Tag: Scania Truck Repair

Here is the instructino show you guide on how to solve Scania Truck supply press control unit internal fault in the control unit.

 

Preparations:

Scania SDP3 2.65.2 Truck Diagnostic Software

Scania Multi EPC 2025.01

Scania VCI3 High quality

 

 

Error identification

Regulation of internal supply voltage to the solenoid valves does not work as intended. This has caused supply voltage to be higher than permitted.

 

Cause

Internal fault in the control unit.

 

Notes

A yellow warning indication is displayed.

 

Action

Clear the fault code.

Turn off the power with the starter key.

Wait for 60 seconds.

Switch on the voltage with the starter key.

If the fault code it still active, renew the control unit.

Here is the guide on how to solve Scania truck ALM alarm system trouble codes ALM 310 311 siren short circuit error.

 

Preparations:

Scania SDP3 2.61.2 Truck Diagnostic Software

Scania Multi EPC 2024.03

Scania VCI3 High quality

 

 

Siren, short circuit

Error identification

Siren N9 is short-circuited to ground/the voltage supply..

 

Cause

Fault in harness-to-component connectors or cable harness for siren N9.

Fault in siren N9.

Faulty ALM control unit E7.

 

Symptom

The siren does not work correctly.

 

Action

Disconnect siren N9.

Measure against ground and voltage on the pins in the nearest harness-to-component connector leading to control unit pin A11.

 

Disconnect the harness-to-component connector on the control unit.

Measure for short circuits throughout the cable harness.

If there are several harness-to-component connectors between the component and the control unit, also measure these to locate the fault.

 

If the fault is not in the cable harness or the component, it is probably an internal fault in the control unit.

Here is the instruction show you guide on how to solve Scania truck Alarm system Wake-up signal short-circuit to ground.

 

Preparations:

Scania SDP3 2.60.1 Truck Diagnostic Software

Scania Multi EPC 2024.03

Scania VCI3 High quality

 

Wake-up signal for Scania Communicator, short circuit

Error identification

Wake-up signal for Scania Communicator is short-circuited to ground.

 

Cause

Fault in harness-to-component connectors or cable harness for the wake-up signal for Scania Communicator.

Internal fault in ALM control unit E7.

Notes

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Symptom

The alarm system cannot initiate Scania Communicator.

 

Action

Disconnect the harness-to-component connector to ALM control unit pin A5.

Measure for short circuits throughout the cable harness.

If there are a number of harness-to-component connectors between the wake-up signal and the ALM control unit, disconnect them and measure in order to isolate the fault.

If the fault is not in the cable harness it is probably an internal fault in ALM control unit E7.