Yamaha FJR1300R Service Manual page 477

Code No. 42
Used diagnostic code No. 07 (speed sensor)
No. 21 (neutral switch)
Inspection operation item and probable cause Operation item and countermeasure
1 Defective speed sensor
1 Open or short circuit in lead wire.
1 Gear for detecting vehicle speed has bro-
ken.
1 Connected state of connector
Inspect the coupler for any pins that may
have pulled out.
Check the locking condition of the coupler.
2 Defective neutral switch
2 Faulty shift drum
(neutral detection area)
2 Open or short circuit in lead wire
2 Connected state of connector
Inspect the coupler for any pins that may
have pulled out.
Check the locking condition of the coupler.
Code No. 43
Used diagnostic code No. 50 (fuel injection system relay)
Inspection operation item and probable cause Operation item and countermeasure
Malfunction in ECU
Open or short circuit in the wiring harness.
Malfunction or open circuit in fuel injection sys-
tem relay
Connected state of connector
Inspect the coupler for any pins that may
have pulled out.
Check the locking condition of the coupler.
FUEL INJECTION SYSTEM
Symptom 1 No normal signals are received from the speed sensor.
2 Open or short circuit is detected in the neutral switch.
Replace if defective.
Refer to "FUEL INJECTION SYSTEM" in
chapter 8.
Repair or replace if there is an open or short
circuit.
Main wiring harness
Blue - Blue
White/Yellow - White/Yellow
Black/Blue - Black/Blue
Replace if defective.
Refer to "TRANSMISSION" in chapter 5.
If there is a malfunction, repair it and connect it
securely.
Speed sensor coupler
Main wiring harness ECU coupler
Replace if defective.
Refer to "CHECKING THE SWITCHES" in
chapter 8.
Replace if defective.
Refer to "TRANSMISSION" in chapter 5.
Repair or replace if there is an open or short
circuit.
Main wiring harness
Sky blue/Sky blue
If there is a malfunction, repair it and connect it
securely.
Neutral switch coupler
Main wiring harness ECU coupler
Symptom The ECU is unable to monitor the battery voltage.
Fuel injection system relay is on.
Repair or replace if there is an open or short
circuit.
Main wiring harness
Red - Red
Red/Black - Red/Black
Red/Blue - Red/Blue
Blue/Yellow - Blue/Yellow
Replace if defective.
Refer to "FUEL INJECTION SYSTEM" in
chapter 8.
If there is no malfunction with the fuel injection
system relay, replace the ECU.
If there is a malfunction, repair it and connect it
securely.
Fuel injection system relay coupler
ECU coupler
7 - 26
FI
Reinstatement
method
Reinstated by
starting the engine,
and inputting the
vehicle speed sig-
nals by operating
the motorcycle at a
low speed of 20 to
30 km/h.
Reinstatement
method
Reinstated by
starting the engine
and operating it at
idle.