Engine does not start (MIL does not blink) 1. ECM power Input voltage Inspection

Disconnect the ECM 33P (Black) connector [1]

[1]

(page 4-50).

Turn the ignition switch ON and engine stop switch

" ".

Measure the voltage at the ECM 33P (Black)

Bl/Bu

connector of the wire side and ground.

Connection: Black/blue (+) – Ground (–)

Standard:

Battery voltage

TOOL:

Test probe

07ZAJ-RDJA110

Does the standard voltage exist?

YES

–GO TO STEP 2.

NO

–•

Open circuit in Black/blue wire

•

Faulty ignition switch

• Blown main fuse (30 A)

• Blown FI, IGN fuse (10 A)

• Faulty engine stop switch

2. Sensor Unit Power Line Inspection

Turn the ignition switch OFF.

[1]

Check for continuity between the ECM 33P (Black)

connector [1] of the wire side and ground.

Connection: Yellow/red – Ground

TOOL:

Test probe

07ZAJ-RDJA110

Y/R

Is there continuity?

YES

–Short circuit in Yellow/red wire

NO

–GO TO STEP 3.

ECM Ground Line Inspection

 

Turn the ignition switch OFF.
					[1]
Check for continuity between the ECM 33P (Black)
connector [1] of the wire side and ground.	G
Connection: Green/black – Ground
		Green – Ground
		Green – Ground
			G		G/Bl
TOOL:
Test probe	07ZAJ-RDJA110
Is there continuity?
YES	–Replace the ECM with a known good one,
	and recheck.
NO	–•	Open circuit in Green/black wire

• Open circuit in Green wires

 

4-49

PGM-FI SYSTEM

 

REMOVAL/ INSTALLATION
Remove the reserve tank cover (page 2-4).
[1]
Turn the ignition switch OFF.
Disconnect the ECM 33P (Black) connector [1].
Remove the rubber holder [2] and ECM [3].
Remove the ECM from the rubber holder.
Installation is in the reverse order of removal.

 

[2]
	[3]

 

4-50

IGNITION SYSTEM

 

 

SERVICE INFORMATION·····························5-2 IGNITION SYSTEM INSPECTION ················5-4

 

TROUBLESHOOTING···································5-2 IGNITION TIMING ·········································5-6

 

SYSTEM LOCATION·····································5-3 IGNITION COIL ·············································5-6

 

SYSTEM DIAGRAM ······································5-3

 

 

5-1

IGNITION SYSTEM

SERVICE INFORMATION

 

GENERAL

 

• When servicing the ignition system, always follow the steps in the troubleshooting table (page 5-2).

• A faulty ignition system is often related to poorly connected or corroded connections. Check those connections before proceeding.

 

TROUBLESHOOTING

 

• Inspect the following before diagnosing the system.

– Faulty spark plug

– Loose spark plug cap or spark plug wire connection

– Water got into the spark plug cap (Leaking the ignition coil secondary voltage)

 

• "Initial voltage" of the ignition primary coil is the battery voltage with the ignition switch turned ON and engine stop switch " " (The engine is not cranked by the starter motor).

 

