Yamaha Fz 09 2014 Manual

							FUEL INJECTION  SYSTEM 
Fault code No. 30 
Item 
Latch up detected. 
Fail -safe system U nab le t o  start  engine 
Unab le t o drive vehic le 
Diagnostic code No. 08 
Me ter display Lea n ang le senso r outpu t voltage 
•  0. 4-1 
.4 (u pright) 
• 3.7-4.4  (overtur

ned) 
Procedure Remove  the lean  ang le senso r and incline i t  more than  65 
d eg rees. 
Item  Probable cause of Maintenance job Confirmation of service 
malfunction and check completion 
1 The vehic le has  over tur ned.  Raise  the vehic le upr ight.  Turn the main  sw itc h  to  ON, 
th en  to O FF, an d then  back 
t o 
 ON . 
Fault code  number  is  no t  dis-
p layed --+ Serv ice  is  fin is h ed. 
Fault code  numbe r is  di s-
p layed --+ Go  to  it em  2. 
2 
Ins ta lled cond iti o n of lea n Check  the in st alled dir ect io n  Turn  the main  switch  to ON, 
angle sen sor.  and condition  of  the  sensor.  th e n  to OFP, and  then  back 
t o 
 O N. 
Fault code  numbe r is  no t dis -
p layed --+ Serv ice  is  fi n is h ed. 
F au lt code  numbe r 

is d is -
p layed --+ Go  to item 3. 
3  Defec tive lean  angle senso r.  Execute  the diagnost ic  Turn the main  switch  to ON , 
mode.  (Code  No. 08) then  to OFP, an d then  back 
Rep lace if  defect ive.  to  O N. 
Re fe r  to CHECK ING THE Fault code  num be r  is  not  dis -
LEA N ANGLE 
SENSOR  on played --+ Serv ice  is  fin is h ed. 
page 
8 -101. Fault code  number  is  dis-
p layed --+ Go  to item  4. 
4 
Malfunction i n ECU.  Replace th e ECU. 
Re fe r  to REPLACING THE 
E C U (eng ine co ntr ol u nit)  on 
page  8-93. 
F ault code No.  33 
It em  Cylinder-#1 ignition coil: open or short circuit detected in the 
primary lead of the cylinder-#
1 ignition coil. 
Fail -safe 
system Ab le to  start  eng ine  (d epend in g  on  the number of fa ult y cy li nders) 
A ble 
t o  drive vehicle (depending  on the  numbe r of faulty  cy linders) 
Diagnostic code No. 30 
8-56  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 33 
Item Cylinde r-#1 ignition coil: open or short circuit detected in the 
primary lead of the cyllnder-#1 Ig nition coll. 
Actuation Actua tes  the  cyli nder -# 1  ignit ion coi l five times  at  one -seco nd 
in terva ls. 
I lluminates 
th e  engi ne tro uble warning li g ht. 
P rocedure C hec k that  a spark  is  generated  five times. 
• Co nnec t an  ign ition  ch ecker. 
Item  Probable cau se of Maintenance job Confirmation of service 
malfunction and check completion 
1  Connec tio n of cy li nder -# 1  Improperly connec ted -t S tart the  engine  and let it id le 
i gnit ion coil  coup ler. Connect  the co up ler  securely for approximately 5 seconds. 
Check the 

l oc king 
c ond iti o n  or replace the  wir e  harness. F au lt code  numbe r 

is 
not  dis-
o f  the 
co up ler .  played -t Serv ice i s  fin is h ed. 
D isconnect  the 
coup ler and Fau lt code  number  is  dis-
c h ec k the  pi
ns (be nt or b ro -p layed -t Go to  item 2. 
ke n term ina ls a nd lock ing 
condit ion  of the  pins). 
2  Co
nnec tio n 
of w ir e  ha rness Improperly co nnec ted -t S tart the  engine  and let it id le 
ECU  coupler. 
Co nnect  the co up ler  securely for approximately 5 seconds. 
Check the 

