Checking lock-up solenoid SL

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Engine running
• Move the gear selector to position D
• Activate the solenoid for gear 2 and then the lock-up function
• Check the pressure change on the oil pressure gauge. A considerable change in pressure should be observed
• Deactivate the lock-up function. Check the pressure change.

  Repeat the activation and deactivation of the lock-up function a few times to ensure accurate results.

  HINT: Unchanged pressure means that the control system is defective. 

  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Did the pressure change? 

• YES 

  Refer to Checking the lock-up function 

• NO 

  Refer to Replacing transmission control system