Kawasaki Ninja Service Manual: Intake Air Temperature Sensor Output Voltage Inspection

Kawasaki Ninja Service Manual / Self-Diagnosis System / Intake Air Temperature Sensor (Service Code 13) / Intake Air Temperature Sensor Output Voltage Inspection

NOTE

Be sure the battery is fully charged.

Turn the ignition switch to OFF.
Remove the fuel tank (see Fuel Tank Removal in the Fuel System (DFI) chapter).
Disconnect the intake air temperature sensor connector and connect the measuring adapter [A] between these connectors as shown in the figure.

Main Harness [B] Intake Air Temperature Sensor [C]

Special Tool - Measuring Adapter: 57001-1700

Intake Air Temperature Sensor Output Voltage Inspection

Connect a digital meter [D] to the harness adapter leads.

Intake Air Temperature Sensor Output Voltage Inspection

Intake Air Temperature Sensor Output Voltage Connections to Adapter: Digital Meter (+) → R (sensor R/BK) lead Digital Meter (–) → BK (sensor BR/BK) lead

Measure the output voltage with the engine stopped and the connector joined.
Turn the ignition switch to ON.

Output Voltage Standard: About DC 2.44 ∼ 2.69 V at 25°C (77°F)

NOTE

The output voltage changes according to the intake air temperature.

Turn the ignition switch to OFF.

If the reading is within the standard, check the ECU for its ground, and power supply (see ECU Power Supply Inspection in the Fuel System (DFI) chapter).

If the ground and power supply are good, replace the ECU (see ECU Removal/Installation in the Fuel System (DFI) chapter).

If the reading is out of the standard, remove the ECU and check the wiring for continuity between main harness connectors.

Special Tool - Hand Tester: 57001-1394

Intake Air Temperature Sensor Output Voltage Inspection

Disconnect the ECU and sensor connectors.

Wiring Inspection ECU Connector [A] ←→ Intake Air Temperature Sensor Connector [B] R/BK lead (ECU terminal 37) [C] BR/BK lead (ECU terminal 13) [D]

If the wiring is good, check the intake air temperature sensor resistance (see Intake Air Temperature Sensor Resistance Inspection).

Intake Air Temperature Sensor Installation

Be sure to install the O-ring [A]. Install the intake air temperature sensor. Tighten: Torque - Intake Air Temperature Sensor Screw: 0.8 N·m (0.08 kgf·m, 7 in·lb) Install the damper so ...

Intake Air Temperature Sensor Resistance Inspection

Remove the intake air temperature sensor (see Intake Air Temperature Sensor Removal). Suspend the sensor [A] in a container of machine oil so that the heat-sensitive portion is submerged. S ...

Other materials:

Piston Removal
Remove: Crankshaft (see Crankshaft Removal) Remove the piston together with the connecting rod to the cylinder head side. NOTICE Discard the connecting rod bolts and nuts. To prevent damage to the crankpin surfaces, do not allow the connecting rod bolts to bump against the crankpins. ...

Fuel Type
Use clean, fresh unleaded gasoline with a minimum Antiknock Index of 90. The Antiknock Index is posted on service station pumps. The octane rating of a gasoline is a measure of its resistance to detonation or “knocking.” The Antiknock Index is an average of the Research Octane Number (R ...

For Secondary Fuel Injectors
Remove the fuel tank (see Fuel Tank Removal). Disconnect the secondary fuel injector connector [A]. Connect a digitalmeter to the terminals in each secondary fuel injector [A]. Measure the secondary fuel injector resistance. Secondary Fuel Injector Resistance Standard: Abo ...