SCM ( Steering control Module ), THAT MODULE CONTROLS THE WIPER OPERATION, WHEN YOU SAY ,SOMETIMES DISCONNECTING BATTERY FIX IT
THAT TELLS ME THIS MODULE RESETING , INSPECT THE CONNECTTORE OF IT , YOU HAVE SEVRAL CONNECTORS ON IT , INSPECT THEM ALL FOR ANY DAMAGE ,BACKED OUT PINS, MELTING ETC.. IF ALL GOOD , THEN REPACE IT
OPERATION The multi-function switch uses resistor multiplexing to control the many functions and features it provides using a minimal number of hard wired circuits. The switch receives clean grounds from the Steering Control Module (SCM) internal to the switch housing, then provides resistor multiplexed return outputs to the SCM to indicate the selected switch positions. The SCM then sends electronic switch status messages over a Local Interface Network (LIN) data
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