Checking Foldable Head Restraints

Checking foldable head restraints

Checking the relay
Check the function of relay 2/75: Activate and deactivate the relay a number of times. The relay is functioning if there is a clicking sound when the relay is activated and deactivated.
Replace with a new relay if the relay does not function.

Other information:
- To access the integrated relay / fusebox in the cargo compartment, see Relay/fuse box cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.









Was a fault detected?

Yes - Fault Found

No - Checking components and wiring

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Checking components and wiring
Check that fuses 11D/7 and 11E/6 are intact.
Check the cable between fuse 11D/7 terminal #2 and relay 2/75 terminal #5. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between relay 2/75 terminal #3 and the left and right head restraint solenoid connector terminal #1. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between connector terminal #4 for each of the head restraints and the ground terminal for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.
Check the resistance of each head restraint solenoid. Too high resistance indicates an open-circuit in the solenoid. Too low resistance indicates a short-circuit in the solenoid. Replace the head restraint in the event of a fault in the solenoid.

Hint: The resistance in a correct head restraint solenoid is 2.0 - 2.5 ohms. The resistance should be measured between connector terminals #1 and #4 on each of the head restraint solenoids.

Other information:
- To access the integrated relay / fusebox in the cargo compartment, see Relay/fuse box cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
- To replace the head restraint, see Outer head restraint Outer Head Restraint.
- To connect the breakout box to the rear electronic module, see Connecting the breakout box Connecting the Breakout Box.













Has the fault been found?

Yes - Fault Found

No - No Fault Found

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