Does the MIL blink 21 times?

 

YES	–GO TO STEP 2.
NO	–Intermittent failure
2. O2 Sensor Short Circuit Inspection
Turn the ignition switch OFF.
	[1]
Disconnect the ECM 33P (Black) connector (page
4-50).
Disconnect the O2 sensor cap [1] (page 4-47).
Check for continuity between the O2 sensor cap
terminal [2] and ground.
	[2]
Connection: O2 sensor cap terminal – Ground
Is there continuity?
YES	–Short circuit in Black or Black/white wire
NO	–GO TO STEP 3.

 

 

4-38

PGM-FI SYSTEM

3. O2 Sensor Open Circuit Inspection
Check for continuity between the ECM 33P (Black)
			[2]
connector [1] and O2 sensor cap terminal [2] of the
wire side.
		[1]
Connection: O2 sensor cap terminal – Black/
	white
TOOL:
Test probe	07ZAJ-RDJA110
Is there continuity?				Bl/W
YES	–GO TO STEP 4.
NO	–Open circuit in Black or Black/white wire

O2 Sensor Inspection

Replace the O2 sensor with a known good one (page 4-47).

Connect the ECM 33P (Black) connector.

Start the engine and warm up the engine up to coolant temperature is 80°C/176°F.

Test-ride the motorcycle and recheck the MIL blinking.

Does the MIL blink 21 times?

 

YES – Replace the ECM with a known good one,

and recheck.

 

NO – Faulty original O2sensor

 

MIL 29 BLINKS (IACV)

Before starting the inspection, check for loose or poor contact on the IACV 4P (Black) connector and recheck the MIL blinking.

 

ECM

 

IACV

 

Bu/W

 

Bu/Bl

 

Br/W

 

Br/Bl

 

 

Probable cause

• Open or short circuit in wires (Blue/white, Blue/black, Brown/white, Brown/black) between the IACV and ECM

 

• Faulty IACV

• Faulty ECM

 

4-39

PGM-FI SYSTEM

 

IACV Resistance Inspection

Turn the ignition switch OFF.

Disconnect the IACV 4P (Black) connector [1] (page 7-15).

Measure the resistance at the IACV side connector.

Connection: A (Blue/black) – D (Blue/white)

B (Brown/black) – C (Brown/white) Standard: 110 – 150 Ω (25°C/77°F)

 

Is the resistance within 110 – 150 Ω (25°C/77°F)?

 

YES – GO TO STEP 2.

 

NO – Faulty IACV

 

 

IACV Short Circuit Inspection

Disconnect the ECM 33P (Black) connector (page 4-50).

Check for continuity between the IACV 4P (Black) connector [1] of the wire side and ground.

Connection: Blue/white – Ground Brown/white – Ground Brown/black – Ground Blue/black – Ground

Is there continuity?

YES – • Short circuit in Blue/white or Brown/white wire

• Short circuit in Brown/black or Blue/ black wire

 

NO – GO TO STEP 3.

 

IACV Open Circuit Inspection

Check for continuity between the ECM 33P (Black) connector [1] and IACV 4P (Black) connector [2] of the wire side.

Connection: Brown/white – Brown/white Blue/white – Blue/white Brown/black – Brown/black Blue/black – Blue/black

 

TOOL:
Test probe	07ZAJ-RDJA110
Is there continuity?
YES	–Replace the ECM with a known good one,
	and recheck.
NO	–• Open circuit	in Blue/white or Brown/
	white wire

• Open circuit in Brown/black or Blue/ black wire

 

 

A D

 

 

B C

 

[1]

 

[1]

 

 

Bu/W Br/W Br/Bl Bu/Bl

 

 

			[2]
		Bu/W
		Bu/Bl
Bu/W	Br/W	Br/W
		Br/Bl

 

Br/Bl

 

 

Bu/Bl

 

[1]

 

4-40

PGM-FI SYSTEM

MIL 54 BLINKS (BANK ANGLE

SENSOR)

Before starting the inspection, check for loose or poor contact on the bank angle sensor 2P connector and recheck the MIL blinking.

 

ECM

From ENGINE

 

STOP SWITCH

 

 

Bl/Bu

 

R/Bu

 

BANK ANGLE SENSOR

 

Probable cause

• Open circuit in Black/blue wire between the engine stop switch and bank angle sensor

• Open or short circuit in Red/blue wire between the bank angle sensor and ECM

 

• Faulty bank angle sensor

• Faulty ECM

 

Bank Angle Sensor Input Voltage Inspection

 

Turn the ignition switch OFF.
	[1]
Disconnect the bank angle sensor 2P connector [1]
(page 4-48).
Turn the ignition switch ON and engine stop switch
" ".		Bl/Bu
Measure the voltage between the bank angle
sensor 2P connector of the wire side and ground.
Connection: Black/blue (+) – Ground (–)
Standard: Battery voltage
Is there battery voltage?
YES	–GO TO STEP 2.
NO	–Open circuit in Black/blue wire

 

4-41

PGM-FI SYSTEM

Bank Angle Sensor Signal Line Short Circuit

 

Inspection
Turn the ignition switch OFF.
	[1]
Disconnect the ECM 33P (Black) connector (page
4-50).
Check for continuity between the bank angle sensor
2P connector [1] of the wire side and ground.
Connection: Red/blue – Ground	R/Bu
Is there continuity?
YES	–Short circuit in Red/blue wire
NO	–GO TO STEP 3.