Tohatsu MFS 30 — проверка электрической системы и датчиков на лодочном моторе [266/319]

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8-20

Electrical System

25/30 2006

3) Inspection of MAT

(Manifold Temperature) Sensor

1. Measure ambient temperature.

2. Connect computer to outboard motor, and use diagnosis

system to display "Air Temperature (Intake Air

Temperature)".

3. Replace MAT sensor if difference between ambient

temperature and "Air Temperature (Intake Air Temperature)"

is over ± 5°C.

Perform inspection MAT sensor when engine is

cold.

MAT (Intake Air Temperature)

Sensor Resistance (Reference Value) :

2.35 to 2.55 Ω (at 20°C)

0.30 to 0.35 Ω (at 80°C)

4. Measure MAT sensor resistance. Replace if the resistance is

out of specified range.

4) Inspection of Fuel Feed Pump (FFP).

1. Use "Function Test or Air Purging" of diagnosis system to

inspect fuel feed pump (FFP) operation.

2. Check that fuel feed pump (FFP) 1 operation sound is

heard. If not, check fuel system.

This test can be made without removing parts.

• This test can be made without removing parts.

• Fuel feed pump (FFP) operates two seconds

after performing "Air Purging".

Inspection of Throttle Position Sensor

1. Check throttle position sensor resistance. Replace throttle

body with throttle position sensor if other than specified

value.

Throttle Position Sensor Resistance :

Throttle Position Fully Closed Fully Open

Blue - Black 4.0 to 6.0kΩ

Yellow - Black 0.4 to 1.0kΩ 3.2 to 3.8kΩ

Yellow - Blue 3.8 to 4.6kΩ 1.2 to 1.6kΩ

1 B (Black)

2 Y (Yellow)

3 L (Blue)

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