Checking line pressure solenoid STH

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector(s) Reinstallation

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Disconnect the automatic transmission and control module connectors
• Remedy contact resistance and oxidation in the control module and automatic transmission connectors. See Contact resistance and oxidation
• Reinstall the components, reconnect the connectors etc.
• Raise the car so that the front wheels are off the ground
• Start the car
• Move the gear selector to position D
• Read off the current through the solenoid circuit
• Depress the 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 and oxidation.

  Other information: 

  • To disconnect the control module, see Transmission control module (TCM), replacing
  • For information about signals, see Signal specification .
  Fig 3: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS OF NORTH AMERICA.

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

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Checking solenoid STH