locking 
c ond iti o n  or replace the  wir e  harness. F au lt code  numbe r 

is 
not  dis -
o f  the 
co up ler .  played -t Serv ice i s  fi n is h ed. 
D isconnect  the 
coup ler and Fau lt code  number  is  dis-
c h ec k the  pi
ns (be nt or b ro -p layed -t Go to  item 3. 
ke n term ina ls a nd lock ing 
condit ion  of the  pins ). 
3  W
ir e  ha rness  contin u i
ty. Ope n or  sh o rt  circ uit -t S tart the  engine  and let it id le 
Rep lace 
the  wire  harness.  for approximately 5 seconds. 
Be twee n 
cyli n de r-#1 ign ition Fau lt code  numbe r  is  not  dis -
co il  coupler a nd ECU cou -played -t Serv ice i s  fin is h ed. 
p ier. 
Fau lt code  number  is  dis-
ora nge-orange 
p layed -t Go to  item  4. 
4 
Installed co nd ition  of cyl in- Improper ly  installed i gn it ion Start th e 

e n gin e and 
let it id le 
der -#1 ig n ition co il.  coil -t Re in sta ll or rep lace f o r app rox imately 5  seco nds. 
Check for looseness or the  ignit ion coil. Fau lt code  numbe r is  no t dis -
pinch ing. 
p layed -t Serv ice i s  fi n is h ed . 
Fau lt code  numbe r 

is d is -
p layed -t Go to  item 5. 
5  Defective cylinder-#1 i g n ition  Measure  the primary co il  Start the  engine  and let it id le 
co il. 
res ista nce of the cy li nde r-#1 fo r  app rox imately 5  seconds. 
i gn it ion 
co il. Fau lt code  number  is  no t  dis -
Rep lace if out of specifica -played -t Serv ice i s  fin is h ed. 
l ion. 
F au lt code  numbe r 

is d is -
Re f
er to CHECK ING T HE played -t Go to  item 6. 
IGNITIO N COILS  on page 
8-100 . 
8-57  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 33 
It em  Cylind
er-#1 ignition coil: open or short circuit detected in the 
primary lead of the cyllnder-#1 Ig nition coll. 
6 Malfunc tio n in ECU. Execute  the diagnos tic 
mode.  (Code No. 30) 
No  spark 
~ Replace the 
ECU. 
Refer to REPLACING THE 
ECU (eng ine co ntrol unit)  on 
page  8-93. 
Fault code No. 34 
It em  Cylind
er-#2 ignition coil: open or short circuit detected in the 
primary lead of the cylinder-# 2 ignition coil. 
Fail -safe 
system Ab le to  start  eng ine  (dependi ng  on  the number of fa ult y cy li nders) 
Ab le to  drive vehicle (depending  on the  number of faulty cy li nders) 
Diagnostic code No. 31 
Actu ation  Actua
tes  the cyli nder-#2  ignit ion coi l five  times  at  one-seco nd 
in tervals. 
I lluminates 
th e  eng in e trouble warning li g ht. 
Procedure Chec k that  a spa rk is  genera ted  five  times. 
• Connect  an ignition  ch ec ker. 
Item  Probable cause of Maintenance job Confirmation of service 
malfunction and check completion 
1 Connec tio n of cy li nder-#2 Improperly co nnec ted ~ S tart the  engine  and let it id le 
ignit ion co il  coup le r. Co nnect  the coup ler  securely fo r approximately 5  seconds. 
Check  the 
locking cond iti o n or replace the  wir e  harness. Fault code  numbe r  is not  dis -
o f  the 
co up ler . played~ Serv ice i s  fi n is h ed. 
D isconnect  the 
couple r and Fault code  number  is  dis -
c h eck  the pi
ns (be nt or b ro -p layed ~ Go  to item  2. 
k e n 
te r

m ina ls 
a nd lock ing 
condit ion of the  pin s). 
2  Connec tion 
of wir e  ha rness Improperly co nnec ted ~ S tart the  engine  and let it id le 
ECU co up ler. Co nnect  the coup le r securely fo r approximately 5  seconds. 
C heck  the 
locking cond itio n or replace the  wire  harness. Fault code  number  is  no t  dis-
o f  the 
co up ler .  p
layed ~ Serv ice i s  fin is h ed. 
D isconnect  the 
couple r and Fault code  number  is  dis -
c h ec k the  pi
ns (bent or bro-p layed ~ Go  to it em  3. 
k e n 
termina ls a nd locking 
condit ion of the  pins). 
3  Wir e  ha rness  contin u i
ty. Ope n or  sh o rt  circ uit ~ S tart the  engine  and let it id le 
Rep lace 
the  wire  ha r

