Toyota Sequoia (2005). Manual — part 891
I24379
Wire Harness Side:
I18635
1
2
3
4
5
I18635
1
2
3
4
5
–
BODY ELECTRICAL
TRAILER TOWING
BE–149
3553
2.
Trailer Socket 7 Pin Type:
INSPECT BRAKE CONTROLLER CIRCUIT
Remove the brake controller with the connector still connected
and inspect the wire harness side connector from the back side,
as shown in the table below.
Tester connection
Condition
Specified condition
1 – 3
Stop light switch ON (Brake pedal depressed)
10 – 14
V
1 – 3
Stop light switch OFF (Brake pedal released)
0 V
2 – 3
Always
10 – 14 V
3 – 4
Stop light switch ON (Brake pedal depressed)
10 – 14 V
3 – 4
Stop light switch OFF (Brake pedal released)
0 V
3 – 5
Light control switch TAIL or HEAD
10 – 14
V
3 – 5
Light control switch OFF
0 V
If the circuit is not as specified, inspect the circuit connected to
other parts.
3.
INSPECT TOWING TAIL RELAY CONTINUITY
Condition
Tester connection
Specified condition
Always
1 – 2
Continuity
Always
3 – 5
No continuity
Apply B+ between
terminals 1 and 2.
3 – 5
Continuity
If continuity is not as specified, replace the relay.
4.
INSPECT BATT CHARGE RELAY CIRCUIT
Condition
Tester connection
Specified condition
Always
1 – 2
Continuity
Always
3 – 5
No continuity
Apply B+ between
terminals 1 and 2.
3 – 5
Continuity
If continuity is not as specified, replace the relay.
BO4S4–01
–
BODY
BATTERY
BO–1
3554
BATTERY
PRECAUTION
NOTICE:
When disconnecting the battery terminal, initialize the following system after the terminal is recon-
nected.
System Name
See Page
Back Door Power Window Control System
V00005
Shape (Example)
Removal/Installation
Clip Remover
Pliers
Screwdriver
Scraper
BO0HX–01
BO–2
–
BODY
CLIP
3555
CLIP
REPLACEMENT
The removal and installation methods of typical clips used in body parts are shown in the table below.
HINT:
If the clip is damaged during the operation, always replace it with a new clip.
V00012
Removal
Installation
Shape (Example)
Removal/Installation
Removal
Installation
–
BODY
CLIP
BO–3
3556
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