce when the accelerator pedal (AP) is depressed? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Checking wiring and components