ness.  fo r 
app rox imately 5  seco nds. 
Between cylinder -#2 ignitio n Fault code  number  is  no t  dis-
co il  coup ler and E CU co u-p layed ~ Serv ice i s  fin is h ed. 
p i
er. Fau lt code  numbe r is  dis -
gray/red-gray/red 
p layed ~ Go  to  it em  4. 
8-58  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 
34 
Item  Cy
linder-#2 ignition coil: open or short ci rcuit detected in the 
primary lead of the cyllnder-#2 Ignition coll. 
4 Ins tall ed con dition  of cylin - Imp roper ly  installed i gn ition Sta rt the  en gin e a nd let it id le 
der -#2 ignition coil.  coil -) R einstall or r ep lace f o r app roximately 5  seco nds. 
Che ck  for looseness or the  ignition coil. Fau lt code  numbe r  is not  dis-
p inc hing . 
p layed -) Service i s f in is h e d. 
Fau lt code  numbe r is  di s-
p layed -) Go  to item  5. 
5  De
fec
tive cyl ind er-#2 ign ition  Measu re  th e pr imary co il  Start the  engine  and let it id le 
coil. 
r es ista nce of the cyl in d er-#2 fo r approximately 5  sec onds. 
ig nition coil. Fault c ode  numb er  is not dis-
Rep lace if  out of specifica -played -) Serv ice i s  fi n is h ed. 
l ion . 
Fau lt code  numbe r  is 

dis-
Re fe r  to 
 C H ECK ING T H E played -) G o  to  ite m 6. 
IGNITIO N COILS on  page 
8-100. 
6  Malfunctio
n  in ECU. Execute  the diagnos tic 
mode.  (Code No. 31) 
No  sp ark 
-) R epla ce the 
ECU. 
Refer to REPLACI NG THE 
EC U (engine contr ol u nit)  on 
page  8
-93. 
Fault code No.  35 
Item  Cy
linder-#3 ignition coil: open or short ci rcuit detected in the 
primary lead of the cyllnder-#3 Ignition coll. 
Fail -safe 
system Ab le to  star t eng in e  (dependi ng  on  the number of fau lty c ylind ers ) 
A ble t o 

d rive 
vehicle (d epen ding  on the  number of fau lty c ylinders) 
Diagnostic code No.  32 
Actuation Actua tes  the  cylinder-#3  ig nition coil five  time s at  one- sec on d 
in tervals. 
I lluminates 
th e  engi ne tro ub le warning li g ht. 
Procedure Chec k that  a spar k is  genera ted  five  times. 
• Conne ct an  ign ition  ch ec ke r. 
Item  Probable cause of Maintenance job Confirmation of service 
malfunction and check completion 
1 Conn ect ion of c ylind er-#3 Im prop erly co nne cted -) Sta rt the  engin e  and le t it id le 
ignit ion co il  coup le r. Con nec t the coupler  securely fo r approximately 5  seco nds. 
C he ck  the 
loc kin g con dition  or re p la ce the  wire  ha rne ss. Fault code  numb er  is not dis-
o f  the 
co upler. played -) Service i s  fin ished. 
D iscon nec t the 
coupler and Fault code  number  is  dis-
chec k t he  pins (be nt or b ro-p layed -) G o  to  ite m 2. 
ke n te rm ina ls an d lockin g 
condition of the  pins). 
8-59  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 35 
Item  Cy
linder-#3 ignition coil: open or short ci rcuit detected in the 
primary lead of the cyllnder-#3 Ignition coll. 
2  Connect
ion of wire  harness Improper ly connected -t Start the  engine  and let it id le 
ECU  coupler. 
Connect  the coupler securely for approximately 5 seco nds. 
Check  the 

locking 
co ndi tion or replace the  wire  harness. Fau lt code  number is not  dis-
of the co upl er.  p
layed -t Serv ice i s  fin is h ed. 
D isconnect  the 
coupler and Fault code  numbe r is  dis-
check  the pi
ns (be nt or bro-p layed -t Go to  item  3. 
ken  termina ls  and 
locking 
condit ion of the  pins). 
3  Wire ha rness  contin u i
ty. Open or sh o rt  circu it -t Start the  engine  and let it id le 
Rep lace 
the  wire  harness.  for approximately 5 seco nds. 
Be twee n cyli nder -#3  ignition 
Fault code  number is not  dis-
co il  coup ler and ECU co u-p layed -t Serv ice i s  fin is h ed. 
pier. 
Fau lt code  numbe r is  dis-
orange/gree n
-orange/gree n played -t Go to  item 4. 
4 Installed condit ion of cylin - Improper ly  installed i gn ition Start the  engine  and let it id le 
der-#3  ignition coil.  coil -> Re install or rep lace for approximately 5  seconds. 
Check  for looseness  or the ignit ion 
coil. Fault code  number  is not dis-
pinch ing. 
p layed -t Serv ice i s  fi n ished. 
Fau lt code  numbe r is  dis-
p layed -t Go to  item 5. 
5  Defect
ive cylinder-#3  ignition  Measure  the  primary co il  Start the engine  and let it idle 
co il. 
resistance of the cy li nde r-#3 for approx imately 5 seco nds. 
igni tion coil. Fau lt code  number is  no t dis-
Rep lace if 

