Toyota 1994 CAMRY, Repair Manual

Page: 84 / 307

84
ENGINE CONTROL (1MZ–FE)
CIRCUIT OPENING RELAY
2–1 : CLOSED WITH STARTER RUNNING OR MEASURING PLATE (VOLUME AIR FLOW (AIR FLOW METER)) OPEN
EFI MAIN RELAY
2–4 : CLOSED WITH IGNITION SW AT ON OR ST POSITION
E 4
ENGINE COOLANT TEMP. SENSOR (EFI WATER TEMP. SENSOR)
1–2 : 10.0 – 20.0 K (–20
°
C, –4
°
F)
: 4.0 – 7.0 K (0
°
C, 32
°
F)
: 2.0 – 3.0 K (20
°
C, 68
°
F)
: 0.9 – 1.3 K (40
°
C, 104
°
F)
: 0.4 – 0.7 K (60
°
C, 140
°
F)
: 0.2 – 0.4 K (80
°
C, 176
°
F)
E 7(A), E 8(B), E 9(C), E10(D)
ENGINE CONTROL MODULE (ENGINE AND ELECTRONIC CONTROLLED
TRANSMISSION ECU)
VOLTAGE AT ENGINE CONTROL MODULE (ECU) WIRING CONNECTOR
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 – E1 : 9.0–14.0 VOLTS (IGNITION SW ON AND THROTTLE VALVE FULLY OPEN)
0–3.0 VOLTS (IGNITION SW ON AND THROTTLE VALVE FULLY CLOSED)
VC – E1 : ALWAYS 4.5–5.5 VOLTS (IGNITION SW AT ON POSITION)
VTA – E1 : 0.3–0.8 VOLTS (IGNITION SW ON AND THROTTLE VALVE FULLY CLOSED)
3.2–4.9 VOLTS (IGNITION SW ON AND THROTTLE VALVE FULLY OPEN)
VG – E1 : 4.0–5.5 VOLTS (IGNITION SW AT ON POSITION)
THA – E1 : 0.5–3.4 VOLTS (IGNITION SW ON AND INTAKE AIR TEMP. 20
°
C, 68
°
F)
THW – E1 : 0.2–1.0 VOLTS (ENGINE IDLING AND COOLANT TEMP. 80
°
C, 176
°
F)
#10, #20, #30, #40, #50, #60
– E01 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
PULSE GENERATION (ENGINE IDLING)
IGT1, IGT2, IGT3
IGT4, IGT5, IGT6 – E1 : PULSE GENERATION (ENGINE IDLING)
IGF – E1 : 4.5–5.5 VOLTS (IGNITION SW AT ON POSITION)
PULSE GENERATION (ENGINE IDLING)
G22+ – G– : PULSE GENERATION (ENGINE IDLING)
NE+ – G– : PULSE GENERATION (ENGINE IDLING)
RSC, RSO – E1 : PULSE GENERATION (ENGINE IDLING AND A/C OPERATION)
OXS, OXL, OXR – E1 : PULSE GENERATION (MAINTAIN ENGINE SPEED AT 2500 RPM FOR TWO MINUTES AFTER WARMING UP)
HTS, HTL, HTR – E01 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
0–3.0 VOLTS (ENGINE IDLING)
KNKL, KNLR – E1 : PULSE GENERATION (ENGINE IDLING)
NSW – E1 : 9.0–14.0 VOLTS (IGNITION SW ON AND OTHER SHIFT POSITION IN P OR N POSITION)
BELOW 3.0 VOLTS (IGNITION SW ON AND SHIFT POSITION IN P OR N POSITION)
SP1 – E1 : PULSE GENERATION (IGNITION SW ON AND ROTATE DRIVING WHEEL SLOWLY)
TE1 – E1 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
TE2 – E1 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
W – E1 : BELOW 3.0 VOLTS (MULFUNCTION INDICATOR LAMP ON)
9.0–14.0 VOLTS (MULFUNCTION INDICATOR LAMP OFF AND ENGINE RUNNING)
A/C – E1 : BELOW 1.5 VOLTS (ENGINE IDLING AND A/C SW ON)
7.5–14.0 VOLTS (A/C SW OFF)
ACT – E1 : 9.0–14.0 VOLTS (ENGINE IDLING AND A/C SW ON)
BELOW 1.5 VOLTS (A/C SW OFF)
ACIS – E01 : 9.0–14.0 VOLTS (IGNITION SW AT ON POSITION)
STA – E1 : 6.0 VOLTS OR MORE (ENGINE CRANKING)
I 4, I 5, I 6, I 7, I 8, I 9
INJECTOR
1–2 : APPROX. 13.8
T 1
THROTTLE POSITION SENSOR
3–1 : 0.2–5.7 K WITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0 MM (0 IN.)
2–1 : LESS THAN 2.3 K WITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0.5 MM (0.020 IN.)
WITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0.7 MM (0.0276 IN.)
3–1 : 2.0–10.2 K WITH THROTTLE VALVE FULLY OPEN
SERVICE HINTS