EFI SYSTEM
EFI SYSTEM
EFI SYSTEM
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Revision 1<br />
EF–150-1<br />
DTC P1300/36 Ion System Malfunction<br />
WIRING DIAGRAM FOR S221<br />
IG SW<br />
ACC<br />
IG No. 1<br />
IG No. 2<br />
ST<br />
ACC<br />
IG1<br />
IG2<br />
ST<br />
F/L 60 A<br />
1<br />
R/B<br />
15 A<br />
<strong>EFI</strong><br />
Main<br />
relay<br />
Fuel<br />
pump<br />
relay<br />
3 5<br />
13<br />
10 A<br />
ECU<br />
IG<br />
4<br />
6<br />
J/C<br />
<strong>EFI</strong> ECU<br />
(IG1) 60<br />
(IG2) 59<br />
(ICMB) 14<br />
(IG3) 58<br />
(IG4) 57<br />
(E01) 82<br />
(E1) 23<br />
7 (+B1) 43<br />
(IE)<br />
36 (+B2)<br />
10 A<br />
ENGINE<br />
B1<br />
G1<br />
S1<br />
S2<br />
I/O<br />
S3<br />
S4<br />
G2<br />
B2<br />
C1<br />
C2<br />
C3<br />
C4<br />
I/C<br />
IG COIL<br />
N80<br />
N07<br />
N05<br />
N81<br />
N54<br />
N53<br />
N82<br />
N65<br />
N64<br />
N85<br />
N84<br />
N83<br />
#1<br />
#2<br />
#3<br />
#4<br />
Spark<br />
plug<br />
#4 #3 #2 #1<br />
Fuel<br />
pump<br />
To injector<br />
N85<br />
N84<br />
N83<br />
N82<br />
N65<br />
N64<br />
N81<br />
N54<br />
N53<br />
N80<br />
N07<br />
N05<br />
IG COIL wire harness side<br />
B1 G1 S1 S2 I/O S3 S4 G2<br />
I/C C4 C3 C2 C1 B2<br />
IG2<br />
IG1<br />
ACC<br />
Igniter unit wire harness side<br />
(ECU side)<br />
Igniter unit wire harness side<br />
(IG coil side)<br />
N30 N01 R01<br />
O12 M01<br />
AM ST<br />
IG switch wire harness side<br />
sEF00045-00031<br />
CIRCUIT DESCRIPTION<br />
This system detects any misfire of the engine by using an ion current which has the same waveforms as<br />
those of the combustion pressure. When any misfire takes place, no ion current is produced. Therefore, if<br />
the input voltage at the ECU side is below a certain value, it is judged that a misfire took place. Since the<br />
detected ion current is very weak, it is amplified in the ignitor unit. In addition, a vibration waveform appears<br />
in the ion current waveform when knocking takes place. Hence, knocking control is also performed<br />
by detecting vibration waveforms. This applies only to vehicles mounted with Type K3 engine with EU specifications.<br />
sEF00046-00000
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