Renault Truck VECU Fault Codes

By | 15/11/2018

Renault Truck Control Unit VECU Fault Codes

See also:

Renaul VECU Fault Codes

Renault Magnum

Type of Defect (FMI)

00: Data valid, but above normal operating range.

01: Data valid, but under normal operating range

02: Data is uneven, intermittent or incorrect.

03: Voltage above nominal or short circuit to +

04: Voltage below nominal or short circuit to –

05: Current below rated or short circuit

06: Current above nominal or circuit closed to ground

07: Mechanical system response is incorrect.

08: Abnormal frequency, pulse width or period

09: Abnormal cooling rate

10: Abnormal variation rate

11: Non-identifiable failure type

12: Malfunction of computing peripheral device or component

13: Calibration adjustment outside

14: Special instructions

15: Data is valid, but above the normal operating range (very low degree of importance)

16: Data valid, but above normal operating range (low degree of importance)

17: Data valid, but under normal operating range (very low degree of importance)

18: Data is valid, but under the normal operating range (low degree of importance)

19: Error data from the network

31: Reserved

Fault codes of truck control units, VECU

Code Malfunction Repair method
SPN 91 FMI 3 Accelerator pedal, power, short to positive. Check the integrity and insulation of cable connections (SL2 / 3, SL2 / 4), check the supply voltage (4.5 – 5.25V).
 SPN 91 FMI 3  Accelerator pedal, signal, short to positive. Check the integrity and insulation of cable connections with respect to +24 V. (SL2 / 4), operate the pedal and check the signal of the potentiometer (0.25 – 4.6 V).
 SPN 91 FMI 3, 4 Accelerator pedal, power, short to ground. Check the integrity and insulation of cable connections (SL2 / 3, SL3 / 4), check the supply voltage (4.5 – 5.25V).
SPN 91 FMI 3, 4 Accelerator pedal, signal, open circuit. Check the integrity and insulation of the cable connections (SL2 / 3, SL2 / 5), operate the pedal and check the signal of the potentiometer (0.25 – 4.6 V).
 

SPN 702 FMI 3

The output lock double H-shaped gearshift circuit, short to positive. Check the integrity and insulation of cable connections with respect to +24 V. (SL2 / 9).
SPN 702 FMI 4 The output of the lock is a double H-shaped gearshift circuit, an open circuit or short to ground. Check the integrity and insulation of cable

compounds in relation to the mass. (SL2 / 9).

SPN 703 FMI 3 Drive brake lights, open circuit or short to ground. Check the integrity and insulation of cable connections with respect to +24 V. (SL2 / 10).
SPN 703 FMI 4 Drive brake lights, short to ground. Check the integrity and insulation of cable connections with respect to weight. (SL2 / 10).
 

SPN 704 FMI 3

Stop signals on M, Austeras on H and P, switching off air conditioning on K, short to positive. Check the integrity and insulation of cable connections with respect to +24 V. (SL2 / 13).
SPN 704 FMI 4 Stop signals on M, Austeras on H and P, switching off air conditioning on K, open circuit or short to ground. Check the integrity and insulation of cable connections with respect to weight. (SL2 / 13).
 

SPN 705 FMI 4

Contact servo steering, open circuit. Check the integrity of the connection (SL1 / 4).
SPN 729 FMI 11 Air preheating, protection of the VECU unit is not operational. Check the integrity and insulation of cable connections (SL2 / 9), check relays R15 and R16.
 

SPN 730 FMI 11

Preheating is running continuously. There is a risk of fire. Check the integrity and insulation of cable connections (SL2 / 9), check relays R15 and R16.
SPN 801 FMI 11 Relay R18, contact or relay fault, open circuit on the contact or on the relay. Verify the correct operation of the relay.
SPN 924 FMI 3 M, N, K, weak speed output. R, exit Austeras. Short to positive Check the integrity and insulation of cable connections with respect to +24 V. (SL2 / 8).
SPN 924 FMI 4 M, N, K, weak speed output. R, exit Austeras. Open circuit or short to ground.  

Check the integrity and insulation of cable connections in relation to the mass (SL2 / 8).

 

SPN 1194 FMI 13

Invalid parameterization. The VECU processor detects the presence of an anti-theft system when this function is not validated. Restore the “anti-theft” function using a PC or remove the “anti-theft” transfer unit.
SPN 1195 FMI 8 Anti-theft unit, lack of communication. Check the integrity and insulation of cable connections (SL1 / 16, SL1 / 17).
SPN 1195 FMI 12 Fault coding electronic lock. Check that the key is recognized by the anti-theft system (the control indicator “anti-theft” lights up for 3 seconds when the contact is turned on and then goes out if the key is recognized). Check cable connections (SL1 / 16, SL1 / 17).
SPN 1195 FMI 12 The problem in the software recognition of electronic lock. Perform a full cycle of software recognition of electronic keys.
 

SPN 1384 FMI 8

Sent messages are not acknowledged. Ensure the correct functioning of the systems connected to the CAN data bus. Check CAN bus communications with all systems and check cable connections (SL3 / 3, SL3 / 4, SL3 / 6, SL3 / 7).
SPN 1384 FMI 8 Open or short CAN line. Check CAN bus communications with all systems and check cable connections (SL3 / 3, SL3 / 4, SL3 / 6, SL3 / 7). The resistance between the two wires must be 60 ohms.
SPN 1384 FMI 9 The engine block does not respond to the CAN bus. Check the diagnostic control of this system, check the CAN bus connections (SL3 / 3, SL3 / 4). The resistance between the two wires must be 60 ohms.
SPN 1624 FMI 18 The speed sensor sends information believed to be incoherent by the VECU processor. Check speed sensor connections.
SPN 1858 FMI 3 Clock relay wiper, short to positive. Check the integrity and insulation of cable connections with respect to +24 V. (SL2 / 11).
 

