Oxygen Sensor-not activated (Service Code 33) (Europe Models)

Oxygen Sensor Removal/Installation

_• Refer to the Oxygen Sensor Removal/Installation in the Electrical System chapter.

Oxygen Sensor Inspection

_• Warm up the engine thoroughly until the radiator fan starts.

_• Turn the ignition switch OFF.

_• Remove:

Left Lower Fairing (see Lower Fairing Removal in the

Frame chapter)

Engine Sprocket Cover (see Engine Sprocket Removal in the Final Drive chapter)

_• Connect a digital voltmeter [A] to the oxygen sensor con-

nector [B] (main harness side), using the needle adapter

set [C].

Special Tool - Needle Adapter Set: 57001-1457

Oxygen Sensor Output Voltage

Connections to Oxygen Sensor Connector Meter (+) → BL/Y lead

Meter (−) → BR/BK lead

_• Remove the air switching valve hose from the fitting.

_• Install the suitable plugs [A] on the fitting [B] and shut off

the secondary air.

_• Turn the ignition switch ON.

_• Start the engine, and let it idle.

_• Measure the output voltage of the sensor with the con-

nector joined.

Oxygen Sensor Output Voltage (with Plugs) Standard: 0.7 V or more

_• Next, remove the plugs from the fitting [A] with idling.

Oxygen Sensor-not activated (Service Code 33) (Europe Models)

_• Measure the output voltage of the sensor with the con- nector joined.

Oxygen Sensor Output Voltage (without Plugs) Standard: 0.2 V or less

If the reading is within range (with plugs: 0.7 V or more, without plugs: 0.2 V or less), the oxygen sensor is good. If the reading is without range, replace the oxygen sensor (see Oxygen Sensor Removal/Installation in the Electrical System chapter).

Oxygen Sensor Circuit

1. ECU

2. Oxygen Sensor

3. Water-proof Joint E

4. Water-proof Joint D

5. Oxygen Sensor Heater Fuse 10 A

6. Main Fuse 30 A

7. Battery

8. Frame Ground

9. Joint Connector

Stick Coils #1, #2: (Service Code 51, 52)

Stick Coil #1: Service Code 51

Stick Coil #2: Service Code 52

Stick Coil Removal/Installation

_• Refer to the Stick Coil (Ignition Coil together with Spark Plug Cap) Removal/Installation in the Electrical System

chapter.

Stick Coil Input Voltage Inspection

NOTE

○^{Be sure the battery is fully charged.}

_• Turn the ignition switch OFF.

_• Remove the ECU (see ECU Removal). Do not disconnect

the ECU connector.

_• Connect a digital voltmeter [A] as shown, with the needle adapter set [B].

○^{Measure the input voltage to each primary winding of the}

ignition coils with the engine stopped, and with the con-

nectors joined.

_• Turn the ignition switch ON.

Stick Coil Input Voltage at ECU Connections for Stick Coil #1

Meter (+) → BK lead (terminal 43) Meter (–) → BK/Y lead (terminal 51)

Connections for Stick Coil #2

Meter (+) → BK/G lead (terminal 52) Meter (–) → BK/Y lead (terminal 51)

Input Voltage at ecu

Standard: Battery Voltage (12.8 V or more)

If the reading is out of the standard, check the wiring (see next wiring diagram).

If the reading is good, the input voltage is normal. Crank the engine, and check the peak voltage of the stick coils (see Stick Coil Primary Peak Voltage in the Electrical Sys- tem chapter) in order to check the primary coils.