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I+ #< D+: 03/11
%& * C7
9&' P%+
I+ M%%+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3#< "<+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3I %= I?= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4I C= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4%+< #?= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6K %=<= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
%?< . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8? I #?== . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
C<+=+ #=/$# %=< (H+ E) . . . . . . . . . . . . . . . . . . . . .10C<+=+ %=< (!55) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
' I*% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13I C= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17K C< . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18%+< #?= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
%+< #? D+== (H#I =) . . . . . . . . . . . . . . . . . . . . . . . . . . .21E =< D+== . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
%I B 12 06 10 !54 -=< F+?=, D+== I%&A . . . . . . . . . . . . . . . . . . . . . . . . . . .25%I B 12 11 10 !54, !54&, !55 -D+== < HD# H-<==?< F+?= . . . . . . . . . . . . . . . . . . . . . .33
I+ M%%+
$@= D+:
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2I ++
I+ M%%+
M: A
P9': A
After completion of this module !ou ill be able to:
'<=+ =+< = < + ?= B =
#<< + <+< = +=?<
#<< + =+< = +=?<
I<< =+< +=?<= + <+ +==
'<=+ ==
D=< == = <
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E<% * IPO * % I+ M%%+ =7
" + ?<== EC = I ++ ?= +?-+ =@<+ =. I += ? + < ++ = == <=. F< < + <+ += +== B &<+$< +?+= ? -.
P' * O%
I ++ <@= ?= +<= <?<@+ + << . B+= + ?=, EC +?+= +<= + =+< ?? @+ <?+ +@++ <+< <?=. & EC <= + <= =+<
?? ? =< D.
& EC += + @< <+ <+ . &= = == ?= + D<I %=, < == <<< += %+ I %= ($). $+ =+= <+= +@ =+<+ @?+ <?=.
& I C< = < EC (+ ). & EC +?-+ + += + + ?=:
B+< +;
A<+< #+ #=;
A< F ?;
A< &<+?<;
E C+ &<+?<;
C<+=+ #= / $#;
C+=+ #== (C< ID);
K %=<=;
*I + &?<+< , B= #<==?< = += ?=.
3I ++
I+ M%%+
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& <?+ += +< @+. <+, @+ = + EC <+= =+ < =+?<+ + . = <? + +< @+ = <, EC <+= ? +=< =+?<+ .
& Ca*'%a P+&&+*/RPM =+= EC =+< < << += += <@ <+ +? <+. &= ? = ?= + < ?= < + aa*"/"a %" &$*&&+* &)-&*$. ? = ?, EC +@+ .
C =+< = < EC += + <+?< + <?< =+< ?. A <+ @< =< + + +< , - <+ + < = <+< <@ ? =+<.
=+< + +< , < = < <=?= = +@+ .
I + + + +< <+?< = ,
+@+ <? =+<< < +.
I+ =7 I97
& == ++ == ?== =@<+ ?= < ?=. #<< < = ? ?= =? += $#,< =, <+=+ =, +< +== + <+?< (+ + + +<)+ ?< ?<+< =, + = <==?<.
= == = +@ <+ =+ < + !G6 =.&< +< = < += = + + + @<==. & =+@ < < ?<+.
I+ C7
& @+ =? <?< ?< ?= +<= =< =< < =. & =< < <?= ?<+, ?<< + <+ @+ <+=. & C <?? <+< + =+< = === :
& C A== += <= =?+ < + <. "
= <+< , < + ?<= <. & =+< = < + <+ + ?<= <.
4I ++
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& <+< <@= +< @+< I C $+ ( I) = +@+ CA% ?. & EC <-@= + <? + < <+< (C
&<+ 1) +@+ + F+ %+ <+==-<. & + ?<< =<? <+< = += =+?<+ < ? ? ++ . A< = =<+ <==, EC <<? <+< <? + +@+ F+ %+<+==<. & + ? ? <+< +== + ?= @+ =+< .
& @+ <+ =+< = =+< <? C &<+ 4 =+< ? (=?+ <).
& <+< + =+< = +< ?-?-, <<, =+< <?<= +<? =? (C &<+ 4+).
& @+ <+ =+< - = =+< <? C &<+ 4 =+< ? (=?+ <).
& <+< + =+< = +< ?-?-
, <<, =+< <?<= +<? =? (C &<+ 4+).