SPN 1858 FMI 4

Clock relay wiper, open circuit circuit or circuit to mass of Check the integrity and insulation of cable compounds by weight (SL2 / 11)
SPN 6000 FMI 14 Requires programmed maintenance. Perform maintenance. With INFOMAX, implement an update of operational control over maintenance operations. Activated exclusively on batch 2.
 

SPN 170 FMI 3

Outside temperature sensor, open circuit or short to positive. Check the integrity and insulation of cable connections with respect to +24 V. (SL1 / 1, SL1 / 2).
SPN 170 FMI 4 Outside temperature sensor, short to ground. Check the integrity and insulation of cable connections (SL1 / 1, SL1 / 2).
SPN 530 FMI 5 Contact of the fuel filter, open circuit. Check the contact and integrity of cable connections.
 

SPN 551 FMI 11

Contamination of the fuel filter (check the contact and the integrity of the cable connections). Replace fuel filters.
 

 

SPN 558 FMI 7

The contact “accelerator pedal is raised” is blocked in the “closed” or “open” position. Check the integrity of the connection on pins 3 and 4 of the pedal unit, when the pedal is raised, operate the pedal and check the switching state, check the cable connections (SL2 / 1) when switching the state.
 

SPN 597 FMI 11,17

Brake pedal contact, contact misalignment. Actuate the pedal and check the switching status on the contacts; when switching the status, check the cable connections (SL4 / 11).
SPN 598 FMI 7 Contact clutch, contact stuck in a “closed” position. Check contact, check cable connections (SL4 / 9).
 

SPN 601 FMI 4

The malfunction on the handle “cruise control”, R / + and S / – simultaneously. Check the cruise control knob of the cruise control and cable connections (SL4 / 7, SL4 / 8).
 

SPN 604 FMI 7

The contact position of the neutral point is stuck in the “open” position. Check contact and cable connections (SL4 / 5).
 

SPN 604 FMI 7

The contact position of the neutral point is stuck in the “closed” position. Check contact and cable connections (SL4 / 5).
 

 

SPN 604 FMI 18

The speed sensor sends information, which is perceived by the VECU processor, as the lack of communication with the speed sensor. Check speed sensor connections.
 

SPN 608 FMI 8

CAN data bus, short to positive. Loss of communication with the indicator or anti-theft device. Check cable connections (SL1 / 16, SL1 / 17).
 

SPN 608 FMI 8

CAN data bus, malfunction. Check cable connections (SL1 / 16, SL1 / 17). Disabled during parameterization.
SPN 608 FMI 9 CAN data bus, malfunction, there is no connection with the indicator.
 

 

SPN 630 FMI 12

Erase or damage two saved zones. Turn on the contact for a few seconds, turn off and wait for the power relay to open. Perform block parameterization. If the fault is stable, replace the VECU unit.
 

SPN 630 FMI 12

The fault is inherent in the memory of DataMax dates. Turn on the contact for a few seconds, turn off and wait for the power relay to open. If the fault is stable, replace the VECU unit.
 

SPN 630 FMI 12

Flash malfunction, erase or damage two saved zones. Perform block parameterization. If the fault persists, replace the unit VECU.
SPN 630 FMI 13 Block parameterization or new block has not been performed. Perform block parameterization.
 

SPN 639 FMI 9

Astronic lever, CAN bus malfunction. Ensure the correct operation of the CAN bus, check the integrity and isolation cable connections (SL3 / 3, SL3 / 4, SL3 / 6, SL3 / 7).
 

SPN 639 FMI 9

EBS does not respond to the CAN data bus. Perform system diagnostic monitoring, check CAN bus connections resistance between two wires must be 60 ohms.
 

SPN 639 FMI 9

The retarder does not respond to the CAN data bus. Perform system diagnostic monitoring, check CAN bus connections, resistance between two wires must be 60 ohms.
 

SPN 639 FMI 9

Astronic, Allison or ZF Ecomat 2, does not respond to the CAN data bus. Perform system diagnostic monitoring, check CAN bus connections, resistance between two wires must be 60 ohms.
 

SPN 639 FMI 9

The tachograph is not responding via the CAN data bus. Verify the correct functioning of the tachograph. Make sure it is correct connections between the tachograph and the unit VECU.
SPN 650 FMI 3 Power relay, short to positive. Check the integrity and insulation of cable compounds relative to +24 V. (SL3 / 9).
 

SPN 650 FMI 4

Power relay, open circuit or short to ground. Check the integrity and insulation of cable connections with respect to ground (SL3 / 9). Run this check after waiting at least 10 seconds after the contact is turned off.
 

SPN 650 FMI 5

Power relay, open circuit. When the contact is turned on, the relay must be closed. Check the integrity and insulation of cable connections (SL3 / 9).
SPN 650 FMI 7 Power relay locked in “closed” position. Ensure the correct operation of the relay.
SPN 650 FMI 7 The power relay is locked in the “open” position. Ensure the correct operation of the relay, check fuse.
 

SPN 701 FMI 3

Drive, reversing lights, double H-shaped gearshift circuit, short to positive.  

Check the integrity and insulation of cable connections with respect to +24 V. (SL1 / 18).

SPN 701 FMI 4 Drive, reversing lights, Double H-shaped gearshift circuit , open circuit or short to ground. Check the integrity and insulation of cable connections with respect to weight. (SL1 / 18).