2004 Volvo V70 Base, 2.4 61, StandardFACTORY OEM SERVICE PROCEDURE

Yaw rate sensor (Only DSTC)

Fig 1: Yaw Rate Sensor
GLL104555Courtesy of VOLVO CARS OF NORTH AMERICA.

The two yaw rate sensors are in the passenger compartment. One is positioned in the center console under the storage compartment and the other under the right-hand front seat. The gyro element sensors provide information about the yaw rate speed of the vehicle (lateral speed) and are used to calculate the stability functions in the ABS control module. The information is transmitted via analog signals (0-5 V), where approximately 2.5 V is the normal value when traveling straight ahead. An in-built filter filters the signal so that no interference from high frequencies occur and so that vibrations in the car body do not affect the different calculations in the control module.

The two sensors are installed in opposite directions. The only reason for two sensors is for safety. They measure the same angle and provide a combined average.

The sensors are piezoelectric. There are diagnostics for the sensors.

Factory Service Tools

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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.

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