Testing Lambda Control Function (All Engines)
Ground the green wire from the control unit (at the firewall).
The needle on the Monotester should move to:
All CI-Engines 70 degrees or above
LH-Engines MY 1982 38 degrees*
LH-Engines MY 1983- 0 degrees
*NOTE: MONOTESTER switch in position "points resistance" for LH Engines MY 1982.
Reconnect the green wire to the lambda sensor.