Yamaha FJR1300A(D) - Page 520

FUEL INJECTION SYSTEM
8-71
4 Connection of wire harness
ECU coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
Improperly connected →
Connect the coupler secure-
ly or replace the wire har-
ness.
Execute the diagnostic
mode. (Code No. 21)
When the clutch lever is re-
leased: “OFF”
When the clutch lever is
squeezed: “ON”
Correct indication→ Go to
item 9.
Incorrect indication → Go to
item 5.
5 Wire harness continuity. Open or short circuit → Re-
place the wire harness.
Between ECU coupler and
joint coupler.
black/yellow–black/yellow
Between joint coupler and
clutch switch coupler.
black/yellow–black/yellow
Between clutch switch cou-
pler and joint coupler.
green/white–green/white
Between joint coupler and
relay unit coupler.
black/red–black/red
Execute the diagnostic
mode. (Code No. 21)
When the clutch lever is re-
leased: “OFF”
When the clutch lever is
squeezed: “ON”
Correct indication→ Go to
item 9.
Incorrect indication → Go to
item 6.
6 Defective relay unit. Check the relay unit.
Refer to “CHECKING THE
RELAY UNIT (DIODE)” on
page 8-180.
Execute the diagnostic
mode. (Code No. 21)
When the clutch lever is re-
leased: “OFF”
When the clutch lever is
squeezed: “ON”
Correct indication→ Go to
item 9.
Incorrect indication → Go to
item 7.
7 Defective clutch switch. Check the clutch switch.
Replace if defective.
Refer to “CHECKING THE
SWITCHES” on page 8-169.
Execute the diagnostic
mode. (Code No. 21)
When the clutch lever is re-
leased: “OFF”
When the clutch lever is
squeezed: “ON”
Correct indication→ Go to
item 9.
Incorrect indication → Go to
item 8.
8 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (engine control unit)” on
page 8-174.
Fault code No. 42
Item
A
Rear wheel sensor: no normal signals are received from the
rear wheel sensor.
B Neutral switch: open or short circuit is detected.
C Clutch switch: open or short circuit is detected.