ELECTRICAL COMPONENTS
8-70
d. Slowly heat the coolant, and then let it cool
to the specified temperature indicated in
the table.
e. Check the coolant temperature sensor for
continuity at the temperatures indicated in
the table.
EAM30305
CHECKING THE THROTTLE POSITION
SENSOR INPUT VOLTAGE
1. Check:
• Throttle position sensor input voltage
Out of specification Replace the ECU.
a. Connect the test harness S– pressure
sensor (3P) to the throttle position sensor
coupler and the wire harness.
b. Connect the digital circuit tester (DCV) to
the test harness S– pressure sensor (3P).
c. Start the engine.
d. Measure the throttle position sensor input
voltage.
EAM30307
CHECKING THE INTAKE AIR
TEMPERATURE SENSOR
1. Remove:
• Intake air temperature sensor
(from the air filter case)
EWA14110
• Handle the intake air temperature sensor
with special care.
• Never subject the intake air temperature
sensor to strong shocks. If the intake air
temperature sensor is dropped, replace it.
2. Check:
• Intake air temperature sensor resistance
Out of specification Replace.
a. Connect the digital circuit tester () to the
intake air temperature sensor terminal.
Throttle position sensor input
voltage
4–6 V
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
Test harness S– pressure sensor
(3P)
90890-03207
Test harness S– pressure sensor
(3P)
YU-03207
• Positive tester probe
Blue “1”
• Negative tester probe
Black/Blue “2”
Intake air temperature sensor re-
sistance
5400–6600 at 0 C (5400–6600
at 32 F)
Intake air temperature sensor re-
sistance
290–390 at 80 C (290–390 at
176 F)
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
• Positive tester probe
Brown/White “1”
• Negative tester probe
Black/Blue “2”
2
1
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