Yamaha YZFR1W 2007, Service Manual

Page: 394 / 429

IMMOBILIZER SYSTEM
8-75
NG
→
OK
↓
EAS27721
SELF-DIAGNOSIS FAULT CODE INDICATION
When a system failure occurs, the error code number is indicated in the LCD display of meter and
the immobilizer system indicator light blinks at the same time. The pattern of blinking also shows the
error code.
4 Check the entire immobilizer sys-
tem wiring.
Refer to "IMMOBILIZER SYSTEM"
on page 8-69. Properly connect or repair the immobi-
lizer system wiring.
• Check the condition of the each
immobilizer system circuits.
• Refer to "SELF-DIAGNOSIS FAULT
CODE INDICATION" on page 8-75.
Fault
code
Part Symptom Cause Action
51 IMMOBILIZER
UNIT Code cannot be
transmitted between
the key and immobi-
lizer unit. 1 Radio wave interfer-
ence caused by
objects around the
keys and antennas.
2 Immobilizer unit mal-
function.
3 Key malfunction.
1 Keep magnets,
metal objects, and
other immobilizer
system keys away
form the keys and
antennas.
2 Replace the main
switch/immobi-
lizer unit.
3 Replace the key.
52 IMMOBILIZER
UNIT Codes between the
key and immobilizer
unit do not match. 1 Signal received from
other transponder
(failed to recognize
code after ten consec-
utive attempts).
2 Signal received from
unregistered standard
key.
1 Place the immobi-
lizer unit at least
50 mm away from
the transponder of
other vehicles.
2 Register the stan-
dard key.
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.