Test results

Passenger presence sensor wiring

Connect the ohmmeter to the passenger presence sensor wiring to check whether the resistance value of the seat is higher than 400 ohm

Go to Step 2

Resistance value lower than 400 ohm

Go to Step 5

Passenger presence sensor

Position an average adult (> 48 kg and > 174 cm) correctly on the seat (see Fig. 1) and connect the ohmmeter to the passenger presence sensor wiring to check whether the resistance value is higher than 400 ohm

Go to Step 4

Resistance < 400 ohm

Go to Step 3

Passenger presence sensor

Position a dummy (m= 0.9 kg and diameter= 120 mm) on the seat (see Fig. 2), then connect the ohmmeter to the passenger presence sensor wiring to check the passenger presence sensor resistance value

End of diagnosis

Resistance < 400 ohm

Go to Step 5

Seat resistance wiring and connections

Check that the passenger presence sensor connections are correct and check for the presence of open circuits on the wiring

End of diagnosis

Wiring or connection faults

Restore the correct wiring connection and continuity.

If the problem persists, go to step 5

Passenger presence sensor

Remove the seat upholstery and check that the sensor is positioned correctly.

Take a picture of the component and attach it to the returned part

End of diagnosis

Passenger presence sensor not positioned correctly

Replace the seat foam and the passenger presence sensor