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

Stick Coil Circuit

1. ECU

2. Water-proof Joint C

3. Stick Coils

4. Engine Stop Switch

5. Ignition Switch

6. Ignition Fuse 10 A

7. Main Fuse 30 A

8. Battery

9. Frame Ground

10. Joint Connector

Radiator Fan Relay (Service Code 56)

Radiator Fan Relay Removal/Installation

_• Radiator fan relay is built in the relay box.

_• Remove the relay box (see Relay Box Removal in the

Electrical System chapter).

Radiator Fan Relay Inspection

_• Refer to the Relay Circuit Inspection in the Electrical Sys- tem chapter.

_• Remove the relay box and ECU (see ECU Removal). Do

not disconnect the relay box and ECU connectors. Check

the wiring for continuity, using the following diagram.

If wiring and radiator fan relay are good, check the ECU for its ground, and power supply (see ECU Power Supply Inspection). If the ground and power supply are good, replace the ECU (see ECU Removal/Installation).

Radiator Fan Relay Circuit

1. ECU

2. Water-proof Joint C

3. Water-proof Joint B

4. Radiator Fan Fuse 15 A

5. Relay Box

6. Radiator Fan Relay

7. Main Fuse 30 A

8. Battery

9. Frame Ground

10. Joint Connector

Subthrottle Valve Actuator (Service Code 62)

Subthrottle Valve Actuator Removal

Subthrottle Valve Actuator Audible Inspection

NOTE

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

_• Turn the ignition switch ON and ensure that the actuator valves open and close (make light sounds) several times

within seconds, and then close at the idle throttle opening position.

_• Turn the ignition switch OFF.

If the actuator does not work as described above, do the

visual inspection.

Subthrottle Valve Actuator Inspection

_• Remove the air cleaner housing (see Air Cleaner Housing Removal).

_• Turn the ignition switch ON.

_• Check to see that all the subthrottle valves [A] open and

close smoothly.

If the subthrottle valves do not operate, check the actuator internal resistance (see Subthrottle Valve Actuator Resis- tance Inspection).

Subthrottle Valve Actuator Resistance Inspection

_• Turn the ignition switch OFF.

_• Remove the air cleaner housing (see Air Cleaner Housing

Removal).

_• Disconnect the subthrottle valve actuator connector [A].

_• Connect a digital meter to the subthrottle valve actuator connector [A].

_• Measure the subthrottle valve actuator resistance.

Subthrottle Valve Actuator Resistance Connections: BK lead [1] ←→ P lead [2]

G lead [3] ←→ W/BL lead [4] Standard: About 5.5  7.5 kΩ

Special Tool - Hand Tester: 57001-1394

If the reading is out of the range, replace the actuator along with the throttle body assy.

If the reading is within the range, check the input voltage (see Subthrottle Valve Actuator Input Voltage Inspection).

Subthrottle Valve Actuator (Service Code 62)

Subthrottle Valve Actuator Input Voltage Inspection

NOTE

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

_• Turn the ignition switch OFF.

_• Connect the peak voltage adapter [A] and a digital meter

[B] to the connector [C], using the needle adapter set [D].

Special Tools - Peak Voltage Adapter: 57001-1415

Type: KEK-54-9-B Brand: KOWA SEIKI

Needle Adapter Set: 57001-1457

Subthrottle Valve Actuator Input Voltage Connections to Harness Connector

1. Meter (+) → BK/BL lead [1] Meter (–) → P lead [2]

2. Meter (+) → W/BL lead [3] Meter (–) → G/Y lead [4]

_• Measure the actuator input voltage with the engine

stopped, and with the connector joined.

_• Turn the ignition switch ON.