vauxhall Workshop Repair Guides

Vauxhall Workshop Service and Repair Manuals

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Omega B

Digital Diesel Electronics DDE 2.1 F0:DATA LIST

 

No.

TECH 1-DISPLAY

Conditions for Checking

Nominal Value

Nominal Value

Terminal

01

BATTERY VOLTAGE

Ignition ON

 

-

16, 17, 18, 19

 

 

Switch off all consumers

11.5 to 13.5 V

 

 

 

 

 

 

 

 

 

 

Start engine

greater than 8 V

 

 

 

 

 

 

 

 

 

 

Engine running at idle speed, operating temperature

13.0 to 15.0 V

 

 

 

 

 

 

 

 

 

Note:

If the nominal value for the first test step is not attained under the above checking conditions, carry out trouble-shooting according to the following instructions. If the nominal value is okay at the first test step, but the voltage does not attain the prescribed value on starting although the starter is running, check for the fault in the starter circuit. If the nominal values for the first two test steps are okay, but the nominal value for the third test step is not, check for the fault in the alternator or the regulator circuit.

 

Trouble-shooting

 

Nominal Value

Cause of Fault:

(If nominal value is not attained)

 

·   Ignition OFF

·   Disconnect reverse battery protection relay K17

·   Using multimeter, measure voltage

from:       base of reverse battery protection relay K17 Ter. 8

to:           ground

 

11.5 to 13.5 V

·   Short circuit to ground

from:       battery positive terminal Ter. 30

to:           base of reverse battery protection relay K17 Ter. 8

·   Circuit interruption

from:       battery positive terminal Ter. 30

to:           base of reverse battery protection relay K17 Ter. 8

·   Battery discharged

·   Battery short circuit in cell

·   Corroded battery contacts

·   Poor battery ground connection

 

 

 

·   Using multimeter, measure voltage

from:       base of reverse battery protection relay K17 Ter. 6

to:           ground

lower than 0.1 V

·   Short circuit to voltage

from:       base of reverse battery protection relay K17 Ter. 6

to:           wiring harness plug for switch S1 Ter. 15 (vehicles without anti-theft warning system/ immobilizer)

to:           wiring harness plug for control unit, anti-theft warning system K94 Ter. 3 (vehicles with anti-theft warning  system)

to:           wiring harness plug for control unit, immobilizer K117 Ter. 3 (vehicles with immobilizer)

·   Fault in circuit for anti-theft warning system/ immobilizer (see Checking Procedures for "Electronic Body Systems")

 

 

 

·   Ignition ON

·   Using multimeter, measure voltage

from:       base of reverse battery protection relay K17 Ter. 6

to:           ground

11.5 to 13.5 V

·   Short circuit to ground/ circuit interruption

from:       base of reverse battery protection relay K17 Ter. 6

to:           wiring harness plug for switch S1 Ter. 15 (vehicles without anti-theft warning system/ immobilizer)

to:           wiring harness plug for control unit, anti-theft warning system K94 Ter. 3 (vehicles with anti-theft warning system)

to:           wiring harness plug for control unit, immobilizer K117 Ter. 3 (vehicles with immobilizer)

·   Fault in circuit for anti-theft warning system/ immobilizer (see Checking Procedures for "Electronic Body Systems")

 

 

 

·   Using multimeter, measure voltage

from:       base of reverse battery protection relay K17 Ter. 6

to:           base of reverse battery protection relay K17 Ter. 4

11.5 to 13.5 V

·   Circuit interruption

from:       base of reverse battery protection relay K17 Ter. 4

to:           ground

 

 

 

·   Ignition OFF

·   Using multimeter, measure voltage

from:       base of reverse battery protection relay K17 Ter. 2

to:           ground

lower than 0.1 V

·   Short circuit to voltage

from:       base of reverse battery protection relay K17 Ter. 2

to:           wiring harness plug for DDE control unit K70 Ter. 16 or Ter. 17

to:           wiring harness plug for injection pump actuator P68 Ter. 7

to:           wiring harness plug for exhaust gas recirculation solenoid valve Y18 Ter. 2

to:           wiring harness plug for injection adjuster solenoid valve Y20 Ter. 2

to:           wiring harness plug for preheater relay K25 Ter. 12

 

 

 

 

 

Note:

If the nominal value is not attained, also carry out test steps 28/ 29 (preheater relay), test step 21 (injection pump actuator), test step 33 (exhaust gas recirculation solenoid valve), test step 22 (injection adjuster solenoid valve)

 

 

 

 

 

·   DDE control unit K70 defective

 

 

 

·   Ignition ON

·   Bridge base of reverse battery protection relay K17 with electrically fused jumper

from:       base of reverse battery protection relay K17 Ter. 8

to:           base of reverse battery protection relay K17 Ter. 2

·   TECH 1 parameter BATTERY VOLTAGE

Communication possible

11.5 to 13.5 V

No communication:

·   Short circuit to ground

from:       base of reverse battery protection relay K17 Ter. 2

to:           wiring harness plug for DDE control unit K70 Ter. 16 or Ter. 17

to:           wiring harness plug for injection pump actuator P68 Ter. 7

to:           wiring harness plug for exhaust gas recirculation solenoid valve Y18 Ter. 2

to:           wiring harness plug for injection adjuster solenoid valve Y20 Ter. 2

to:           wiring harness plug for preheater relay K25 Ter. 12

 

 

 

 

 

·   Circuit interruption

from:       base of reverse battery protection relay K17 Ter. 2

to:           wiring harness plug for DDE control unit K70 Ter. 16 or Ter. 17

 

 

 

 

 

Note:

If the nominal value is not attained, also carry out test steps 28/ 29 (preheater relay), test step 21 (injection pump actuator), test step 33 (exhaust gas recirculation solenoid valve), test step 22 (injection adjuster solenoid valve)

 

 

 

 

 

·   DDE control unit K70 defective

 

 

 

 

If nominal values are attained

·   Reverse battery protection relay K17 defective

 

 

 

 

 

 

 

 

 

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