Suzuki DF 40 - Page 94

3-39 ENGINE CONTROL SYSTEM
MAP SENSOR OUTPUT VOLTAGE CHANGE
z z
z z
z 09917-47910 : Vaccum pump gauge
09930-89940 : 12-pin test cord
09930-99320 : Digital tester
Tester range :
- -
- -
- V (DC voltage)
(1) Disconnect MAP sensor hose from gas filter (surge tank)
side.
(2) Connect the gauge to MAP sensor hose end as shown.
(3) While applying negative pressure to MAP sensor, measure
“D7” terminal voltage. (See page 3-33 and 3-34 for proce-
dure.)
MAP sensor output voltage change :
Negative pressure
kPa (kg/cm
2
, mm Hg)
“D7” terminal
voltage (V)
0
(0, 0)
40
(0.4, 300)
80
(0.8, 600)
4.00 2.42 0.84
(at 1013 hPa baro.)
CTP SWITCH
z z
z z
z 09930-99320 : Digital tester
rr
rr
r Tester range :
^ ^
^ ^
^ (Continuity)
(1) Disconnect CTP switch wire.
(2) Check continuity between CTP switch terminal and body
ground.
CTP switch function :
Throttle position Continuity
Fully closed
(switch pushed)
Ye s
Not fully closed
(switch free)
No
s