Yamaha FJR13AG Service Manual page 593

Fault code No.
Item
3 Check the main fuse and fuel in-
jection system fuse.
4 Wire harness continuity be-
tween battery and ECU coupler.
5 Wire harness continuity be-
tween main switch and ECU
coupler.
6 Malfunction in ECU.
7 Delete the fault code and check
that the engine trouble warning
light goes off.
Fault code No. P1604, P1605 (FJR13AG)
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
Procedure
Probable cause of malfunc-
Item
tion and check
P1602
Malfunction in ECU internal circuit (malfunction of ECU power cut-
off function).
Blown fuse → Replace the fuse
or wire harness.
Open or short circuit → Replace
the wire harness.
Between battery terminal and
main fuse.
red–red
Between main fuse coupler and
fuel injection system fuse.
red–red
Between fuel injection system
fuse and ECU coupler.
brown/white–brown/white
Open or short circuit → Replace
the wire harness.
Between main switch and igni-
tion fuse.
brown/blue–brown/blue
Between ignition fuse and ECU
coupler.
red/white–red/white
Replace the ECU.
Refer to "REPLACING THE
ECU (engine control unit)" on
page 8-250.
Confirm that the fault code has
a condition of "Recovered" us-
ing the Yamaha diagnostic tool,
and then delete the fault code.
P1604, P1605
[P1604] Lean angle sensor: ground short circuit detected.
[P1605] Lean angle sensor: open or power short circuit.
Unable to start engine
Unable to drive vehicle
08
Lean angle sensor output voltage
• 0.4–1.4 (upright)
• 3.7–4.4 (overturned)
Remove the lean angle sensor and incline it more than 65 degrees.
Maintenance job
8-116
FUEL INJECTION SYSTEM
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function mode of the Yamaha di-
agnostic tool.
Condition is "Recovered" → Go
to item 7 and finish the service.
Condition is "Detected" → Go to
item 4.
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function mode of the Yamaha di-
agnostic tool.
Condition is "Recovered" → Go
to item 7 and finish the service.
Condition is "Detected" → Go to
item 5.
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function mode of the Yamaha di-
agnostic tool.
Condition is "Recovered" → Go
to item 7 and finish the service.
Condition is "Detected" → Go to
item 6.
Service is finished.
Confirmation of service com-
pletion