Multiplex Communication System - Toyota Tundra 2005 Service - Repair - Maintenance

The "Current Flow Chart" section, describes which parts each power source (fuses, fusible links, and circuit breakers)
transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each system
are explained. Since all System Circuit diagrams start from the power source, the power source system must be fully
understood.
J POWER SOURCE (Current Flow Chart)
The chart below shows the route by which current flows from the battery to each electrical source
(Fusible Link, Circuit Breaker, Fuse, etc.) and other parts.
Battery 30A AM2
Starter
Engine Room R/B (See Page 20)
20A
10A
Power Source
E 6
3 EA2 1 EA1
E 7
B
E 7
B-O
E 7
E 7
∗
The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
2 Fusible Link Block
S 2
100A ALT
Fuse System
ABS
ABS and Traction Control
STOP
Cruise Control
Electronically Controlled Transmission

Multiplex Communication System

Cigarette Lighter
Combination Meter
Headlight
DOME Interior Light
Key Reminder and Seat Belt Warning
Light Auto Turn Off
Theft Deterrent and Door Lock Control
1.25B FL MAIN
W
50A MAIN
B
2
7.5A AM2
2
15A HAZ-RADIO
INJECTION Relay
1 3
2 2
B
2 4
2 2
STARTER Relay
B
1 3
2 2
B
2 4
2
2
2005 TOYOTA TUNDRA (EWD611U)
Short Pin
15A EFI
6 10A HAZARD
20A RADIO NO.1
10A HORN
6 60A ABS
Battery
I 2
7
W
2 EB1 I 2
6
W-R
2 EB1
W
2
W-B
8 4
B-W
W-B
3 2
B-W
10A ECU-B
2
7.5A DOME
2
5
40A DOOR LOCK CB
W
1
1
7.5A DOME
W
1
W W
I 2 1
W
1
2 1
TAIL
Relay
I 8
4 3
Ignition SW
1 1
1
15A TAIL
20A DEFOG
B-Y
1
15A RAD CIG
B-Y
1
B
2
Page
194
187
180
166
210
214
230
112
122
W-L
2
1
R
1
G
G
1
W-R
1
P-L
1
9