Linde 350 Series Service Training page 101

Service Training
39 Seat switch breaker and maker have the same signal
The seat switch is activated --> window 72 and both output signals of the seat switch show the
same value 00 or 11. --> window 4
Possible causes: seat switch is switched active but not connected; seat switch defective; open
connection (seat switch - LHC module); cable loom
Truck responses: W – B – L
41 vs is under 8 Volt although vr is over 11 Volt
Supply voltage vs for the traction potentiometer is under 8 Volt, although supply voltage vr for the
LHC module is over 11 Volt. --> window 6
Possible cause: voltage regulator in LHC module
Truck responses: W – B – L
43 Controller without power
The LHC module is without supply voltage vr . --> window 6
Possible causes: fuse 1F18 defective; cable loom at LHC module not connected to positive and
negative terminals.
Truck responses: W – B – L
44 Safety relay in the controller can no longer be switched off
Safety relay K1 in the LHC module (switched off briefly when the ignition key is turned) is sticking.
Possible cause: K1 relay in the LHC module is oxidized, sticking
Truck responses: W – B – L
45 Release valve can no longer be activated
Release valve 1Y4 can not be activated. --> window 5
Possible causes: open connection in cable loom to the release valve, release valve solenoid
defective
Truck responses: W – B
46 Release valve can no longer be deactivated
Release valve 1Y4 was activated, but can no longer be deactivated.
--> window 5
Possible causes: LHC module defective; cable loom for release valve is permanently "+"
Truck responses: W – B
47 Current of release valve is too low
Release valve 1Y4 can not be activated --> window 5
Possible causes: inherent resistance of solenoid of valve 1Y4 is too large or solenoid not
connected; cable loom
Truck responses: W – B
51 Current of solenoid for IC engine is too high
The vehicle detects too high a current value for solenoid iY1 to speed controller, over 1.8 A --
> window 6
Possible causes: short in solenoid iY1 or in cable loom to solenoid iY1
Truck responses: W – E – L – F – S
Section
02.01
Page
2
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