Checking the wires and components
Check that the fuses 11D/7 and 11E/6 are intact.
Check the wire between fuse 11D/7 2 and relay 2/75 5 for an open circuit as described in Open-circuit, permanent faults and short circuit to ground as described in Short-circuit to ground, permanent faults .
Check the wire between relay 2/75 3 and left and right head restraint solenoid connector 1 for an open circuit as described in Open-circuit, permanent faults and short circuit to ground as described in Short-circuit to ground, permanent faults .
Check the wire between the respective head restraint solenoid connector 4 and the ground point for an open circuit as described in Open-circuit, permanent faults .
Do the necessary corrective action.
Check the respective head restraint solenoid resistance. Too high a resistance value means an open circuit in the solenoid and too low a resistance value indicates a short circuit in the solenoid. If there is a solenoid fault, replace the head restraint.
HINT: A fault-free head restraint solenoid has a resistance of 2.0 - 2.5 ohm. The resistance is most appropriately measured between the respective head restraint solenoid connector 1 and 4.
Additional information:
- To access relay/fuse box in the boot, see Integrated relay/fusebox cargo compartment/Rear electronic module (REM), replacing .
- For replacement of head restraint, see Outer head restraint .
- For connection of test box, rear electronic module (REM), see Connecting the breakout box .