DAF CF65, CF75, CF85 Series . Manual - part 12

 

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DAF CF65, CF75, CF85 Series . Manual - part 12

 

 

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1-15

UPEC fault codes

UPEC

DAVIE XD diagnostics manual 

2

65-2

No CAN message received from transmission 
ECU due to: 
-

communication problem with transmission 
ECU

-

No noticeable system limitation in UPEC

Communication problem via V-CAN on pin B11 or 
pin B12 of the ECU due to:
-

interruption on pin B11 or B12 of the ECU

-

short circuit to supply on pin B11 or B12 of 
the ECU

-

Rev counter gives no reading

-

Thermometer gives no reading

Communication problem via V-CAN on pin B12 of 
the ECU due to:
-

short circuit to earth on pin B12 of the ECU

-

Rev counter gives no reading

66-2

No CAN message received from transmission 
ECU due to: 
-

communication problem with transmission 
ECU

-

No noticeable system limitation in UPEC

Communication problem via V-CAN on pin B11 or 
pin B12 of the ECU due to:
-

interruption on pin B11 or B12 of the ECU

-

short circuit to supply on pin B11 or B12 of 
the ECU

-

Rev counter gives no reading

-

Thermometer gives no reading

Communication problem via V-CAN on pin B12 of 
the ECU due to:
-

short circuit to earth on pin B12 of the ECU

-

Rev counter gives no reading

67-2

No CAN message received from transmission 
ECU due to: 
-

communication problem with transmission 
ECU

-

No noticeable system limitation in UPEC

Communication problem via V-CAN on pin B11 or 
pin B12 of the ECU due to:
-

interruption on pin B11 or B12 of the ECU

-

short circuit to supply on pin B11 or B12 of 
the ECU

-

Rev counter gives no reading

-

Thermometer gives no reading

Communication problem via V-CAN on pin B12 of 
the ECU due to:
-

short circuit to earth on pin B12 of the ECU

-

Rev counter gives no reading

68-1

No CAN message received from transmission 
ECU due to: 
-

communication problem with transmission 
ECU

-

No noticeable system limitation in UPEC

Communication problem via V-CAN on pin B11 or 
pin B12 of the ECU due to:
-

interruption on pin B11 or B12 of the ECU

-

short circuit to supply on pin B11 or B12 of 
the ECU

-

Rev counter gives no reading

-

Thermometer gives no reading

Communication problem via V-CAN on pin B12 of 
the ECU due to:
-

short circuit to earth on pin B12 of the ECU

-

Rev counter gives no reading

Fault code

Fault code description with possible cause

Symptom

UPEC

1-16

©

UPEC fault codes

2

DAVIE XD diagnostics manual

69-1

No communication with immobiliser when 
switching on the ignition, or immobiliser code 
does not correspond with UPEC code due to:
-

defective immobiliser

-

ignition key not adjusted to the immobiliser

-

immobiliser not matched to UPEC ECU

-

voltage on pin B15 but no voltage on pins B3 
and B4 of the ECU

-

Engine starts but will not fire

Communication problem via V-CAN on pin B11 
and/or pin B12 of the ECU due to:
-

interruption on pin B11 and/or pin B12 of the 
ECU

-

short circuit to supply on pin B11 of the ECU

-

Engine starts but will not fire

-

Several systems will output error messages 
in connection with the CAN communication

Communication problem via V-CAN on pin B12 of 
the ECU due to:
-

short circuit to supply on pin B12 of the ECU

-

Several systems will output error messages 
in connection with the CAN communication

71-1

Short circuit to supply of glow relay (G014) on pin 
B10 of the ECU

-

Glow function cannot be activated

71-2

Short circuit to earth of glow relay (G014) on pin 
B10 of the ECU

-

Glow function permanently activated

71-8

Interruption in glow relay (G014) on pin B10 of the 
ECU

-

Glow function cannot be activated

73-1

Short circuit to supply of exhaust brake solenoid 
valve (B192) on pin B9 of the ECU

-

Exhaust brake cannot be activated

73-2

Short circuit to earth of exhaust brake solenoid 
valve (B192) on pin B9 of the ECU

