Checking The Transmission Output Speed Sensor Signal

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS CORPORATION

Ignition off
Take care of the control module's and the speed sensor's connector with regards to contact resistance and oxidation according to:CHECKING WIRING AND TERMINALS. PERMANENT FAULT
Raise the car so that the drive wheels are clear of the ground
Start the engine. Allow the engine to idle
Shift the gear selector to position D so that the drive wheels begin to rotate
Read off the transmission speed.
Depress the accelerator pedal (AP) and check that the speed is updated.

NOTE:
Ensure that the wheels are not rotating when the gear selector is moved.

NOTE:
Diagnostic trouble codes (DTCs) may be stored in the ABS system when the rear wheels are stationary and the front wheels rotate. Erase any diagnostic trouble codes (DTCs) stored in the ABS system after fault-tracing.

Other information:
- To access the control module connector, see CONNECTING THE BREAKOUT BOX
- To access the transmission output speed sensor connector, see OUTPUT SPEED SENSOR TRANSMISSION, REPLACING .
Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
Courtesy of VOLVO CARS CORPORATION

Was the speed updated?