& EC ?== =. & @?+ = +< <+ =?+ < ().
& = +< <@ =@ + < <+< <+= <+<==, + + = = + +== ?+<=. & <+< +=+< <? < + @<=.
5I ++
Insulator Boot
Secondary
Winding
I*"3 E3(a*a&+*
1 C1 A;;*
2 I;=<: B<
3 #8: =
4 ECM F1 #< $:;1;<:5 #+: C1 G:=
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% P9+7
& =+< ?= <? < ?=+<. & @+ +<= +<== +< + =+<
? < =@ < +@ <=. &=<+= + =+< = ?= +</? ?<.
& =+< ?= +< + < ?= +<+( < +=) = = =?+ < <== +</? ?<.
& =+< ?= ?= B E= +< = !GK. & ?= ?= + I<?< <. & < < = 0.6 . & =?+< = +=<=. & =+< ? += < < =<@ + <@ =+<. & << =+< ? < + =? ?=.
& I %= = < EC @+ Ca*'%a P+&&+*/RPMS"*+. I + =< +? = <=, EC +@+ <<= ? -< < + <. E <+ = ==.
& =+< ?= < !51 + !52K# <+ =+ += !52. H@<, !54?== + =+< ? < B=. & =+< ? = === +12 <+ <+== < 14 = !52 <@= +== << =++. & =+< ? = += + 12 = <?<= + =+ . & (=) += + + = +++== +<+ !54 < +.
I9 7 % '97 % % 7 67 % % 8 7 7+% %9, %7 % 1,200> F ++ % %9 % '-9'7 ''= &.
6I ++
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K' 77
& ==< <=<= =<??<-< @<+=(). K ?= + ++
. & ++ < ==< + ==< DE ?<+=?<=. A<+,<@<<+ ?= <=== + ?< ?<<+ = < =. &= +<+?= <=== ?<+ +<= == - + << < ??+ .
%? ?= <=== +< <<< += + ?< += <=? = ?-+< ?< <+ + <. !<+ ?= +<== <? = +?= <==?< + <+?< <=, <=? =- ?-+< ?< . &= <?= + @= == 2000 /= + = ?< <+ ?= = +<. 30 /=.
C= +@< <+ ?:
I<+= <== <+ (.. ==)
H < +<
#< ? ?+ ($"!/"!)
H + +< + <+?<
& ==<= <+ < <. <+= < ?=
@= +< @< <+ =+= +< < EC. E==@@<+ += +?= EC <+< <+< += ==+<.
& ?< K ==<= @+< ; + 6 <= ?= (2), 8J= ?< (4) + 12J= = (6).
N: E<'77 '+ ; '%97 MIL 9%.
$ 7%+ ' 777, & 79 9 7'*'%." -++ ' 777 '% 79 7 97' 77 *%97 + *%'.
I* % *%9 7 ' ; 77(7), ECM %'%7 K' C % ; 7 + + % '7% &%7' 7-+ &%7 % % %9/779 % % *%9 ; &7.
7I ++
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9'+& < =?< <<= <<?+< ?= + ?<= ?<+</=?<+< =. D?< = <==, +? ?=<==?< <+== < +<. 100 +< ? +? 200 +<. &= =?+ ?
+?= < = ?= +< =? += , <=?+ += < +<+<= + << ?-+< ?< < +?+ < .
%?< + + <<= <@= ==- = <@ ++, EC <?= < ?? ==?<. &<+< =?< = +?= @?+ < +<=. F? + < = =? =< < (3 6 =) <== =?<. A <<= +? = =< +? <.
8I ++
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9I ++
M9 I+ P977? I #?== =?< =+< ?+ ?< =+< ?. & EC +@+ = 9 = (@+ ) < 720 <+=+ <@?.
& <<==@+@+ +=== ? =. A= =+<+= <, <+== +@+ = <?. = + =, ? - +@+ = <?<. &= ++=< + ++= +< ?.
& ? ?= == =?= :
E % >1350 $# (@+< <+?<)
& +@+ EC =<@= < + <+=</+< @? ?= (+<+ <?). A= < = , EC+@+= += +<+ + + + <+. & EC ?+@+ < ? < = + +? +<+ (<?).
