ALARM Volvo FH4

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U005588

CAN Security Subnet is off.

Bus off

Lack of CAN communication causes:

– Alarm can not be armed or disarmed

– sensors which are delivered via CAN can not trigger

  an alarm

–  no feedback to CIOM about current Alarm ECU

  state

–  no feedback to CIOM about last alarm reason

–  no feedback to CIOM about active DTCs in Alarm

  ECU (fault event gateway)

– alarm is not triggered due to lack of CAN

  communication

CAN_H is shorted to GND CAN_L is shorted to UBATT

Diagnostic Service 14. No additional action is needed.

Inspect the harness or connectors.

CAN Communication Security Net

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U300041

Parameters checksum not valid.

General Checksum Failure

Boodloader is informed about this fault and then

  application will be never

started after reset.

AECU configuration parameters corrupted.

Diagnostic Service 14. No additional action is needed.

Replace the component and send it to backoffice

Electronic control unit

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U300044

AECU volatile memory error

Data Memory Failure

SW does not specify any

functional behavior when this DTC is set.

AECU corrupted.

Diagnostic Service 14. No additional action is needed.

Replace the component and send it to backoffice.

Electronic control unit

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U300045

AECU non-volatile memory error

Program Memory Failure

Boodloader is informed about this fault and then

  application will be never

started after reset.

AECU corrupted.

Diagnostic Service 14. No additional action is needed.

Replace the component and send it to backoffice.

Electronic control unit

Node

DTC ISO

FailureEvent

FTB_Name

FunctBehaviorDesc

PossibleRootCause

ProcedureEraseConfirmedDtc

ProposedWorkshopAction

ProprietaryName

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U300046

AECU EEPROM is

corrupted.

Calibration / Parameter Memory Failure

SW does not specify any functional behavior when

this DTC is set.

AECU corrupted.

Diagnostic Service 14. No additional action is needed.

Replace the component and send it to backoffice.

Electronic control unit

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U300049

AECU internal

hardware fault – CPU clock failure

Internal Electronic Failure

SW does not specify any functional behavior when

this DTC is set.

AECU corrupted.

Diagnostic Service 14. No additional action is needed.

Replace the component and send it to backoffice.

Electronic control unit

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U300054

Routine for Ultrasonic/Inclinatio n Sensors calibration

  has to be started. If routine ended successful then DTC will be PASSED, when

  routine failed then DTC will be FAILED. Until routine starts the DTC will be

  NOT TESTED.

Missing Calibration

Any defects regarding Calibration for

  Ultrasonic/Inclination sensors can cause invalid work of

  Ultrasonic/Inclination sensors:

– Ultrasonic/Inclination sensors can be more or less

  sensitive and alarm can be false generated or at all

– Ultrasonic/Inclination sensors can not be activated.

  So no alarm due to: movement detection or inclination

Ultrasonic/Inclination Sensors Calibration Routine not

  completed

– or wrong calibration data

– or lost communication with sensor

– or calibration verification not passed.

Diagnostic Service 14. No additional action is needed.

Perform the calibration of MDD sensors (launch the

  routines R1AIA & R1AIB).

Electronic control unit

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U300094

AECU will be reset

due to watchdog timer expiration

Unexpected Operation

SW does not specify any

functional behavior when this DTC is set.

SW Failure.

Diagnostic Service 14. No additional action is needed.

Replace the component and send it to backoffice.

Electronic control unit

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U300316

AECU power supply

<17V

Circuit Voltage Below Threshold

It can cause:

– power supply for MDD and siren can not be 

  maintained. It can cause that alarm is triggered or MDD and siren can not be

  armed

– power supply for uController is too low and Alarm ECU

  works unstable. False alarm possible.

Battery level is below 17V.

Diagnostic Service 14. No additional action is needed.

Inspect the battery Inspect the harness

Battery Power

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U300317

AECU power supply

> 31V

Circuit Voltage Above Threshold

It can cause:

– alarm ECU hardware can be damged

Alternator/external charger voltage above 31V

Diagnostic Service 14. No additional action is needed.

Inspect the battery Inspect the harness

Battery Power

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B150697

Panic button stays in pushed state longer as defined in

  PanicCabButtonPuls eTimeout parameter.

Component or System Operation Obstructed or Blocked

Presence of defect inhibits the Panic Alarm button.

Panic button hardware failure.

Diagnostic Service 14. No additional action is needed.

Inspect the battery Inspect the harness

Panic button

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B150249

Siren internal fault

Internal Electronic Failure

Siren won’t ring.

Siren corrupted.

Diagnostic Service 14. No additional action is needed.

Replace the siren and send it to backoffice.

Siren Module

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B150268

Siren and AECU not correctly paired.

Event Information

Not possible to leave service mode.

Interruption of the procedure

or

Siren corrupted. Or Siren missing.

Diagnostic Service 14. No additional action is needed.

Check siren connection else

Replace the siren and send it to backoffice.

Siren Module

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B150287

Siren doesn’t communicate with

Alarm ECU.

Missing Message

Siren won’t ring.

Connector between the truck wiring harness and the

Siren detached.

Diagnostic Service 14. No additional action is needed.

Inspect the siren, the connector and the harness.

Siren Module

Node

DTC ISO

FailureEvent

FTB_Name

FunctBehaviorDesc

PossibleRootCause

ProcedureEraseConfirmedDtc

ProposedWorkshopAction

ProprietaryName

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B150349

Ultrasonic/Inclinatio n Sensors internal fault

Internal Electronic Failure

Data from Ultrasonic/Inclination Sensors are invalid

  and might not detect movement in cab, or generate false alarm.

