Common Rail Diesel Technology

Common rail diesel technology
 
When a diesel ECU signals injector problems, it is impossible to tell which injector is at fault. BBA can now test & rebuild individual and sets of common rail diesel injectors. Symptoms are system shutdown (too high/low pressure) or erratic idle with a slight knock when you raise revs.

Common rail diesel technology

  BBA have identified that a high pressure common rail diesel pump fitted to Peugeot and Citroen applications is failing commonly. We can carry out a full test on the pump for you.

Diesel ECUs

Common rail diesel technology
  BBA now offer timed collection and testing for all diesel ECUs.

Testing Bosch EDC diesel pump actuator

Common rail diesel technology
  Actuator commonly failing on the Bosch EDC diesel pump range, below is a comprehensive table for fault diagnosis. BBA now test and rebuild.

Designation

Unit

Set Value

Min

Max

POSITIONER TESTING    

Test temperature

deg. C

22.5

15.0

30.0

Impedance, connections 4 & 7

ohms

0.7

0.4

1.0

Test temperature

deg. C

60.0

50.0

70.0

Impedance, connections 4 & 7

ohms

0.775

0.450

1.100

Impedance, connection 4 & ground

M ohms

1.0

Impedance, connections 2 & 7

M ohms

1.0

Impedance, connections 4 & 6

M ohms

1.0

Impedance, connection 7 & ground

M ohms

1.0

HALF DIFFERENTIAL INDUCTIVE PICKUP

Impedance, connections 1 & 3

K ohms

5.7

4.9

6.5

Impedance, connections 2 & 3

K ohms

5.7

4.9

6.5

Impedance, connections 1 & 2

K ohms

11.4

9.8

13.0

Impedance, connection 1 & ground

M ohms

1.0

Impedance, connection 2 & ground

M ohms

1.0

Impedance, connection 3 & ground

M ohms

1.0

FEUL TEMPERATURE SENSOR

Test temperature

deg. C

22.5

15.0

30.0

Impedance, connections 5 & 6

K ohms

2.6

1.2

4.0

Test temperature deg. C 60.0 50.0 70.0
Impedance, connections 5 & 6

K ohms

0.75

0.30

1.20

Impedance, connection 5 & ground

M ohms

1.0

Impedance, connection 6 & ground

M ohms

1.0

SOLENOID VALVE START OF DELIVERY
Test temperature deg. C 22.5 15.0 30.0
Impedance, connections 1 & 2 ohms 15.8 14.3 17.3
Test temperature deg. C 60.0 50.0 70.0
Resistance connections 1 & 2 ohms 18.25 15.50 21.00
EXCESS-FUEL STOP/SHUTOFF STOP
Excess-fuel stop M volts 4385 4120 4650
Shutoff stop

M volts

750

650

850