SEARCH

Volvo Trucks logo

VOLVO FMI Fault Codes DTC


See also VOLVO Truck Fault Codes DTC

ABS Volvo Truck Fault Codes DTC

 

ACM Volvo Truck Fault Codes DTC

 

APM Volvo Truck Fault Codes DTC

 

EBS Volvo Truck Fault Codes DTC

 

EMS Volvo Truck Fault Codes DTC

 

TECU Volvo Truck Fault Codes DTC

 

VMCU Volvo Truck Fault Codes DTC


VOLVO Trucks FMI Error Codes DTC & Troubleshooting

Fmi 0

Conditions for registering a trouble code:

Signal level above 4.7 V.

Possible reason:

Faulty wear sensor.

Defective modulator.

Damaged wires or contacts.

Control unit response:

Disabled brake lining warning function.

Obvious external signs:

The yellow warning light is on.

Pictogram of a minor brake system malfunction.

Alert: EBS system fault indicator.

Relevant check:

Check for open or shorted wires and contacts between the modulator and the wear sensor.

Perform MID 136 SID 70/71/72/73/74/75 Sensor, pad wear, inspection.

In the worst case, replace the modulator.

 

Fmi 1

Conditions for registering a trouble code:

The signal level is below 0.48 V.

Possible reason:

Faulty wear sensor.

Defective modulator.

Damaged wires or contacts.

Control unit response:

Disabled brake lining warning function.

Obvious external signs:

The yellow warning light is on.

Pictogram of a minor brake system malfunction.

Alert: EBS system fault indicator.

Relevant check:

Check for open or shorted wires and contacts between the modulator and the wear sensor.

Perform MID 136 SID 70/71/72/73/74/75 Sensor, pad wear, inspection.

In the worst case, replace the modulator.

Fmi 3

Conditions for registering a trouble code:

Short circuit of the power circuit of the wear sensor to a circuit with a voltage above 6 V.

Possible reason:

Defective modulator.

Damaged wires or contacts (short circuit to a circuit with a higher voltage).

Control unit response:

Disabled brake lining warning function.

Obvious external signs:

The yellow warning light is on.

Pictogram of a minor brake system malfunction.

Alert: EBS system fault indicator.

Relevant check:

Check for a short between the modulator power supply circuit (CSG 2) and the wear sensor power supply circuit (LWS A / B 3, LWS A / B 5, LWS C / D 3, LWS C / D 5).

In the worst case, replace the modulator.

 

Fmi 10

Conditions for registering a trouble code:

Signals on the right and left side differ by more than 20%.

Possible reason:

The brake caliper is mechanically damaged / defective.

The wear on the brake pads is too great.

Control unit response:

EBS functionality downgraded.

Obvious external signs:

The yellow warning light is on.

Pictogram of a minor brake system malfunction.

Alert: EBS system fault indicator.

Relevant check:

Check brake caliper and brake pads.

 


Fmi 12

Conditions for registering a trouble code:

Short circuit of the power circuit of the wear sensor to a circuit with a voltage below 4.5 V.

Short to ground in the power circuit of the wear sensor.

Possible reason:

Defective modulator.

Damaged wires or contacts.

Control unit response:

Disabled brake lining warning function.

Obvious external signs:

The yellow warning light is on.

Pictogram of a minor brake system malfunction.

Alert: EBS system fault indicator.

Relevant check:

Check the wires and contacts between the modulator and the wear sensor.

Perform MID 136 SID 70/71/72/73/74/75 Sensor, pad wear, inspection.

In the worst case, replace the modulator.