Toyota 1993 MR2, Wiring Diagrams

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76
ENGINE CONTROL (5S–FE)
E 6, E 7, E 8
PCME (ENGINE ECU (M/T) OR ENGINE AND ECT ECU (A/T))
VOLTAGE AT PCME (ECU) WIRING CONNECTORS
BATT –E1 : ALWAYS 9.0–14.0 VOLTS
+B –E1 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
+B1 –E1 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
IDL –E2 : 9.0–14.0 VOLTS (IGNITION SW ON AND THROTTLE VALVE OPEN)
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)
PIM –E2 : 3.3–3.9 VOLTS (IGNITION SW AT ON POSITION)
#10, #20 – E01, E02 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
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)
IGT –E1 : 0.8–1.2 VOLTS (ENGINE CRANKING OR IDLING)
W –E1 : 9.0–14.0 VOLTS (NO TROUBLE AND ENGINE RUNNING)
ACT –E1 : 4.5–5.5 VOLTS (IGNITION SW ON AND AIR CONDITIONING ON)
ACA –E1 : 0–3.0 VOLTS (IGNITION SW ON AND AIR CONDITIONING ON)
ISCC, ISCO–E1 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
TE1
–E1 : 9.0–14.0 VOLTS (IGNITION SW ON AND DLC (CHECK CONNECTOR) TE1–E1 NOT CONNECTED)
0–3.0 VOLTS (IGNITION SW ON AND DLC (CHECK CONNECTOR) TE1–E1 CONNECTED
)
NSW –E1 : 0–3.0 VOLTS (IGNITION SW ON AND PNS (NEUTRAL START SW) POSITION P OR N RANGE)
9.0–14.0 VOLTS (IGNITION SW ON AND PNS (NEUTRAL START SW) EX. POSITION P OR N RANGE)
RESISTANCE AT PCME (ECU) WIRING CONNECTORS
(DISCONNECT WIRING CONNECTOR)
IDL –E2 : INFINITY (THROTTLE VALVE OPEN)
2.3 K OR LESS (THROTTLE VALVE FULLY CLOSED)
VTA –E2 : 3.3–10.0 K (THROTTLE VALVE FULLY OPEN)
0.2–0.8 K (THROTTLE VALVE FULLY CLOSED)
VC –E2 : 3.0–7.0 K
THA –E2 : 2.0–3.0 K (INTAKE AIR TEMP. 20
°
C, 68
° F)
THW –E2 : 0.2–0.4 K (COOLANT TEMP. 80
°
C, 176
° F
)
G+ – G– : 0.17–0.21 K
ISCC, ISCO–+B, +B1: 19.3–22.3
: PARTS LOCATION
CODE SEE PAGE CODE SEE PAGE CODE SEE PAGE
A 9 26
E 7
C 24 (5S–FE) J 1 26
A14 26
E 7
F 24 (5S–FE) J 3 26
C 1 24 (5S–FE)
E 8
D 24 (5S–FE) K 1 24 (5S–FE)
C 9 26
E 8
E 24 (5S–FE) N 1 24 (5S–FE)
C10 C 26 F 4 26 O 1 24 (5S–FE)
C11 A 26 I 1 24 (5S–FE) O 2 24 (5S–FE)
C12 B 26 I 3 24 (5S–FE) P 7 27
D 1 24 (5S–FE) I 4 24 (5S–FE)
T 2
A 24 (5S–FE)
D 2 26 I 5 24 (5S–FE)
T 2
B 24 (5S–FE)
E 3 24 (5S–FE) I 6 24 (5S–FE) V 1 24 (5S–FE)
E 4 24 (5S–FE) I 7 24 (5S–FE) V 2 24 (5S–FE)
E 6
A 24 (5S–FE) I 8 24 (5S–FE) V 3 24 (5S–FE)
E 6
B 24 (5S–FE) I11 26 V 4 24 (5S–FE)
: RELAY BLOCKS
CODE SEE PAGE RELAY BLOCKS (RELAY BLOCK LOCATION)
1 20 R/B NO. 1 (LEFT KICK PANEL)
2 21 R/B NO. 2 (ENGINE COMPARTMENT LEFT)
5 21 R/B NO. 5 (FRONT LUGGAGE COMPARTMENT RIGHT)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODE SEE PAGE JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
3A
3C 22 COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
3D
( )
SERVICE HINTS