1.  internal eeprom in ultrasonic or inclination

  sensor

2.      bad result of ultrasonic

  selftest (selftest is run just before ultrasonic is being armed)

3.      bad result of inclination sensor

  (selftest is run just before inclination is being armed)

Two possible causes for defect 2 & 3:

–        missing microphone or

  sounder connected to ultrasonic

–        bad position of

  inclination sensor. Sensor shall lie horizontally, not tilted, not aside

Diagnostic Service 14. No additional action is needed.

First check MDD position

Then check microphone & sounder

If no issue found, replace the MDD and send it to

  backoffice.

Motion Detection Module

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B150387

Ultrasonic/Inclinatio n Sensors don’t communicated with

  Alarm ECU.

Missing Message

Ultrasonic/Inclination Sensors can’t trigger alarm:

  movement detection or inclination detection won’t

work.

Connector between wiring harness of the truck and the

  Ultrasonic/Inclination Sensors detached.

Diagnostic Service 14. No additional action is needed.

Inspect the MDD, the connector and the harness.

Motion Detection Module

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U114111

Communication network between AECU,

Ultrasonic/Inclinatio n Sensors, Siren have been

  shorted to ground.

Circuit Short To Ground

If the Alarm System is in Service Mode, the Siren

  doesn’t ring.

Else, the siren is triggered and rings as if the system

  was hacked

Ultrasonic/Inclination Sensors don’t trigger the Alarm

  system.

Wiring harness faulty

Diagnostic Service 14. No additional action is needed.

– Inspect the Siren, the MDD

– Inspect the harness and connectors.

Alarm Private Net

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U114112

Communication network between AECU,

Ultrasonic/Inclinatio n Sensors, Siren have been

  shorted to Ubatt.

Circuit Short To Battery

If the Alarm System is in Service Mode, the Siren

  doesn’t ring.

Else, the siren is triggered and rings as if the system

  was hacked

Ultrasonic/Inclination Sensors don’t trigger the Alarm

  system.

Wiring harness faulty

Diagnostic Service 14. No additional action is needed.

– Inspect the Siren, the MDD

– Inspect the harness and connectors.

Alarm Private Net

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U114186

Communication network between AECU,

Ultrasonic/Inclinatio n Sensors, Siren not

valid.

Signal Invalid

Data from Ultrasonic/Inclination Sensors, or siren are

  invalid and it might cause:

– generate false alarm

1. Wiring harness faulty

2. EMC problem

Diagnostic Service 14. No additional action is needed.

– inspect the MDD and the siren

– replace the component and send it to backoffice

Alarm Private Net

Node

DTC ISO

FailureEvent

FTB_Name

FunctBehaviorDesc

PossibleRootCause

ProcedureEraseConfirmedDtc

ProposedWorkshopAction

ProprietaryName

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B150411

AECU 12V Power supply output to Ultrasonic/Inclinatio n

  Sensors and Siren has been shorted to ground.

Circuit Short To Ground

When defect is present then 12V (Power supply for Siren

  and Ultrasonic/Inclination Sensors) is switched off.

After that, every 1sec there is an attempt to switch on

  12V. Those attempts are performed as long as short is present.

Presence of short 12V at arming siren or

  Ultrasonic/Inclination Sensors causes that siren and Ultrasonic/Inclination

  can not be armed.

When presence of short 12V takes place when siren is

  already armed than alarm is triggered. Siren starts sounding using backup

  battery. In that case siren backup battery must be already charged.

Wiring harness faulty

Diagnostic Service 14. No additional action is needed.

– inspect the MDD and the siren

– inspect the harness

Alarm Private Net Modules Supply Circuit

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B150417

AECU 12V Power supply output to Ultrasonic/Inclinatio n

  Sensors and Siren

>12V

Circuit Voltage Above Threshold

When defect is present then 12V (Power supply for Siren

  and Ultrasonic/Inclination Sensors) is switched off.

After that, every 1sec there is an attempt to switch on

  12V. Those attempts are performed as long as short is present.

Presence of short 12V at arming siren or

  Ultrasonic/Inclination Sensors causes that siren and Ultrasonic/Inclination

  Sensors can not be armed.

When presence of short 12V takes place when siren is

  already armed than alarm is triggered. Siren starts sounding using backup

  battery. In that case siren backup battery must be already charged.

Wiring harness faulty

Diagnostic Service 14. No additional action is needed.

– inspect the MDD and the siren

– inspect the harness

Alarm Private Net Modules Supply Circuit

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B150511

AECU output to LED has been shorted to ground.

Circuit Short To Ground

LED is permanently OFF and it doesn’t reflect current

  Alarm ECU state (e.g. UNSET- no blink LED, SET- blink LED 1Hz etc).

Wiring harness faulty

Diagnostic Service 14. No additional action is needed.

– inspect the LED

– inspect the harness

LED Power Supply Circuit

Node

DTC ISO

FailureEvent

FTB_Name

FunctBehaviorDesc

PossibleRootCause

ProcedureEraseConfirmedDtc

ProposedWorkshopAction

ProprietaryName

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U1FFF68

Factory mode active.

Event Information

Not possible to leave service mode. Alarm is not armed.

P1C54 set to true.

Diagnostic Service 14. No additional action is needed.

Exit Factory Mode

Factory Mode Active

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