Toyota 2003 Prius, Manual

Page: 76 / 307

2003 PRIUS (EWD493U)
75
E7 (A), E8 (B), E9 (C), E10 (D) ENGINE CONTROL MODULE
BATT–E1 : Always approx. 9–14 volts
+B–E1 : 9–14 volts with the ignition SW on and the engine stopping
VC–E2 : 4.5–5.5 volts with the ignition SW on and the engine stopping
IGF–E1 : Pulse generation with the engine idling
THA–E2 : 0.5–3.4 volts with the engine idling and the intake air temp. 20
°
C (68
°
F)
THW–E2 : 0.2–1.0 volts with the engine idling and the engine coolant temp. 80
°
C (176
°
F)
W–E1 : 9–14 volts with the engine idling
: 0–3 volts with the ignition SW on and the engine coolant temp. sensor connector disconnects
ESTP–E1 : 9–14 volts with the brake pedal depressed
FC–E01 : 9–14 volts with the ignition SW on and the engine stopping
: 0–3 volts with the engine idling
+BM–E1 : Always approx. 9–14 volts
MREL–E1 : 9–14 volts with the ignition SW on and the engine stopping
EVP1–E1 : 9–14 volts with the ignition SW on and the engine stopping
HT1A, HT1B : 9–14 volts with the ignition SW on and the engine stopping
TC–E1 : 9–14 volts with the ignition SW on and the engine stopping
KNK1–E2 : Pulse generation with the engine idling
NE+, G2–NE– : Pulse generation with the engine idling
OCV+ –OCV– : Pulse generation with the ignition SW on and the engine stopping
IGT1, IGT2, IGT3, IGT4–E1 : Pulse generation with the engine idling
#10, #20, #30, #40–E01 : Pulse generation with the engine idling
E01, E02, E03, E1, E2, ME01–GROUND : Always continuity
E1 ENGINE COOLANT TEMP. SENSOR
2–1 : Approx. 14.96 k
Ω
(–20
°
C, –4
°
F)
Approx. 2.44 k
Ω
(20
°
C, 68
°
F)
Approx. 0.31 k
Ω
(80
°
C, 176
°
F)
Approx. 0.14 k
Ω
(110
°
C, 230
°
F)
: PARTS LOCATION
Code See Page Code See Page Code See Page
A7
36
H14 D
37
J17
37
A8 36 I1 35 J18 37
B8 36 I2 35 J22 A 37
C1
34
I3
35
J23 B
37
C2 34 I4 35 J24 A 37
C6 34 I5 35 J25 B 37
C10 A
36
I6
35
J26
37
C11 B
36
I7
35
K1
35
D2 36 I8 35 M1 35
E1
34
I15
37
N1
35
E7 A 36 J1 37 O1 35
E8 B 36 J4 A 37 S3 37
E9 C 36 J5 B 37 T2 35
E10 D
36
J7
37
T3
35
F12 C
34
J8 A
37
V1
35
F13 D 34 J9 B 37 V2 35
F16
38
J11
37
V3
35
F18 38 J12 A 37 V4 39
G1 37 J13 B 37 V5 39
H3 34 J14 A 37 V6 39
H9
37
J15 B
37
H12 B 37 J16 37
SERVICE HINTS