out 
of specifica-p layed -> Service i s  fin ished. 
t io
n. Fault code  number  is dis-
Re f
er to CHECK ING T HE played -t Go to  item 6. 
IGNITION  COILS on page 
8-100. 
6  Malfunct
ion  in ECU. Execute  the diagnostic 
mode. 
(Code  No. 32) 
No spark -t Replace the 
ECU . 
Refe r  to R EPLACING THE 
ECU (en gine con tro l unit)  on 
page  8-93. 
Fault code No. 39 
Item  Injector: open or short circuit detected. 
Fail-safe system Able to  start  eng ine  (depend in g on the  number of fau lty cy linder s) 
Able to  drive vehicle (depending on the  number of fau lty cy linders) 
Diagnostic code No. 36,37,38 
36 Actuation Actuates  injec tor #1 five  times at one-second int ervals. 
I lluminates 
the  engine trouble warning li ght. 
Procedure Check  that in je ctor #1 is  ac tua ted  five  times  by listening for  the 
operating  sound. 
8-60  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 39 
Item Injector: open or short circuit detected. 
37 
Actuation Actua tes  injec tor #2 five times at one-second int ervals. 
I lluminates 
th e  engi ne tro ub le warning li g ht. 
Procedure Chec k that in jec tor #2  is  ac tua ted five times  by listening for  the 
ope rating  sound. 
38 
Actuation Actuates  in jector  #3 five times at one-second intervals. 
I lluminates 
th e  engi ne tro ub le warning li g ht. 
Procedure Check  that injector  #3 is  actuated five times  by listening tor  the 
ope rating  sound. 
Item Probable cau se of Maintenance job Confirmation of service 
malfunction and ch eck completion 
1 Ident ify th e malfunct ion ing Execute  the diagnost ic -
in jec tor .  mode. (Code Nos. 36, 37, 
38) 
Ident ify the  in jector  that does 
n
ot p rod uce an opera ting 
sound. 
Perform th e following  proce· 
dures  for  the  defect ive  injec-
tor . 
Re f
er to CHECK ING THE 
FUEL  INJECTORS on  page 
8· 1 11 . 
2  Connect io n 
of in je ctor  #1, #2, Improperly connec ted ~ Execu te  th e  diag nost ic 
and/or  injector #3 
coupler. Con nec t the coupler  securely mode.  (Code Nos. 36, 37, 
Check  the 
loc king 
condit ion  or replace the wire  harness. 
38) 
of the coup ler. N o  ope rating  sound ~ Go to 
D iscon nec t the 
coupler and  item 3. 
c h eck  the pi
ns (bent or b ro · Operat ing sound ~ Go to 
ke n te rm ina ls a nd lock ing ite m  7. 
condi tio n 
of the pins) . 
3 
Detec tive in jec tor #1, #2,  Measure  the injector res is · Execu te  the  diag nost ic 
and/or  injector #3 . 
lance .  mode. (C ode  Nos. 36, 37, 
Replace if 

