Er det brudd i elementet Skal lyset i bryteren blinke i 12 sekunder. Er spenningen under 11,7 volt eller defekte sikringer slukner lampa raskt.
Det er innebygget diagnose i bryterene som viser Hva som er feil;
Note
Current supply to the heat conductor of the seat heating electronics is interrupted if the vehicle battery voltage drops below 11.8 volts. The function LED installed in the switch however remains on. Current supply to the heat conductor is resumed when the battery voltage again reaches 11.8 volts.
Fault monitoring
The seat heating electronics monitors the temperature sensor and the heating elements for faults.
If a break or short occurs at the temperature sensor, the seat heating is switched off in order to prevent overheating.
Fault indicator
If a fault is recognized, the function LED installed in the switch flashes for 12 seconds when the fault occurs, or, if the fault is already present, when the seat heating is switched on.
Flash code
A flash code shows what faults the electronic circuitry has currently detected.
Flash code output is started by following procedure:
•Switch off ignition
•Press and hold the button for seat heating
•Switch on ignition (terminal 15) with button depressed
•Release the button and press it again briefly
The following faults can be indicated:
Flashing
Defect
Once
Switch faulty (potentiometer or electronics) or switch overheating due to a short-circuit
Twice
Temperature sensor has break or short
3 times
All 4 heating elements broken or have a short (probably break or short in wiring harness)