Terminals Of Ecm - Toyota Corolla 2002 Repair Manual Supplement

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TERMINALS OF ECM

HINT:
The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropri-
ate conditions for checking each pair of terminals is also indicated.
The result of checks should be compared with the standard normal voltage for that pair of terminals, dis-
played in the STD Voltage column.
The illustration above can be used as a reference to identify the ECM terminal locations.
Symbols (Terminals No.)
+B (E24--61) -- E1 (E24--2)
+B (E24--1) -- E1 (E24--2)
IGSW (E24--70) -- E1 (E24--2)
MREL (E24--42) -- E1 (E24--2)
MREL (E24--42) -- E1 (E24--2)
GREL (E24--81) -- E1 (E24--2)
GREL (E24--81) -- E1 (E24--2)
VPA1 (E24--15) --
EVPA1 (E24--54)
VPA1 (E24--15) --
EVPA1 (E24--54)
VPA2 (E24--14) --
EVPA2 (E24--53)
VPA2 (E24--14) --
EVPA2 (E24--53)
VVPA1 (E24--34) --
EVPA1 (E24--54)
VVPA2 (E24--33) --
EVPA2 (E24--53)
VG (E23--36) -- EVG (E23--15)
THAF (E23--7) --
ETHAF (E23--6)
COROLLA Supplement (RM1129E)
To Alphabetical Index
To Sub Index
DIAGNOSTICS
E23
Wiring Color Terminal Description
B--W -- W--B Power source of ECM
B--W -- W--B Power source of ECM
SB (B--O) -- W--B Ignition switch
GR -- W--B EFI MAIN Relay
GR -- W--B EFI MAIN Relay
G--R -- W--B Glow plug relay
G--R -- W--B Glow plug relay
Accelerator pedal position
1
G -- Y *
sensor (for engine con-
2
Y -- L *
trol)
Accelerator pedal position
1
G -- Y *
sensor (for engine con-
2
Y -- L *
trol)
Accelerator pedal position
1
W -- Y *
sensor (for sensor mal-
2
B -- L *
function detection)
Accelerator pedal position
1
W -- Y *
sensor (for sensor mal-
2
B -- L *
function detection)
Power source of acceler-
1
B -- Y *
ator pedal position sensor
2
W -- L *
(for VPA1)
Power source of acceler-
1
B -- Y *
ator pedal position sensor
2
L -- L *
(for VPA2)
G -- L -- Y Mass air flow meter
Intake air temperature
G--R -- BR
sensor
TOYOTA COROLLA REPAIR MANUAL SUPP 1129E
-- ECD SYSTEM (1ND--TV)
E24
Condition
Ignition switch ON
Ignition switch ON
Ignition switch ON
Ignition switch ON
Ignition switch OFF
Ignition switch ON at cold engine
(Engine coolant temperature is less
than 20˚C (68˚F))
Idling at warmed engine
Ignition switch ON, accelerator ped-
al fully released
Ignition switch ON, accelerator ped-
al fully depressed
Ignition switch ON, accelerator ped-
al fully released
Ignition switch ON, accelerator ped-
al fully depressed
Ignition switch ON
Ignition switch ON
Idling
Idling, intake air temperature at 20
˚C (68 ˚F)
TO MODEL INDEX
05- -25
05MRK--01
G34810
STD Voltage (V)
9 to 15
9 to 15
9 to 15
9 to 15
0 to 1.5
5 to 15
0 to 1.5
0.5 to 1.1
3.0 to 4.6
0.9 to 2.3
3.4 to 5.0
4.5 to 5.5
4.5 to 5.5
0.5 to 3.4
0.5 to 3.4