Test C - Air Flow Meter Position Switch - Actron CP9087 Service Manual

Test C - Air Flow Meter Position Switch

Warning: Observe all safety precautions (see page ii) if testing sensor on
vehicle.
1) Do all Test Preparation steps.
2) Connect test leads.
3) Verify test clips make good contact and do not touch
HIGH
LOW
POWER OFF
4) Set RANGE switch to HIGH.
RANGE
5) Set FUNCTION switch to OHMS.
VOLTS
OHMS
FREQUENCY
6) Operate sensor - Watch TEST light for results.
FUNCTION
TEST
Mass Air Flow MAF
Refer to page 2-42.
Connect TEST leads according to diagram C in the compo-
nent drawing.
each other.
Make sure unused clips are not touching anything.
Slowly move the sensor element (pivoting "door" or sliding
cone) back and forth from fully closed to fully open position.
Use a pencil, or similar object, to push on the "door". This will
not harm the sensor.
Good Switch - TEST light switches between being
TEST
ON at top of column and OFF
Bad Switch - TEST light always ON at top of
column or always OFF.
7) Test C is complete.
Set RANGE switch to POWER OFF and remove all
test leads. Reconnect sensor to vehicle if all testing
is done.
2-45