Vauxhall Workshop Service and Repair Manuals

Test

Test Equipment

Nominal

Possible Cause of Fault,

Step

No.

Multimeter

MKM - 587 - A

Test of

Terminal

Notes

Values

Trouble-shooting

1

Ohmmeter

Diagnostic

A/ground

Ignition OFF

approx. 0 W

·   Transfer resistance at

plug (ALDL):

grounding point too high

ground

2

Voltmeter

Diagnostic

B/ground

Ignition ON

greater

·   Lead interruption between

range: 20 V

plug (ALDL):

than 11.5 V

X 13 / Ter. B or X 11 / Ter. 4

DC

excitation

and K 61 / Ter. 13

lead

·   Control unit K 61 defective

3

Voltmeter

Diagnostic

F/ground

Ignition ON

greater

·   Battery voltage too low

range: 20 V

plug (ALDL):

than 11.5 V

·   Lead interruption between

DC

voltage

X 13 / Ter. F and voltage

supply

supply

·  Astra-F:

Fuse F 7 defective

·  Vectra / Cavalier / Calibra:

Fuse F 2 defective

4

Voltmeter

Diagnostic

G/ground

Ignition ON

greater

·   Lead interruption between

range: 20 V

plug (ALDL):

than 9 V

X 13 / Ter. G or

DC

data lead

X 11 / Ter. 5 and

K 61 / Ter. 55

·   Control unit K 61 defective

5

-

Telltale H 30

-

Ignition ON

Telltale ON

·   Telltale H 30 defective

(ALDL):

·  Astra-F:

ground

Fuse F 7 defective

·  Vectra / Cavalier / Calibra:

Fuse F 2 defective

·   Lead interruption between

H 30 and K 61 / Ter. 22

·   Control unit K 61 defective

6

-

TECH 1

-

See

-

-

self-test

TECH 1

Operating

Instructions

Note: After test steps 7 and 8, any stored trouble codes are deleted.

7

Ohmmeter

Control unit

Ter. 14/

Ignition OFF

approx. 0 W

·   Transfer resistance at

plugK 61:

ground

Disconnect

grounding point too high

ground

Ter. 1 9/

plug from

·   Lead interruption between

ground

control unit

K 61 and grounding point

Ter. 24/

K 61

·   Control unit K 61 defective

ground

8

Voltmeter

Control unit

Ter. 18/

Ignition OFF

> 11.5 V

·   Battery voltage too low

range: 20 V

plug K 61:

ground

Disconnnect

·   Lead interruption between Ter.30

DC

voltage supply

Ter. 27/

plug K 61

or Ter. 15 and control unit K 61

Ter. 30

ground

Ignition ON

·   Control unit K 61 defective

and Ter. 15

·   Fuel pump relay K 68 defective