IDLE SPEED ADJUSTMENT
Refer to Chapter Three.
THROTTLE CABLE ADJUSTMENT
Refer to Chapter Three.
THROTTLE POSITION SENSOR
Testing
Perform the following test procedure whenever
the self-diagnostic system (see Chapter Nine)
flashes a TPS error (code 3). Perform the test in the
listed sequence. Each step presumes that the com-
ponents tested in the earlier steps are working prop-
erly. The tests can yield invalid results if they are
performed out of sequence. If a test indicates that a
component is working properly, reconnect the elec-
trical connections and proceed to the next step.
1. Remove the fuel tank, air filter housing and
surge tank as described in this chapter.
2. Refer to the wiring diagram at the end of the
manual and check the continuity of the throttle posi-
tion sensor wiring as follows:
a. Disconnect the triangular, three-pin throttle
position sensor connector (A,
Figure 75
)
from its harness mate.
b. Disconnect the eight-pin connector (
Figure
76
) from the ignitor unit.
c. Check the continuity on the blue, yellow and
black/blue wires between the ignitor connec-
tor and throttle position sensor connector.
d. Make any necessary repairs to the wiring.
3. Refer to
Figure 77
and check the sensor’s R1 re-
sistance as follows:
a. Connect the ohmmeter positive test lead to
the blue terminal in the sensor side of the con-
nector and connect the negative test lead to
the black terminal.
b. Replace the sensor if the R1 resistance is out-
side the range specified in
Table 2
.
4. Refer to
Figure 77
and check the sensor’s R2 re-
sistance as follows:
a. Connect the ohmmeter positive test lead to
the yellow terminal in the sensor side of the
connector and connect the negative test lead
to the black terminal.
224
CHAPTER EIGHT
75
76
77
TPS CONNECTOR
Blk/Blue
Blue
Blk
Blue
Ylw
Ylw
