Vauxhall Workshop Service and Repair Manuals

No.

TECH 1 Display

Conditions for Checking

Nominal Value

Trouble Codes

Terminal

16

SPARK ADVANCE

Engine running at idle speed, operating temperature

8° to 12 °CA BTDC

-

D 10/D 1

Trouble-shooting:

Nominal Value:

Cause of Fault:

(If nominal value is not attained)

·   This value is not an actually measured value; it is an ignition value taken from the control unit. It is used primarily to improve understanding of the system. All consumers should be switched off.

·   If the firing angle values rear by TECH 1 deviate significantly from the above nominal values, check various sensor input signals:

1.  Intake manifold pressure sensor

2.  Throttle valve potentiometer

3.  Intake air temperature

4.  Coolant temperature

5.  P/N switch in P or N position for AT

6.  AC switch in OFF position