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FI
SYSTEM
DIAGNOSIS
4·35
,--------
-------------------------------------
Step 3
1) Connect the TP sensor coupler.
2) Insert the needle pointed probes to the injectorlTP sensor
lead wire
coupler.
3) Turn the ignition switch ON.
Measure the TP sensor output voltage at the coupler
(between
CB
PIS and 8 S/Sr) by turning the throttle grip.
_ TP sensor
output
voltage
Throttle valve is closed : Approx. 1.1 V
Throttle valve is opened: Approx. 4.3 V
'T%t,
09900-25008: Multi
circuit
tester
set
09900-25009: Needle pointed probe
set
~
Tester
knob
indication: Voltage
(::-:-::)
Is the voltage OK?
•
Red, PIS or S/Sr wire open or shorted to
ground, or poor
@, @ or
~
connection.
•
If wire and connection are OK, intermittent trou-
YES
ble or faulty ECM.
•
Recheck each terminal and wire harness for
open circuit and poor connection.
NO
If check result is not satisfactory, replace TP sen-
sor with a new one.
ECM couplers