Scania fault code 1509
Code 1509 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:
TMS Transmission Management System
The position sensor for the coupling sleeve for S3 and S4, fault in the voltage supply
The supply voltage to the position sensor is too high or too low.
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ELC Electronically controlled air suspension
Solenoid valve for parking brake.
Open circuit or too low current consumption in circuit.
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