Toyota Tundra 2005 Service - Repair - Maintenance page 4055

Multiplex Communication System - BEAN (Double Cab)
System Outline
This multiplex communication system is consisted of the BODY ECU, driver door ECU, passenger door ECU and sliding roof
control ECU.
Service Hints
B10 (B), B11 (C) Body ECU
(B) 1-Ground : Approx. 12 volts with the ignition SW at ON position
(B) 3-Ground : Approx. 12 volts with the ignition SW at ACC or ON position
(B) 9-Ground : Always approx. 12 volts
(C)25-Ground : Always approx. 12 volts
(C)15-Ground : Always continuity
D44 Driver Door ECU
21-Ground : Approx. 12 volts with the ignition SW at ON position
23-Ground : Always approx. 12 volts
25-Ground : Always approx. 12 volts
13-Ground : Always continuity
F17 Front Passenger Door ECU
19-Ground : Approx. 12 volts with the ignition SW at ON position
12-Ground : Always approx. 12 volts
20-Ground : Always approx. 12 volts
8-Ground : Always continuity
: Parts Location
Code
B8 66
B9 A 66
B10 B 66
B11 C 66
B12 70
C11 A 66
C12 B 66
C15 66
C16 66
D2 64
D6 67
D14 70
D15 70
D16 70
D17 70
D32 67
D34 70
D35 70
D36 70
D37 70
D38 70
D39 70
D40 70
D41 70
D42 70
: Relay Blocks
Code See Page
2 38
3 39
398
See Page Code
D43
D44
E8
F1
F2
F13
F17
G2
H1
H2
H7
H8
I22
I26
J31
J32
J34
J36
J37
J38
J39
J42
J43
J45
J46
Relay Blocks (Relay Block Location)
Engine Room R/B No.2 (Engine Compartment Left)
Engine Room R/B No.3 (Engine Compartment Left)
2005 TOYOTA TUNDRA (EWD611U)
See Page
70
70
64
64
64
34, 64
70
B 64
64
64
64
64
67
70
65
65
65
A 68
B 68
A 68
B 68
A 68
B 68
68
68
Code See Page
J47 A 68
J48 B 68
J49 A 68
J50 B 68
J58 68
M6 70
O7 69
O8 70
P5 69
P11 71
P12 71
P21 69
P22 71
P25 71
P26 71
P27 71
P28 71
R4 71
S3 69
T15 65
U1 69
V6 71
V7 71
W5 65