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Home >> Volvo >> 1987 >> 740 L4-2.3L SOHC VIN 88 B230F >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Technical Service Bulletins >> All Technical Service Bulletins >> Tools - Volvo Monotester >> Testing Lambda Control Function (All Engines)
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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.

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