Toyota 2000 MR2 Spyder, Manual

Page: 72 / 153

2000 MR2 (EWD408U)
64
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)
0.2–5.5 k
Ω
(Throttle valve fully closed)
VC–E2 : 2.0–7.0 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–E1 : 19.3–22.3
Ω
C/OPN RELAY
5–3 : Closed with the starter cranking and engine running
EFI MAIN RELAY
3–5 : Closed with the ignition SW at ON or ST position
E1 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)
: PARTS LOCATION
Code See Page Code See Page Code See Page
A7 32 F12 34 J3 A 33
C1 30 G1 30 J4 B 33
C2 30 H1 30 J5 35
C3 30 H2 30 K1 31
C5 32 H3 30 M1 31
C9 32 I1 30 N1 31
C10 A 32 I2 30 O1 31
C11 B 32 I3 30 S5 A 33
C12 C 32 I4 30 S6 B 33
D1 32 I5 30 S7 33
E1 30 I6 30 T1 31
E2 A 34 I7 30 V1 31
E3 B 34 I8 30 V2 31
E4 C 34 I9 30 V3 35
E5 D 34 I10 33 V4 35
SERVICE HINTS