	Unusual condition		Probable cause (Check in numerical order)
Ignition coil	No initial voltage with the ignition	1.	Faulty ignition switch
primary voltage	switch turned ON and engine stop	2.	An open circuit in Black/blue wire between the ignition coil
	switch " " (Other electrical		and engine stop switch
	components are normal).	3.	An open circuit in Black/green or Black/red wires between
			the engine stop switch and ignition switch
		4.	Loose or poor connection of the primary terminal, or an
			open circuit in the primary coil
		5.	Faulty ECM (in case when the initial voltage is normal with
			the ECM connector disconnected).
		6.	Faulty engine stop switch
	Initial voltage is normal, but it drops by	1.	Incorrect peak voltage adaptor connections (System is
	2 – 4 V while cranking the engine.		normal if measured voltage is over the specifications with
			reverse connections).
		2.	Battery is undercharged (Voltage drops largely when the
			engine is started).
		3.	No voltage between the Black/blue (+) wire and body
			ground (–) at the ECM connector or poor connection of the
			ECM connector
		4.	An open circuit or loose connection in Green or Green/
			black wire at the ECM
		5.	An open circuit or loose connection in Green/red wire
			between the ignition coil and ECM
		6.	Faulty sidestand switch or neutral switch or related wires
		7.	Faulty CKP sensor (Measure peak voltage)
		8.	Faulty ECM (in case when above No. 1 through 7 are
			normal).
	Initial voltage is normal but there is no	1.	Incorrect peak voltage adaptor connections
	peak voltage while cranking the	2.	Faulty peak voltage adaptor
	engine.	3.	Faulty CKP sensor
		4.	Faulty ECM (in case when above No. 1 through 3 are
			normal).
	Initial voltage is normal but peak	1.	The multimeter impedance is too low; below 10 MΩ/DCV.
	voltage is lower than the standard	2.	Cranking speed is too slow (Battery is undercharged).
	value.	3.	The sampling timing of the tester and measured pulse were
			not synchronized (System is normal if measured voltage is
			over the standard voltage at least once).
		4.	Faulty ECM (in case when above No. 1 through 3 are
			normal).
	Initial and peak voltages are normal	1.	Faulty spark plug or leaking ignition coil secondary current
	but no spark jumps.	2.	Faulty ignition coil
CKP sensor	Peak voltage is lower than standard	1.	The multimeter impedance is too low; below 10 MΩ/DCV.
	value.	2.	Cranking speed is too low. (Battery is undercharged.)
		3.	The sampling timing of the tester and measured pulse were
			not synchronized (System is normal if measured voltage is
			over the standard voltage at least once).
		4.	Faulty CKP sensor (in case when above No.1 through 3
			are normal).
	No peak voltage	1.	Faulty peak voltage adapter
		2.	Faulty CKP sensor

 

5-2

IGNITION SYSTEM

 

SYSTEM LOCATION

IGNITION SWITCH

 

CLUTCH SWITCH

 

 

BANK ANGLE SENSOR

 

 

IGNITION COIL

 

SPARK PLUG

 

CKP SENSOR

 

NEUTRAL SWITCH

 

SYSTEM DIAGRAM

 

ENGINE STOP SWITCH

 

 

ECM

 

BATTERY

 

MAIN FUSE (30 A)

 

FI, IGN FUSE (10 A)

 

 

SIDESTAND

 

SWITCH

 

IGNITION SWITCH

SIDESTAND

Bl: Black

SWITCH

Bu: Blue

R/W

G: Green

MAIN FUSE (30 A)

Bl/R

Lg: Light green

O: Orange

R: Red

FI, IGN FUSE (10 A)

W: White

BATTERY

BANK

G/W

G

Bl/G

Y: Yellow

ENGINE STOP

ANGLE

Br: Brown

SWITCH

SENSOR

Bl/Bu

 

 

IGNITION

COIL

G/R

W/Y

Bl/Bu

G/Bl

NEUTRAL

G/O

R/Bu

DIODE

Bu/Y

G/R

G

G

Lg/R

CKP

ECM

NEUTRAL

SENSOR

SPARK

SWITCH

PLUG

 

 

5-3

IGNITION SYSTEM

IGNITION SYSTEM INSPECTION

• If there is no spark at the plug, check all connections
[2]
for loose or poor contact before measuring the peak
voltage.
• Use a commercially available digital multimeter with
an impedance of 10 MΩ/DCV minimum.

• The display value differs depending upon the internal impedance of the multimeter.

 

• If using the Imrie diagnostic tester (model 625), follow the manufacturer’s instructions.

 

Connect the peak voltage adaptor [1] to the digital multimeter [2], or use the Imrie diagnostic tester.

 

TOOL:
Imrie diagnostic tester (model 625) or
[1]
Peak voltage adaptor	07HGJ-0020100

with commercially available digital multimeter (impedance 10 MΩ/DCV minimum)