out 
of specifica -
38) 
l i
on. No ope rating  sound ~ Go to 
Re fe r  to 
C HECK ING T HE  item 4. 
FUEL  INJECTORS on page  Operating sound ~ Go to 
8 · 111.  item  7. 
4  Connec
tion of wire harness Improper ly connec ted ~ Execute  the diagnost ic 
ECU  coupler. Connect  the coupler securely mode. (Code  Nos. 36, 37, 
Check  the 
l oc king 
c ondi tio n  or replace the  wire  harness.  38) 
of the coup ler. No operating  sound ~ Go to 
D isconnect  the 
coupler and  item  5. 
c h ec k the  pi
ns (be nt or b ro· Operating  sound ~ Go to 
ken 
term ina ls and lock ing item 7. 
condit ion of the  pins). 
8-61  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 39 
Item Injector: open or short circuit detected. 
5  Wir e  harness  continui ty. 
Open or short  circuit ~ Execute  the  diag nostic 
Rep lace the  wire  harness.  mode. (Code  Nos. 36, 37, 
Between i njecto r 
coupler and 
38) 
ECU coupler. No operat ing  sound ~ Go to 
Injecto r #1 item 6. 
red /b lack-red/b lack Operat ing sound ~ Go to 
Injecto r #2  item 7. 
green/b lack-gree n/b lack 
Injector 
#3 
b lue/b lack -blue /b lack 
Between i nje ctor coup ler and 
relay unit co upl er. 
r ed/blue -re d/blue 
6 Malfunction in ECU.  Replace the ECU. 
Re fer to REPLACING THE 
EC U (eng ine co ntrol unit)  on 
page  8-93. 
7 
Delete t he fault code. Start the  engine  and let it idl e 
fo r approximately 5  seconds. 
Check  that the 
fault code 
n umb
er is  not disp layed. 
Fault code No. 41 
Item Lean angle sensor: open or short circuit detected. 
Fail-safe system Unable to  start  engine 
Unable to drive vehicle 
Diagnostic code No. 08 
Meter display Lean ang le sensor  output volt age 
• 
0.4-1.4  (upright) 
• 3.7-4.4  (overturned) 
Procedure R emove  the lean  ang le sensor  and incline i t  more  than 65 
degrees. 
Item Probable cause of Maintenance job Confirmation of service 
malfunction and check completion 
1  Connect ion of lean  angle  Improperly connected ~ Turn the main  switch  to ON, 
sensor coupler . Connect  the coupler  securely then to OFP, and then  back 
Check  the 
lock ing 
c ondi tion  or replace the  wir e  ha rness.  to  ON . 
of the coupler .  Fault code numbe r is  no t dis-
D iscon nect  the 
coupler and played ~ Serv ice i s  fin is h ed. 
check  the pins  (bent 
or bro -Fau lt code  numbe r  is  dis -
ken 
ter minals and lock ing  played ~ Go to  item 2. 
condit ion of the  pins). 
8-62  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 
41 
Item Lean angle sensor: open or short circuit de tected. 
2 Connecti o n of w ir e  harness Improperly connected ~ Turn the main switch  to ON, 
ECU cou p ler. Connect the coupler secure ly th en  to OFP, and then back 
Check th e locking cond it ion or replace th e  wire har ness. to ON. 
of the cou pler.  Fault code number is not dis · 
D is c on nect the coupler and played ~ Service i s  fin is h ed. 
c h eck  the pi
ns (bent or bro -Fau lt code number is  d is -
ke n 
terminals a nd l ocking played ~ Go to  item 3. 
cond iti o n 
of the pins) . 
3  W ir e  h
arness contin u ity . Open or  short  circ uit ~ Turn the main switch  to ON, 
Replace the wire h a rness.  then  to OFF, and then back 
Between lean angle sensor to ON. 
couple r and ECU coupler .  Fault code number is not dis -
yello w/green-yellow/g reen 
played ~ Service i s  fin is h ed. 
Between 
l ean angle sensor Fau lt code  number is  d is -
couple r and  jo in t connector. p layed ~ Go to  item 4. 
blue-blue 
black/b lue-black/b lu e 
Between  jo int connector and 
ECU coupler. 
b l
ue-blue 
black/blue -black/b lu e 
4  Defective lean angle sensor.  Execute the diagnostic  Turn the main switch t o ON, 
mode. (Code No. 08) t h en  to OFP, and then back 
Replace if  defe ctive. 
to ON. 
Refer to CHECKING THE Fau lt code  number is not  d is-
LEAN ANGLE SENSOR on played ~ Service i s  f in is h ed. 
page 
8 -101.  Fau lt code number is  d is-
p layed ~ Go to  item 5. 
5 
Malfuncti o n in E CU. Replace the ECU. 
Refe r  to REPLACING THE 
ECU (eng ine control unit)  on 
page  8-93. 
Fault code No. 42 
A Speed sensor: no normal signals are received from the 
speed sensor. 
I t e m B Neutra l switch: open  or short circuit is  detected. 
c Clutch switch:  open  or short  cir c uit  is detect ed . 
Fail-safe system Able to  start e ng ine 
Able to  drive vehicle 
Diagnostic code No. 07 
Mete r display Ve hicle speed pulse 
0 -
999 
8-63  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 42 
A Speed sensor: no normal signals are received from the 
speed sensor. 
Item B Neutral switch:  open or sho rt  circuit  is  detected. 
c Clutch sw itch:  open or short  circ uit  is  detec ted. 
Procedure Check  that the numbe r increase s when  the  rear whee l is  rotated. 
T he n umber 
is cumu lative and  does  not reset  each time  the whee l 
is 

