Yamaha FJR1300R, Service Manual

Page: 483 / 572

7 - 32
FI
FUEL INJECTION SYSTEM
Symptom Sidestand switch does not function (the engine does not stop when the stand is extended).
Probable mal-
function area • Short circuit in the input line to ECU
• Malfunction in the starter circuit cut-off relay
Inspection method 1
Inspection by diagnosis mode
Inspection method 2
Inspection of a malfunction that cannot be identified in the
diagnosis mode, and in case the area of the malfunction has
been narrowed down in the inspection method 1 given on the
left.
• Execute diagnostic code 21
Enable the meter to display the ON/OFF states
of the sidestand switch (in gear other than neu-
tral).
* To distinguish whether the problem is in the
switch or in other areas.
• Meter does not display ON/OFF.
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
Inspect the sidestand switch.
Refer to “CHECKING THE SWITCHES” in chapter 8.
Defective: replace
Symptom Engine trouble warning light blinks while the start switch is being pressed (to warn that the engine
is unable to start).
Probable mal-
function area • Malfunction in Fuel injection system relay
• Open circuit in wiring harness
• Disconnected battery
• Defective crankshaft position sensor
• Defective sidestand switch
• Tripped lean angle cut-off switch
• Open circuit in ignition coil primary line
• ECU memory check error
Inspection method 1
Inspection by diagnosis mode
Inspection method 2
Inspection of a malfunction that cannot be identified in the
diagnosis mode, and in case the area of the malfunction has
been narrowed down in the inspection method 1.
• Execute diagnostic code 50
To trip the Fuel injection system relay.
• Execute diagnostic code 09
To check the monitor voltage.
* To distinguish whether the problem is in the
relay or in other areas.
• Fuel injection system relay does not trip.
Inspect the coil side of the fuel injection system relay.
Refer to “FUEL INJECTION SYSTEM” in chapter 8.
Defective: replace
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
• Normal voltage is not displayed.
Inspect the contact side of the fuel injection system relay.
Refer to “FUEL INJECTION SYSTEM” in chapter 8.
Defective: replace
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
• If a self-diagnostic code is displayed:
Inspect the battery.
Defective: replace or recharge
Inspect and repair the applicable area of the malfunction.