Multipleignition
pulses fromeach coil
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10I ++
C%7%* P7/RPM 7 (H%E**')
& <+=+ = ==< <@= EC +
5 @ =?+< +@ =+. & EC +?+= = ($#) + <+=+ = < + == <+.
& ==< = =? 12 @= < <= ?== + <? < EC.
A @ =+ + + @+?+ = ?? +=< + = +<. 20 <.
& < ? = + + +=?< =+ += = <+ ? += <+ += <@?= < =?=? +=. & + = =
+== + <+=+ = < ?< 1. & DE =<= <+=+ = <= = . + =?=? =+ <= <+=+ = 6.
E+ +== = ==+< < DE + ++ + ? = <?<=. & <@+ +=?< @+= (.. H L) = << @ =+< ?= .
'%7%* 7 77 7 %7 * %%7 '%7%* 7 7*7.
I*"3 E3(a*a&+*
A Electrons
1 Hall Module
2 Lines of magnetic force
3 Permanent magnet
4 Poer suppl!
5 Hall voltage
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C$16+$7 S162 (N55)$0 =+<1 <0 ? +:;0< ;;: 1; 1<1+ < <0< <0 +:;0< ;;:;=; : <0 =<<1+ 1 ;<:<-;<8 =+<1 (M#A). $0 1 :>:; <+<11; :9=1: : <0 M#A =+<1. (M#A 1; < +=::< : 1 <0 %#.)
11I ++
I1'; E;3/$1$721
1 C+<:
2 D=;< ;
3 #;:
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12I ++
NOTES
PAGE
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13I ++
A +? =?<@ =? <= << ?= IIB < < = + +? <+< < =+< . I < = + +? <+< , =
=? ?: #< %? + (KL 15).
$==+ +<== + <+< ?= '@<=+A+< EC =.
I < = + +? =+< , = =? ?:
#<+< I.
E@+?+ %+< "== #+<=.
T%" F+((+&*$ a" E3a)(" + S"+*a4 O&((++" Pa"*(=? $+< I=<?= < +< @+<+= < +?+?<<):
&= = + <+ +< < <? + =.
!<+ C?= #<.
!<+ I + #+.
' I*%
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15I ++
! %+< + L (% C<D=+)
D@ I C.
E@+?+ I + #+= ?<%? L+= (? C<= D=+).
D@ I C.
D+ #<== = =<+ H< +I + #+ (2):
L+ ?<.
D@ F? I<.
L C<==.
A; % %7 3 97 %7 %* = ;%7 7 ?OFF@7 &* 7''+ ECM. 7 ; %; 79**' ' DM-L 7. #%+ %= & 7 (9 3 -97) '%97+ %%+ ECM * 7 7'' 9+ 7 (%'+).
R% I79'7 79 & '79 * %%O7'7' P%7 9 %97 + 77.
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16I ++
&= %+< I %=, ?=%+ & (%+< + &= C+)#90 88 6 127 050 / SWZ 12 7 050 &= <-@= + + =?<+ < IIB <+< +
=+< ++< +=.
O&7 7%*= '%9-7, + %+ 77 ; +9+!
& ?<< <? = < += ?<< <+< . = , ?<< ?= <+ @+?= ?< <==.
& = +< <:
#<+< ?<< <? .
I < +<==. %+< ?<< <? =+< ?.
%+< ?<+.
& = +< <? <:
%<-<? <+< = .
%+< ?.
L <+ < +<==.
D@ ?? =+=.
& a" *+ """:
%<+ +?= =? += = += < +<==.
%+<@< @+ <? +<+ =+< + ? <?+ <?< +?.
CATION!!!
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17I ++
I* S))a4,
I %+< I + = & H (E==@ $==+ < I):
%+< #? G+ = L+< (< < B?<).
I<< H+ $+ %+< #?.
C<== = H (C+<, .).
I<<? %+< I C< < $==@ A+< B.
I %+< I + = & L (L $==+ < I):
%+< #? G+ = & %+ (=+ I=++).
I<< H+ $+ %+< #?.
C<== = & L.
+ L+ %+< I C< < $==@ B G<?.
I+ C7
& = B = +@ <= < < < + ?<+.#+<?+< +< ?= + < ? == =?< + - = +< ?. & <==+ = +<+ = <+ <? + ?. &= ? <= = =?+ + <=? +< + =+< ? +?= + =<.
& = ?= <@ < < ? ==.
