volvo Workshop Repair Guides

Volvo Workshop Service and Repair Manuals

Tools - CO Adjustment and Function Test|Page 1791 > < Tools - CO Adjustment and Function Test|Page 1789
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FUNCTION CHECK

On the B28F engines, this system can be tested by "closing" the microswitch at the throttle pulley. The reading should be 54 +/- 2 degrees.

NO READING OR INCORRECT READING

^

Check wiring/connector continuity.

^

Check microswitch.

^

Check control unit.

Tools - CO Adjustment and Function Test|Page 1791 > < Tools - CO Adjustment and Function Test|Page 1789