Toyota 2001 CELICA, Wiring Diagram

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2001 CELICA (EWD432U)
70
ENGINE CONTROL
E2 (A), E3 (B), E4 (C), E5 (D) ENGINE CONTROL MODULE
BATT − E1 : Always 9.0 − 14.0 volts
+B − E1 : 9.0 − 14.0 volts (Ignition SW at ON position)
VC − E2 : 4.5 − 5.5 volts (Ignition SW at ON position)
VTA − E2 : 0.3 − 0.8 volts (Ignition SW ON and throttle valve fully closed)
3.2 − 4.9 volts (Ignition SW ON and throttle valve open)
THA − E2 : 0.5 − 3.4 volts (Ignition SW ON and intake air temp. 20 ° C, 68 ° F)
THW − E2 : 0.2 − 1.0 volts (Ignition SW ON and coolant temp. 80 ° C, 176 ° F)
STA − E1 : 6.0 − 14.0 volts (Engine cranking)
W − E1 : 9.0 − 14.0 volts (No trouble and engine running)
STP − E1 : 9.0 − 14.0 volts (Brake pedal depress)
RSO − E1 : 9.0 − 14.0 volts (Ignition SW at ON position)
IGT1, IGT2, IGT3, IGT4 − E1 : 0.8 − 1.2 volts (Engine cranking or idling)
#10, #20, #30, #40 − E01, E02 : 9.0 − 14.0 volts (Ignition SW at ON position)
RESISTANCE OF ECU WIRING CONNECTORS
(Disconnect wiring connector)
VTA − E2 : 3.3 − 10.0 k Ω (Throttle valve fully open)
0.2 − 0.8 k Ω (Throttle valve fully closed)
VC − E2 : 3.0 − 7.0 k
Ω
THA − E2 : 2.0 − 3.0 k Ω (Intake air temp. 20 ° C, 68 ° F)
THW − E2 : 0.2 − 0.4 k Ω (Coolant temp. 80 ° C, 176 ° F)
RSO : 19.3 − 22.3 Ω
C/OPN RELAY
5 − 3 : Closed with the starter cranking and engine running
EFI RELAY
3 − 5 : Closed with the ignition SW at ON or ST position
E6 ENGINE COOLANT TEMP. SENSOR
1 − 2 : 10.0 − 20.0 k Ω ( − 20 ° C, − 4 ° F)
4.0 − 7.0 k
Ω
( 0
°
C, 32
°
F)
2.0 − 3.0 k Ω ( 20 ° C, 68 ° F)
0.9
−
1.3
k
Ω
(
40 °
C,
104 °
F)
0.4 − 0.7 k Ω ( 60 ° C, 140 ° F)
0.2 − 0.4 k Ω ( 80 ° C, 176 ° F)
SERVICE HINTS