-

Exhaust brake permanently activated

No supply voltage on glow relay, exhaust brake 
and DEB due to faulty fuse

-

Glow function cannot be activated

-

Exhaust brake cannot be activated

-

DEB cannot be activated

73-8

Interruption in exhaust brake solenoid valve 
(B192) on pin B9 of the ECU

-

Exhaust brake cannot be activated

74-1

Short circuit to supply of connection point for DIP 
stop indicator on pin B6 of the ECU

-

No noticeable system limitation in UPEC

74-2

Short circuit to earth of connection point for DIP 
stop indicator on pin B6 of the ECU

-

No noticeable system limitation in UPEC

74-8

Interruption in connection point for DIP stop 
indicator on pin B6 of the ECU

-

No noticeable system limitation in UPEC

75-1

Short circuit to supply of DEB solenoid valve 
(B247) on pin B18 of the ECU

-

Reduced braking power of DEB

75-2

Short circuit to earth of DEB solenoid valve 
(B247) on pin B18 of the ECU

-

DEB permanently activated

-

Irregular engine running

75-8

Interruption in DEB solenoid valve (B247) on pin 
B18 of the ECU

-

Reduced braking power of DEB

77-1

Short circuit to supply of DEB solenoid valve 
(B248) on pin A8 of the ECU

-

Reduced braking power of DEB

77-2

Short circuit to earth of DEB solenoid valve 
(B248) on pin A8 of the ECU

-

DEB permanently activated

-

Irregular engine running

77-8

Interruption in DEB solenoid valve (B248) on pin 
A8 of the ECU

-

Reduced braking power of DEB

Fault code

Fault code description with possible cause

Symptom

©

1-17

UPEC fault codes

UPEC

DAVIE XD diagnostics manual 

2

78-1

Short circuit to supply of electronically controlled 
fan clutch (B335) on pin A9 of the ECU

-

Fan speed too high

78-2

Short circuit to earth of electronically controlled 
fan clutch (B335) on pin A9 of the ECU

-

Fan speed too low

78-8

Speed of electronically controlled fan clutch 
(B335) cannot be controlled due to:
-

interruption on pin A9 and/or A16 of the ECU

-

interruption on pins A9 and B30 of the ECU

-

Fan speed is no longer controlled and 
increases to maximum

81-8

When the steering column switch is operated, 
several input signals are present at the ECU at 
the same time due to:
-

short circuit to supply on pin B34 of the ECU

-

Cruise control function cannot be activated

-

At the steering column switch the "RES" 
function is overruled by the "Set+" function

When the steering column switch is operated, 
several input signals are present at the ECU at 
the same time due to:
-

short circuit to supply on pin B32 of the ECU

-

Cruise control function cannot be activated

-

At the steering column switch the "RES" 
function is overruled by the "Set-" function

When the steering column switch is operated, 
several input signals are present at the ECU at 
the same time due to:
-

short circuit to supply on pin B33 of the ECU

-

"RES" function at the steering column switch 
cannot be activated

When the steering column switch is operated, 
several input signals are present at the ECU at 
the same time due to:
-

short circuit to supply on pin B24 of the ECU

-

Cruise control function cannot be activated

-

Control function for engine speed control 
cannot be activated

82-4

Input signal, via clutch pedal proximity switch 
(E575), on pin B20 of the ECU remains present, 
despite the fact that the vehicle has already 
reached a certain speed. This is due to:
-

defective proximity switch

-

short circuit to supply on pin B20

-

towing the vehicle with the engine running

-

No system response when operating the 
clutch pedal

83-1

Short circuit to supply on pin B28 of the ECU

-

Engine speed/torque limiting control cannot 
be activated

83-8

Unacceptable load on pin B28 of the ECU due to:
-

excessive contact resistance on connection 
point

-

Engine speed/torque limiting control cannot 
be activated

Fault code

Fault code description with possible cause

Symptom

UPEC

1-18

©

UPEC fault codes

2

DAVIE XD diagnostics manual

 

 

 

 

 

 

 

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