=+ = @+@ ? <= ?= +== ?= =<@.
A< <@ = ?= + <+ <@ ? < < =+<? .
I = + +@ =+?<+ ? ?= <+.
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18I ++
K' C
K C< += EC ?<<+@+ ?< + <
<+= <?. K C< = + <+?< =<+< + 35C + < = + + . &= =<+< += =+= < < + .
B+= < <<, EC -<= K %=<= +< + < + <+ () =+.
I =+ @+? = <=, EC = + <+<= (3) < + <
= <. &= <== = <+ 3 <= ? +==.& +@+ ++ <= ?= +++ + + .
I + +? = K %=<(=) < <?=, EC +@+= KC<. & = + =<@+@ += = ( <? <= +) + + +? =<. & +? I+< L ?-+ "BDII <<+ = +@.
& K %=<= =? = ?= IIB <:
F+? C=
%+?= D=+ - K C< (+@ / +@)
"== D=+ (L AC + - =)
W%"* &*a((&*$ K*+' S"*+:
D+ *+ )&3 %" (+a&+*! + E*$&*"Da)a$" &(( "(! & K %=<=?= + +<==. & K %=< =<< + = < <= 4 - 6.
D+ *+ +" &$%"* aa%&*$ b+(! -# <+ <+. &<? 20 .
D+ *+ *" &$%"* aa%&*$ b+(!A = ==< + @<+ <? +=+< =+ + .
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20I ++
% P9+7
& %+< #?= =? = < << , + + <+ + =
<@+=.$< %<@ I<+ B?=:
%I B 12 01 05 H #<<+ I<?%+< #?/%+< #? A+ C+<
%I B 12 01 99 H #<<+ #+?%+< #?/%+< #? A+ C+<< << + + @=?+ =+< ? (= = ?=-, ?, .)
& %+< #?= =? << =+ + <? ?= %+&=:
% 12 1 200 &<? L<
% 12 1 171 %+< #? %
N 97 A 7 * % 7%%.
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21I ++
% P9+ D%+77 (HPI +7)D? < =+< ? ? < , + @< ? =<+ + +?= == =+< ? ++. &= += =+< ? +== +<+ +< H#I =<@ <=. I<+ + =+< ?
+== + + == ? < +?=. %+< ? <+ <@+ += <? 45,000 = = =. & ?=<+= + ?= +=== =+< ? +==:
$0 ;8: 8= *> ;0?; : ?: 8<<:?1<0 @+;;1> +<: ?: : 1;=<:.
$0 ;8: 8= *> ;0?; : ?: 8<<:: ;8: 8= ?1<0 010 1. #8: 8= 1;= : :8+<.
$0 ;8: 8= *> ;0?; :;1 <0+<: ;1 ?01+0 += * 11+<1 = ;8: 1>:;1.
$0 ;8: 8= *> ;0?; :;1 <0+<: ;1 <0 1;=<:;. $01; += ; * 11+<1 = ;8:1>:;1.
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22I1<1 M<
E+ M7* D%+77
E =< = <=? ?= < < <=. & +?=-= E =< +< =@ ? + <? =?-===.
C=< +<= += + ++ += + I%&A = , << +? = += = + +? < += <<+.F &= ? += =+ I%&A.
IGNITION S#STEMCOMPONENT POSSIBLE CONDITION TEST CORRECTION
S$5. P/8*: B I6++< ;8 8= 6;< #+6 B ++< ;8 8=B E+< 8 +; < ;5 I6<6 B "8+ 6+;;B E+<(;) 5;;6 B #?8 ?< 6< +6B O = = ;8 8=B C5+ 6;=<6 ++
S21'$5< B '< 5;< = < ?< 6<<6. B C+ ?< 6;;, 8, 8+58: (51*, B H ;;<6+ = < +;6. B C+ ;;<6+ >=, 8+M73-$, 5225)
I*121 B #+6/5 C+=<; 86 ;<. #+6 B I6;8+< 6 8+ 6+;;C2/(6): B H=;6 ++, 5. 6 5 B #?8 ?< 6< +6
I*121 C2/ B ? ;=88, 5 +6< 6 5 B L 86, ; +66+<,& E1*1 =6 (;=6< ;6) ++=<; 58. I6<6 & +;6, +;; *+ =<H$5166 $5 4A - 86; (; +6; 6<6 =6 C211256 *+ ;< ECM 6 M97 6 6? +;).
