Vauxhall Workshop Service and Repair Manuals

No.

TECH 1 Display

Conditions for Checking

Nominal Value

Trouble Codes

Terminal

21

IAC ADAPT. SLOPE

Engine running at idle speed

Operating temperature

124 to 173 steps

56, 57

4, 37

Notes for Trouble-shooting:

Nominal Value:

Cause of Fault:

·   see test step 20

Important:              If the idle speed adjuster wiring harness plug becomes disconnected, the mechanical emergency program is activated.

                          This increases the idle speed to 1200 to 1500 rpm.