s topped . 
Item Probable cause of Maintenance job Confirmation of service 
malfunction and check completion 
1  Locate  the malfunction. Execute  the diagnost ic V alue does  not inc rease 4 
mode. (Code No. 07) Go to  item  2. 
Ro tate  the rear 
wheel by 
h a nd  and  chec k 
t
hat  the  indi-
cated 
va lu e increases. 
Execute  the diagnos tic 
I

ncorrec t 
indicatio n 4 Go to 
mode. 
(Code  No.  21)  item 2  in  sect ion  B for  the 
When  the transm issio n is  in 
n e utr al sw itch. 
neu tral:  ON  
When  the transmission  is  in 
gea r with  the 
clut ch  lever 
re leased:  OFF 
When  the transmiss ion  is in In corr ect indication 4 Go to 
gear  with the 
clutc h lever item  2 in  section C fo r the 
squeezed  and the sidestand 
clutch sw itch. 
retracted : 
ON  
2  Connect ion of speed  sensor Imprope rly connec ted 4 Execute  the diag nostic 
co upler. Co nn ec t the co up ler  sec urely mode. (Code No. 07) 
C hec k th e locking co ndit ion or replace th e wire  harness.  Rotate  the rear whee l by 
o f the 
co upl er. hand  and check  that the  in di-
D isc onnec t the 
co up ler and  cate d value incr eases. 
c h eck  the pi
ns (be nt or bro -Value increases 4 Go  to 
ken 
t e rm inals a nd lock ing it em  6 and de le te the fa ult 
co nd ition of t h e  pin s) .  code. 
Value does not inc rease 4 
Go to  item  3. 
3  Connect
ion 
of w ire  harness Improper ly connected 4 Execu te  the diag nost ic 
ECU  coupl er. Connect  the coup ler secu rely mode . (Code  No. 07) 
Che ck  the 

locking 
co ndition  or re plac e the wir e  ha rness.  R
otate  the rear whee l by 
o f  the 
coup ler. h a nd  and  check  that  th e in di-
D iscon nect  the coup ler and  cated value incr eases. 
ch eck the  pi
ns (bent or bro-Val ue increase s 4 Go to 
ken 
termina ls and loc kin g item  6 

a nd 
de lete the f au lt 
condi tion of th e pin s).  code. 
Value does  not  inc rease 4 
Go to  item  4. 
8-64  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 42 
A Speed sensor: no normal signals are received from the 
speed sensor. 
Item B Neutral switch:  open or sho rt  circuit 

is  detected. 
c Clutch sw itch:  open or short  circuit is  detected. 
4 Wire  harness  continu ity. Open or short circu it -> Execu te  the diag nost ic 
Rep lace the  wire  harness.  mode. (Code  No. 07) 
Between  speed sensor  cou-
Rotate  the rear whee l by 
p ie r and 
ECU  coupl er. hand  and  check  that the  in di-
white/yel low-white/yel low cated value incre ases . 
Between  speed sensor  cou-
Value increases -> Go  to 
p ier  and 
joint  connector.  item  6 a nd de lete the fau lt 
b l
ue-blue code . 
black/blue-black/bl ue 
Value does not inc rease -> 
Be tween  joint connector  and Go to item  5. 
ECU  coupler. 
b l
ue-blue 
b lack/blue -b
lack/bl ue 
5 Malfunct io n in ECU.  Replace the ECU. Go to  item  6 and delete the 
Re f
er to REPLACI NG THE fa ult code . 
ECU (engine contro l unit)  on 
page 
8·93 . 
6 Delete the fault code.  Turn the main  switch  to ON, 
and  then  rotate  th e rea r 
whee l by hand. 
Start the  engine , and  inpu t 
th e 
vehicle speed signals by 
operating  the 
vehicle at 20 to 
30 km /h (19 mi/h). 
T he 
fau lt code  can also be 
deleted by activating  the 
diag nostic  mode and 
select-
ing  diagnos tic code  number 
63. 
Fault code No. 42 
A Speed senso r: no norma l signals are  rece ived from the  speed 
sensor. 
I tem 
B Neutral switch: open o r short circuit is detected. 
c Clutch sw itch:  open or short  circuit is  detected. 
Fail -safe system Able to  start  eng ine 
Able to  drive vehicle 
Diagnostic code No. 21 
8-65