Ecm Power Source Circuit - Toyota T100 1996 Service Manual

ECM Power Source Circuit

CIRCUIT DESCRIPTION
When the ignition switch is turned ON, battery positive voltage is applied to the coil, closing the contacts of
the EFI main relay (Making: EFI) and supplying power to terminal +B of the ECM.
WIRING DIAGRAM
B−R
7
IG
Switch
8
W−R
8
IA3
W−R
4 2
AM2
3
R−L
2
2
W−R
EFI
1
R/B No.2
Battery
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS
B−Y
1C
1A
IGN
3 17
J/B No.1
EA1
3 2 2 1
EFI
Relay
2 2 5 2 2 2
B−W
EA
− ENGINE (3RZ−FE)
4
W−R
9
W−R
(M/T)
EA1
W−R (A/T)
W−R
12 12
(M/T)
E4 E4
IE1
14 24
BR
E7 E7
(M/T) (A/T)
EB
DI−115
DI0U7−03
ECM
+B
E1
A00646