M;=56<; B D<56 +<> +6<6,8 8+.
B A ;+6 6<6 ;+;+8 ;8 8>; >< 65<6*=< < 6<6 ;;<5; +6<6.
B F? < 8+=<6; 6 "E 12 00 I6;<=+<6; ?6 6
< 6<6 ;;<5.
B %; < ?6 ;+8 8<<6; ; =6 6<6 ;;<5
6;;.
E>=<6 ;+6 ;6 58<= < ;8.
1. N5 I6<6 < : S3$5. P/8* 6 OK 2. L? I6<6 < : G$3 722 60$// ('&79) 3. H I6<6 >< 8: G$3 722 /$5* ('&79)
NORMALCOMBSTION
PERIOD
ONG COMBSTIONPERIOD (SMALL GAP)
HORT COMBSTIONPERIOD (LARGE GAP)
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23I1<1 M<
ENGINE MECHANICAL S#STEMS
COMPONENT POSSIBLE CONDITION TEST CORRECTION
P67216, H 1 81;< +:?, :1(;) *:, I !=1< - "=0 "=- C::+< +1<1 ;R1*6, >>(;) < ;<1, >>(;) *<, 1 :;<. :9=1:.$/96, >> ;8:1(;) *:, +;0< * C1: +8:;;1 &C$06+$7: +:+, <+. ? <;<;.
H<'$8/ HA 1 *: :;<:1+< : *+. I !=1< - "=0 "=- A?; +;1:$/9 E1 1 8:;;=: *=1; =8 < ;?. 1 :;<. +01+ +-A78$72 I1707717 M6 F$8/7 - N< L1;< < HA 8<; ?0(HA): C=::< :;<. C0+ O1 :;;=: 1;1 1;1:.
HA *11/;<1+1 1 *:. C1: ? I;8+< : ;+:1.
$880 %<: >+== ; +=;1 I !=1< - "=0 "=- C::+< +1<1 ;L$6: =/$1> 8:<1 +1<1. ;;1* 1 :;<. $;< : >+== :9=1:.
=E;669 M;78 D9$721> ; 8: "81: I;<:. #I B=< +;. =C$1$6 17/$721>.
I<:8:< A. & M=<18 8<<1 >=;
FEL QALIT#, DELIER#, INjECTION & EAPORATIE S#STEMS
COMPONENT POSSIBLE CONDITION TEST CORRECTION
F8/ (48$/7<): C<1< =. C = ;;<, :8+ =.(?<:, <0: +*=;<1*).
F8/ D/9<: F= 8=8 1>: 8:;;=: ?, C0+ = D<:1 :;<:1+<1/? :=+<1,:;<:1+<1 1 = 1 < = :1 : 8:;;=: & :8+ +8< ; +;;:.:=1 ;; >>. >=. I<:8:< A1<1> M=<181+<1>
F= 1<: :;<:1+< (+). C0+ = 8<<1 >=;. L? = 1 <. 8=8 8?:
:=
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+ >> ; +;;:.
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8<<:. B+ (1:<) 1+<:(;). I;8+< 1+<:, :8+ 1 +;;:.
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1@<=: 8<<1 =<;.
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;<:><1. ?1<0 8:;;-=: <,8=: >>=+. <;<.
C0+ F:;0 A1: > $LE E36>01+; : LD/DM $L 1<: O"" >01+; : 8:8: ;;<*:<01.
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24I1<1 M<
IMPLASIBLE ECM CONTROL FNCTION ORSENSOR INPT SIGNALS
COMPONENT POSSIBLE CONDITION TEST CORRECTION
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B+ 8:;;=: <;< 8: #I B ?1<0 #8+1 $.
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;;: <0: *.;1 >1DI# 8:;<.
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- F=< 11<1; 8:1:, ;+: 1+=1 ;8: 8=;.
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- $:+ 8:<:;; ECM 8::1.
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1387.
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Page 2
ExitCreate and submit TC-Case, where applicable
Recheck fault memory after test drive; If clear, return car to customer
Any
misfire faults
stored?
Is this really the symptom
described?
