5-16
Throttle Position Sensor
(TPS)
INSPECTING
1. Remove the seat, seat base, and seat back; then dis-
connect the three-wire TPS connector plug.
PR533A
NOTE: Prior to testing the TPS, inspect the
three-wire plug connector on the main harness
and the three-pin plug on the TPS for contamina-
tion, broken pins, and/or corrosion.
2. Make sure the ignition switch is in the OFF position;
then select the DC Voltage position on the meter.
3. Connect the black tester lead to terminal A and the
red tester lead to terminal B. Turn the ignition switch
to the ON position. The meter should read 4.5-5.5
DC volts.
PR538A
4. Remove the black tester lead from terminal A and
connect it to terminal C. The meter should read 5.0
DC volts.
NOTE: If the meter does not read as specified,
check for poor connections at the ECU or
open/broken wires in the wiring harness.
5. Turn the ignition switch to the OFF position.
6. Select the OHMS position on the meter; then per-
form the following resistance tests on the TPS.
PR535A
NOTE: If any meter reading is not as specified,
replace or adjust the TPS (see INSTALL-
ING/ADJUSTING in this sub-section).
7. Connect the main harness TPS connector to the TPS;
then using MaxiClips, connect the black tester lead
to the black wire and the red tester lead to the
green/black wire.
PR546A
8. Select the DC Voltage position on the meter and turn
the ignition switch to the ON position. The meter
should read approximately 0.6 DC volts with the
throttle closed and approximately 5.0 DC volts with
the throttle in the full-open position.
NOTE: If the meter readings are as specified, check
the main harness connector at the ECU main har-
ness wiring. If the meter readings are not as speci-
fied, replace the TPS and adjust to specifications
(see INSTALLING/ADJUSTING in this sub-section).
CAUTION
Always make sure the ignition switch is in the OFF
position before disconnecting the ECU.
Throttle Position
Pins
Ohms
Closed
A, B, or C to Ground
Infinity (Open)
A to B
5.0k
A to C
650
B to C
4.5k
Full-Open
A, B, or C to Ground
Infinity (Open)
A to C
3.8k
B to C
1.3k
Manual
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