BT SWE120L - 7.6.1 The truck cannot be driven.

7 – 24 Repair manual SWE100, 120, 120L, 120S, 140, 140L, 200D © BT
Troubleshooting
Troubleshooting chart
T code Valid from serial no. Date Order no.
841×842×843 6061850- 2012-08-30 258946-120
7.6.1 The truck cannot be driven.
Symptom Influencing elements Possible cause
Mechanical brake cannot
be applied.
Sensor [B60] • Sensor in wrong position and
disrupted by metal
• Faulty sensor.
Tiller arm handle always "On" in
Travel mode
Damaged wiring harness or
incorrect plus/minus current
feed
Transistor regulator, input
[T1:95].
Broken transistor regulator
Mechanical brake cannot
be released.
Brake If the gap is greater than 0.6
mm, the brakes may be difficult
to apply.
Sensor [B60] • Sensor in wrong position or
cannot be influenced normally
• Defective sensor
• Break in sensor wiring.
Transistor regulator, input
[T1:95].
Transistor regulator, output
[T1:90].
Broken transistor regulator
Corrosion Brake has seized due to
corrosion
Truck cannot travel after
start-up although steering
handle was in raised
position.
Sensor [B60] • Sensor in wrong position and
disrupted by metal
• Defective sensor
Tiller arm handle always "On" in
Travel mode
Damaged wiring harness or
incorrect plus/minus current
feed
Transistor regulator, input
[T1:95].
Broken transistor regulator.
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