Contact TC
No
Yes
Check Symptom
Return to Page 1
NoYes
Leaking
detected
In case of this leaking injector symptom, make surethat:
Check DME I-Level go to No. 4
Note: It needs elevated temperatures and high
engine loads to evaporate/burn fuel in exhaust
system
*Submit TC case for injector replacement. Determine thecylinder affected by misfire (see misfire fault code) and
Environmental conditions
Note:
If only one cylinder with misfire occurs per bank
Replace just one injector
If more than one Cylinder with misfire occurs in the same
bank Check misfire frequencys (Environmental
Conditions) Replace the injector with the highest
frequency of misfires per bank
When replacing injectors, make sure that:
Injector calibration is done (follow SIB 12 26 08)
Clear all DME adaptations
Swap ignition coil and
spark plug of misfiringcyl. with OK cylinders;
Does
misfire follow
the ignition
coil?
No
Injector Part
Number
Let engine cool down below 40°C / 100°F
Disconnect low pressure side from high
pressure side
Check EKP function:
p_fuel(LP) > 4.75bar while EKP is running; if
not: follow B1214_DI_KDR
residual pres. of >3.75bar 10min after EKP
was deactivated
Connect low pres. side and high pres.
side
Activate EKP
Check residual pressure in HP
system: read HP fuel sensor value;
>3.75bar 10min after EKP
deactivated? If yes: injectors have
no leakage.
Check okayCheck
not okay
No
Followrecommendations of
test plan“
YES
Yes
Date of
production before10/2008
No
Yes
*Submit TC case for injector replacement.
If only one misfire occurs per bank Replace
just one injector
If more than one misfire occurs in the same bank
Replace all 3 injectors of that bank;
If three or more cylinders misfire Replace all 6
injectors
Symptom is
exhaust has a „strong fuel smell“
in combination with „dense white
smoke upon warm start up“ or
„wet/fouled spark plugs“
Replace ignition coiland spark plug
accordingly
26I ++
I B 12 06 10 N54 - M7* F%97, D%+77 ; IA
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Page 5
ExitCreate and submit TC-Case, where applicable
Recheck fault memory after test drive; If clear, return car
to customer
Is this really the symptom
described?
Is 29E0, 29E1
fault code stored?
Contact TC
No
Yes
Check environmental
conditions of fault code:
Is it too Rich or too Lean?
Too Rich Too Lean
Readaptation of the DME
Test Drive is needed!
Car must be at operating temperature / warm
Drive vehicle 50-60mph with 2000-2500rpm for at least 3min (use
manual shift, if needed)Perform at least 2-3 drive cycles if possible
Let vehicle idle for about 5min
Recheck mixture adaptation values (short test GT1)
Check Fuel Quality
Check alcohol content following SIB
13 04 06; In case >15% check fuel
lines and connections for corrosion
Refuel the car with known good gas
Clear DME adaptations (doublecheck
with short test GT1)
Check Fuel Supply
Check crankcase ventilation pressure
Check fault memory (history) for anyindications of lean conditions, 29F2,
29DC, 29F1, etc.
Inspect the fuel tank for contaminationlike sand, grit, cloudy fuel, etc.; if yes
drain the fuel system and *Submit TC
case for replacement, if needed
Yes
DC_MIX_FUEL
Check Symptom
Check for possible rich conditions
Visually check monoliths (borescope
if available), whether they are
mechanically deteriorated; check
fault memory for 29F4, 29F5„catalyst conversion“
Continue following DFT – Leaking
Injector on Page 2
No
Problem not fixed
DC_MIX_RICH
Return to Page 1
DC_MIX_SUP
Check exhaust side on that bank
Smoke the exhaust system; search
for cracks/leakages and replace part
if needed Are O2 sensors torqued correctly;
*Submit TC case for replacement, if
needed
Problem fixed?
Check FASTA
data!
DC_MIX_EXH
29I ++
I B 12 06 10 N54 - M7* F%97, D%+77 ; IA
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Page 6
ExitRecheck fault memory after test drive; If clear, return car
to customer
Is this really the symptom
described?No
Yes
Check Symptom
Return to Page 1
Symptom is
„single misfire fault
code stored
in DME“
Clear all DME adaptations via
service function path!
Update DME I-Level
Up to Exx-10-03-5xx or newer
30I ++
I B 12 06 10 N54 - M7* F%97, D%+77 ; IA
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Page 7
ExitCreate and submit TC-Case, where
applicableRecheck Fault Memory after cold start;
If clear, return car to customer
In case of rough running @ cold make sure to:
Check spark plugs; are they wet or excessively sooted?
