Yamaha R1 Series 2015, Service Manual

Page: 599 / 704

IMMOBILIZER SYSTEM
8-118
Immobilizer system indicator light fault code indication
Digit of 10 : Cycles of 1 sec. ON and 1.5 sec. OFF.
Digit of 1 : Cycles of 0.5 sec. ON and 0.5 sec. OFF.
Example: fault code 52
53 IMMOBILIZER
UNIT
Codes cannot be
transmitted between
the ECU and the
immobilizer unit.
Noise interference or dis-
connected lead/cable.
1. Interference due to
radio wave noise.
2. Disconnected commu-
nication harness.
3. Immobilizer unit mal-
function.
4. ECU malfunction.
1. Check the wire
harness and con-
nector.
2. Replace the main
switch/immobi-
lizer unit.
3. Replace the ECU.
Refer to
“REPLACING
THE ECU (Engine
Control Unit)” on
page 8-180.
54 IMMOBILIZER
UNIT
Codes transmitted
between the ECU and
the immobilizer unit do
not match.
Noise interference or dis-
connected lead/cable.
1. Interference due to
radio wave noise.
2. Disconnected commu-
nication harness.
3. Immobilizer unit mal-
function.
4. ECU failure.
(The ECU or immobi-
lizer unit was replaced
with a used unit from
another vehicle.)
1. Register the code
re-registering key.
2. Check the wire
harness and con-
nector.
3. Replace the main
switch/immobi-
lizer unit.
4. Replace the ECU.
Refer to
“REPLACING
THE ECU (Engine
Control Unit)” on
page 8-180.
55 IMMOBILIZER
UNIT
Key code registration
malfunction.
Same standard key was
attempted to be registered
two consecutive times.
Register another
standard key.
56 ECU Unidentified code is
received.
Noise interference or dis-
connected lead/cable.
1. Check the wire
harness and con-
nector.
2. Replace the main
switch/immobi-
lizer unit.
3. Replace the ECU.
Refer to
“REPLACING
THE ECU (Engine
Control Unit)” on
page 8-180.
Fault
code
Part Symptom Cause Action
a. Light on
b. Light off