Checking The Intake Air Temperature Sensor; Checking The Fuel Injectors; Checking The Throttle Servo Motor - Yamaha XT1200Z(Z) 2010 Service Manual

EAS28421
CHECKING THE INTAKE AIR
TEMPERATURE SENSOR
1. Remove:
• Intake air temperature sensor
(from the air filter case.)
EWA14110
WARNING
• 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.
Intake air temperature sensor re-
sistance
5.40–6.60 kΩ at 0 °C (32 °F)
290–390 Ω at 80 °C (176 °F)
M MMM M MMM M M MMM M
a. Connect the pocket tester (Ω × 1k/ × 100) to
the intake air temperature sensor terminals
as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
b. Immerse the intake air temperature sensor
"1" in a container filled with water "2".
TIP
Make sure the intake air temperature sensor ter-
minals do not get wet.
c. Place a thermometer "3" in the water.
3
d. Heat the water or let it cool down to the spec-
ified temperatures.
e. Measure the intake air temperature sensor
resistance.
L LLL L LLL L L LLL L
M MMM M M MMM M M MMM M
1
2
L LLL L L LLL L L LLL L
ELECTRICAL COMPONENTS
3. Install:
• Intake air temperature sensor
EAS23P1072

CHECKING THE FUEL INJECTORS

The following procedure applies to all of the fuel
injectors.
1. Remove:
• Fuel injector
Refer to "THROTTLE BODIES" on page 7-5.
2. Check:
• Fuel injector resistance
Out of specification → Replace the fuel injec-
tor.
M MMM M MMM M
MMM
a. Disconnect the fuel injector coupler from the
fuel injector.
b. Connect the pocket tester (Ω × 10) to the fuel
injector coupler as shown.
• Positive tester probe →
Injector terminal "1"
• Negative tester probe →
Injector terminal "2"
c. Measure the fuel injector resistance.
L LLL L LLL L
EAS23P1102

CHECKING THE THROTTLE SERVO MOTOR

1. Remove:
• Air filter case
LLL
Refer to "GENERAL CHASSIS" on page 4-1.
8-155
Intake air temperature sensor
screw
1.2 Nm (0.12 m·kgf, 0.87 ft·lbf)
Resistance
12.0 Ω at 20 °C (68 °F)
M MMM M M MMM M M MMM M
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
1 2
L LLL L L LLL L L LLL L
M MMM M MMM
L LLL L LLL