Check injector calibration values; follow SIB 12 26 08
Update DME to latest I-Level
Is this really the symptom
described?
Is the
vehicle running rough
ONLY at cold start?
Does it run smooth @
warm?
No
Are
misfire faults
set in DME?
Yes
No
Readaptation of the DME Test Drive is needed!
Car must be at operating temperature / warm
Drive vehicle 50-60mph with 2000-2500rpm for about 3min (use
manual shift, if needed)
Perform at least 2-3 drive cycles if possible
Let vehicle idle for about 5min
Let car sit over night and start the car cold!!
Check Symptom
Check environmental
conditions of misfire faults:
Is there a misfire fault with
engine temperature >50°C?
No
YesYes
Problem
fixed?
No
Yes
Continue with page 6,
following DFT – rough
running @ warm engine
Contact TC
31I ++
I B 12 06 10 N54 - M7* F%97, D%+77 ; IA
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Anyfault entries in the
EKP module?
EKP function check according toISTA EKP test modules; *submit TC
case for EKP replacement ifnecessary
Check for open electrical circuit between rail sensor and DME; *submit TCcase for rail sensor replacement if necessary;
Note: default value appears as 265bar, when sensor deffective / open circuit
0x2BF4or 0x2BF5or 0x2BF8
Check HP sensor; make sure car was sitting more then 15min;follow diagnostic request to compare LP to HP sensor values; use manual fuel pressure
gauge for LP side. Values must not differ more the +/-3 bar; replace HP sensor if necessaryImportant note: in case the HP sensor value is higher then 9bar, release the pressure byslightly loosening the connection between the injector and the rail and repeat the above
check again; in case of repeated failure *submit TC case for HP sensorreplacement
0x2BE5
or 0x2BE9or 0x2BEEor 0x2C01or 0x2BDBor 0x2BDC
or 0x2BDDor 0x2BE6or 0x2BEDor 0x2C00
Yes
No
Yes
Yes
No
Havecomponents
been
replaced?
No
0x2BD9or 0x2BDAor 0x2BF2
or 0x2BF3
EKP Module
DMEHigh Pressure
(HP) System
Yes
„long crank“ complaintwithout fault entry,
possibly with info entry 0x2BDE,0x2BEF, 0x2BF0
Check battery voltage;check starter;
check crank shaft andcamshaft sensors;
repair if needed
No Repair was needed at battery, starter, crankshaft or camshaft sensors
DC_HDP_2FBF
DC_OTHER_LC
DC_EKPM
DC_HPS_29E2
DC_HPS_29F1
DC_HDP_VCV
For Your Information
Definition of the „long crank“complaint:
the engine is cranking up to about
3-4 seconds, before it starts quickly
LP = Low Pressure SystemHP = High Pressure System
Where to find the HDP’sProduction and Serial Number
Page 1
Information:CCC message „fuel pump defective“
or engine does not run at all
0x2C3Dor 0x2C3E
or 0x2C3F
Check for open electrical circuit between HDP and DME;replace components if necessary
*Submit TC case for HDPreplacement
Yes
0x2BEC
OK
Yes
DC_HDP_HARNESS
No
No
No trouble
found
Create and Submit TC-Casewhere applicable. ReadaptDME and perform test drive
on page 1. Recheck faultmemory after test drive, if
clear, return car to customer
Fuel tanklevel at fault entry
below 5 liters?
No
Add fuel, deletefault memory
Yes
Check fault memory
No
Ignore fault entry,delete fault memory
SI B12 11 10
EKP function check; follow ISTA test module;*submit TC case for EKP replacement if necessary
DC_EKP
*Submit TC case for HDP
replacement
OK
Yes
EKP function check; follow ISTA test module;*submit TC case for EKP replacement if necessary
OK
DC_EKP
Yes
*Submit TC case for HDPreplacement
OK
*Submit TC case for HDP
replacement
N55 E8x, E9x, E7x has no low pressure sensor
Rail PressureSensor
HDP Electric
After EngineOff
Rail pressuredeviation
Rail PressureSensor
Plausibility
33I ++
I B 12 11 10 N54, N54, N55 - D%+77 * HDP H+-779 F%97
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