Variant 1
Applies to: ALM1 (ALM)
What does Scania ALM fault code 582 mean?
The micro switch is short-circuited to the voltage supply.
What causes Scania DTC 582?
- Fault in the harness-to-component connector or cable harness to the micro switch. - Fault in the micro switch. - Fault in ALM control unit E7.
How does the system react?
If the alarm system is activated when the fault code is generated the siren will sound.
What are the symptoms?
The micro switch is out of order.
How to fix Scania ALM fault code 582?
- Disconnect the micro switch.
- Note whether a new fault code for an open circuit has been generated.
- If this is the case, the fault is probably in the micro switch.
- Measure the pins in the nearest harness-to-component connector going to control unit pin B13.
- Disconnect the harness-to-component connector on the control unit.
- Measure for short circuits throughout the cable harness.
- If there are a number of harness-to-component connectors between the micro switch and the control unit, then also measure these to locate the fault.
- If the fault is not in the cable harness or the micro switch, it is probably an internal fault in the control unit.
Variant 2
Applies to: ALM1
Detection
Extra sensor 1 is short-circuited to supply voltage.
Possible cause
- Fault in the harness-to-component connector or cable harness to the micro switch. - Fault in the micro switch. - Fault in ALM control unit E7.
System reaction
The sensor does not work. If the alarm system is activated when the fault code is generated, the siren will sound.
How to fix
- Disconnect the micro switch.
- Note whether a new fault code for an open circuit has been generated.
- If this is the case, the fault is probably in the micro switch.
- Measure the pins in the nearest harness-to-component connector going to control unit pin B13.
- Disconnect the harness-to-component connector on the control unit.
- Measure for short circuits throughout the cable harness.
- If there are a number of harness-to-component connectors between the micro switch and the control unit, then also measure these to locate the fault.
- If the fault is not in the cable harness or the micro switch, it is probably an internal fault in the control unit.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.