ENGINE CONTROL SYSTEM 3-43
MAP SENSOR OUTPUT VOLTAGE CHANGE
# 09917-47011: Vaccum pump gauge
09930-89950: 44-pin test cord
09930-99320: Digital tester
$ Tester range:
%%
%%
% V (DC voltage)
1. Disconnect the MAP sensor hose from the intake manifold
(surge tank) side.
2. Connect the gauge to the MAP sensor hose end as shown.
3. While applying negative pressure to the MAP sensor, mea-
sure the “29” terminal voltage. (See the page 3-36 and 3-37.)
MAP sensor output voltage change:
Negative pressure
kPa (kg/cm
2
, mmHg)
“29” terminal
voltage (V)
0
(0, 0)
40
(0.4, 300)
80
(0.8, 600)
4.00
2.42 0.84
(at 1013 hPa barometric pressure)
CTP SWITCH
((
((
(# 09930-99320: Digital tester
((
((
()Tester range:
**
**
* (Continuity)
1. Disconnect the CTP switch wire.
2. Inspect continuity between the CTP switch terminal and the
body ground.
CTP switch function:
Throttle position Continuity
Fully closed
(switch contact in)
Ye s
Not fully closed
(switch contact out)
No
MAP sensor
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