Truck Repair

How to Solve Scania Truck Alarm System ALM259 Short Circuit

Here is the instruction show you guide on how to solve Scania truck alarm system ALM259 Secondary wake-up signal,short circuit.

Related Contents:

2024.07 Scania SDP3 V2.61.2 V2.40 Diagnostic Software Free Download

Scania VCI3 Diagnostic Adapter Full Chips

2024 2018 Scania Multi EPC Parts Catalogue Free Download

 

 

Secondary wake-up signal, short circuit

Error identification

The secondary wake-up signal is short-circuited to ground.

 

Cause

Faulty cable harness for the secondary wake-up signal.

Faulty ALM control unit E7.

Notes

Symptom

The control unit cannot wake up or be woken up by units connected in the CAN network.

 

Action

Disconnect the harness-to-component connector to ALM control unit pin A3.

Measure for short circuits throughout the cable harness.

If there are several harness-to-component connectors between the wake-up signal and the control unit, disconnect them and measure to locate the fault.

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

 

For more information about Scania truck,please refer to:Scania Trouble Repair.

auto

Recent Posts

2025 Wabco TEBS-E 7.20 6.50 6.02 Diagnostic Software EBS ABS Free Download

Wabco software is designed to facilitate the configuration of the Trailer EBS – ABS Braking…

3 days ago

HINO J05E Engine Water Pump Removing Guide

This instruction show you guide on how to remove and install water pump for HINO…

4 days ago

How to Use JPRO 2025 V3 Diagnostic Software to Perform CTIS Pressure Test

JPRO 2025V3 CTIS Pressure test allow you to measure the pressure of a selected axle group…

7 days ago

How to Solve PCC2300 PowerCommand HMI Screen Does Not Wake Up

This instruction show you guide on how to solve PCC2300 Powercommand HMI screen does not…

1 week ago

How to Solve AGCO Machine SPN100 FMI 01 Oil Pressure Low Alarm

This instruction show you guide on how to solve AGCO machine SPN100 FMI 10 oil…

2 weeks ago

Valtra BH Series 140-210 Internal Inertial Sensor Temperature Error

Here is the instruction show you guide on how to solve Valtra BH Series 140-210…

2 weeks ago