Toyota Sequoia (2005). Manual — part 890
BE0FZ–25
I24377
I24378
I04197
–
BODY ELECTRICAL
HORN SYSTEM
BE–145
3549
INSPECTION
1.
INSPECT HORN SWITCH
(a)
Disconnect the negative (–) terminal from the battery.
(b)
Remove the left and right covers from the steering wheel.
(c)
Using a torx socket wrench, loosen the 2 bolts.
(d)
Pull up the horn pad and place it on the steering column,
as shown.
HINT:
Do not disconnect the connector from the horn pad.
(e)
Disconnect the connector from the slip ring.
(f)
Check that no continuity exists between terminal 6 of the
connector and body ground.
(g)
Check that continuity exists between terminal 6 of the
connector and body ground when the horn contact plate
is pressed against the steering spoke assembly.
If continuity is not as specified, repair or replace the steering
wheel or wire harness as necessary.
(h)
Install the horn pad in place and using a torx socket
wrench, torque the 2 bolts.
Torque:
7.1 N·m (72 kgf·cm, 62 in.·lbf)
(i)
Install the left and right covers.
(j)
Connect the negative (–) terminal to the battery.
2.
INSPECT HORN OPERATION
Connect the positive (+) lead from the battery to the terminal
and negative (–) lead to the horn body and check that the horn
blows.
If operation is not as specified, replace the horn.
3.
INSPECT HORN SWITCH CIRCUIT
(See page
I01200
2
1
3
5
2
5
1
3
BE–146
–
BODY ELECTRICAL
HORN SYSTEM
3550
4.
INSPECT HORN 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.
5.
INSPECT HORN RELAY CIRCUIT
(See page
BE26G–04
I28424
Engine Room J/B
TOWING Fuse
Trailer Socket
Towing Converter Relay
(Located inside of the quarter trim panel LH)
Engine Room R/B No. 3
BATT CHARGE Relay
TOWING TAIL Relay
TOWING BRK Fuse
TOWING TAIL Fuse
Brake Controller
(Located inside of the cowl side trim board LH)
–
BODY ELECTRICAL
TRAILER TOWING
BE–147
3551
TRAILER TOWING
LOCATION
BE2D5–02
I24381
Wire Harness Side:
BE–148
–
BODY ELECTRICAL
TRAILER TOWING
3552
INSPECTION
1.
INSPECT TOWING CONVERTER CIRCUIT
Remove the towing converter 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
4 – 6
Turn signal switch LEFT or hazard warning switch ON
10 – 14
V
↔
0 V
4 – 6
Turn signal switch LEFT and stop light switch ON (Brake pedal depressed)
10 – 14 V
↔
0 V
4 – 6
Turn signal switch OFF, hazard warning switch OFF and stop light switch OFF
(Brake pedal released)
0 V
4 – 6
Stop light switch ON (Brake pedal depressed)
10 – 14
V
6 – 9
Turn signal switch LEFT or hazard warning switch ON
10 – 14
V
↔
0 V
6 – 9
Turn signal switch OFF or RIGHT and hazard warning switch OFF
0 V
6 – Body ground
Always
Continuity
2 – 6
Turn signal switch RIGHT or hazard warning switch ON
10 – 14
V
↔
0 V
2 – 6
Turn signal switch RIGHT and stop light switch ON (Brake pedal depressed)
10 – 14 V
↔
0 V
2
6
Turn signal switch OFF, and hazard warning switch OFF and stop light switch OFF
0 V
2 – 6
Turn signal switch OFF, and hazard warning switch OFF and sto light switch OFF
(Brake pedal released)
0 V
2 – 6
Stop light switch ON (Brake pedal depressed)
10 – 14 V
↔
0 V
1 – 6
Always
10 – 14 V
6 – 8
Stop light switch ON (Brake pedal depressed)
10 – 14 V
6 – 8
Stop light switch OFF (Brake pedal released)
0 V
3 – 6
Turn signal switch RIGHT or hazard warning switch ON
10 – 14
V
↔
0 V
3 – 6
Turn signal switch OFF or LEFT and hazard warning switch OFF
0 V
If the circuit is not as specified, inspect the circuit connected to
other parts.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст