Starter Signal Circuit - Toyota T100 1996 Service Manual

DI−248

Starter Signal Circuit

CIRCUIT DESCRIPTION
When the engine is cranked, the intake air flow is slow, so fuel vaporization is poor. A rich mixture is therefore
necessary in order to achieve good startability. While the engine is being cranked, the battery positive volt-
age is applied to terminal STA of the ECM. The starter signal is mainly used to increase the fuel injection
volume for the starting injection control and after−start injection control.
WIRING DIAGRAM
IG
Switch
6
W
3
1
14
IA3
6
2 R/B
No.2
5
2
2
2
1
2
Battery
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS
W
Park/Neutral
Position Switch
B−O
22
(A/T)
B
B−O
IE1
5
6
B (M/T)
Clutch Start
Cancel Switch
3
B−R
(M/T)
1 2
Clutch
Start
Switch
IC
− ENGINE (5VZ−FE)
15
B (A/T)
IE1
1 5
Starter
Relay
B−R
(M/T)
3
2
B−W
(A/T)
1
13
IA3
1
B−W
2
EB1
IC
11 13
B−W (M/T)
E4 E7
21
(M/T)(A/T)
IE1
B−W
(A/T)
1
B−W
S1
Starter
DI0VA−01
ECM
STA
E1
A00772