1998 TOYOTA LAND CRUISER horn

27 Noise NOISE PRODUCED BY VIBRATION OR SHOCK WHILE DRIVING
No
Ye s Is radio assembly properly installed?
Noise is produced from static eletricity accumulating in the vehicle body. With vehicles stationary lightly tap each system.
Is noise produced?Install properly.
Each system faulty. Is speaker properly installed?
No
No Ye s
Ye s
28 Noise NOISE PRODUCED WHEN ENGINE STARTS
NoYe s Whistling noise which becomes high-pitched when
accelerator strongly depressed, disappears shortly
after engine stops.Generator noise.
A/C noise.
Fuel gauge noise.
Horn noise.
Ignition noise.
Turn signal noise.
Washer noise.
Engine coolant temp. gauge noise.
Wiper noise. Whining noise occurs when A/C is operating.
Scratching noise occurs during sudden acceleration, driving on rough
roads or when ignition switch is turned ON.
Clicking sound is heard when horn button is pressed, then
released. Whirring/grating sound is heard when pushed
continuously.
Murmuring sound stops when engine stops.
Tick-tack noise occurs in co-ordination with blinking
offlasher.
Noise occurs during window washer operation.
Scratching noise occurs while engine is running,
and continues a while even after engine stops.
Scraping noise in line with wiper beat.
Other type of noiseYe s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s No
No
No
No
No
No
No
No
BE-168
- BODY ELECTRICALAUDIO SYSTEM
2541 Author
: Date
:
2004 LAND CRUISER (RM1071U)

BE0FZ-19
I24653
I24654
6
I04197
BE-198
- BODY ELECTRICALHORN SYSTEM
2571 Author
: Date
:
2004 LAND CRUISER (RM1071U)
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.

I25040
Built in relayExcept built in relay
- BODY ELECTRICALHORN SYSTEM
BE-199
2572 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3. INSPECT ENGINE ROOM R/B RELAY CIRCUIT (See
Pase BE-15)
HINT:
The horn relay is built in engine room junction block. Also the
relay is constructed with a relay block that is in the junction block
as a unit. To disconnect the wire harness connecting with relay
block is impossible. If the relay has a malfunction, replace it with
junction block assembly wire harness together.

BE0FY-27
I25527
HornEngine Room R/B

HORN Fuse

HORN Relay
Horn Switch
- BODY ELECTRICALHORN SYSTEM
BE-197
2570 Author
: Date
:
2004 LAND CRUISER (RM1071U)
HORN SYSTEM
LOCATION

I25271
Short Pin
Short Pin
HAZ-TRN Fuse
ALT-S Fuse
STARTER Fuse
GLOW Fuse
BAT Fuse
AMP Fuse
TEL Fuse
HEAD LH-LWR Fuse
HEAD RH-LWR Fuse
HORN FuseEFI OR ECD Fuse
ETCS Fuse
AM2 Fuse
HEAD LH-UPR Fuse
HEAD RH-UPR Fuse
MG CLT Relay
HEAD Relay
HEAD HI Relay
HORN Relay
65 1B
39 1A
2 1D
1 1D
24 1B
4 1B
36 1B
16 1B
33 1A
25 1B
26 1B
8 1B
32 1A
23 1B
12 1B
3 1B
11 1B
2 1B
9 1B
33 1B
19 1A
26 1A
28 1A
20 1A
12 1A
10 1B
22 1B
15 1A
21 1B
9 1A
1 1B
8 1A
4 1A
1 1C
30 1A
23 1A
24 1A
35 1B
31 1A
29 1A
14 1B
11 1A
17 1B
1 1A
7 1B
20 1B
19 1B
14 1A
6 1B
22 1A
13 1B
5 1A
34 1B
16 1A
21 1A
30 1B
18 1A
18 1B
17 1A
29 1B
27 1A
25 1A
31 1B
13 1A
2 1A
3 1A
5 1B
32 1B
53
21
53
21
53
2
1
53
21
6 1A BE-18
- BODY ELECTRICALPOWER SOURCE
2391 Author
: Date
:
2004 LAND CRUISER (RM1071U)

- BODY ELECTRICALPOWER SOURCE
BE-19
2392 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(a) Remove the fuse from the junction block and inspect the
connector on junction block side.
Fuse Tester connectionConditionSpecified condition
TOWING 1 - GroundConstantBattery positive voltage
MIR HTR 3 - GroundConstantBattery positive voltage
RR HTR 5 - GroundConstantBattery positive voltage
HAZ-TRN 7 - GroundConstantBattery positive voltage
ALT-S 9 - GroundConstantBattery positive voltage
NV-IR 13 - GroundConstantBattery positive voltage
FR FOG 13 - GroundConstantBattery positive voltage
BRK CTRL 15 - GroundConstantBattery positive voltage
HEAD CLNER 17 - GroundIgnition switch ONBattery positive voltage
FR-IG 19 - GroundIgnition switch ONBattery positive voltage
PANEL 21 - GroundLight control switch HEAD or TAILBattery positive voltage
TOWING TAIL 23 - GroundLight control switch HEAD or TAILBattery positive voltage
TAIL 25 - GroundLight control switch HEAD or TAILBattery positive voltage
BAT 29 - GroundConstantBattery positive voltage
TEL 31 - GroundConstantBattery positive voltage
AMP 33 - GroundConstantBattery positive voltage
EFI or ECD NO.1 35 - GroundConstantBattery positive voltage
AM2 37 - GroundConstantBattery positive voltage
ETCS 39 - GroundConstantBattery positive voltage
HORN 41 - GroundConstantBattery positive voltage
HEAD LH-UPR 51 - GroundLight control switch HI or FlashBattery positive voltage
HEAD RH-UPR 49 - GroundLight control switch HI or FlashBattery positive voltage
HEAD LH-LWR 47 - GroundLight control switch HEADBattery positive voltage
HEAD RH-LWR 45 - GroundLight control switch HEADBattery positive voltage
ST1 1 - GroundConstantBattery positive voltage
AHC 1 - GroundConstantBattery positive voltage
ABS NO.1 1 - GroundConstantBattery positive voltage
ABS NO.2 1 - GroundConstantBattery positive voltage
STARTER 1 - GroundConstantBattery positive voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.
(b) Remove the relay from the junction block and inspect the
connector on junction block side.
Relay Tester connectionConditionSpecified condition
AHC 1 - GroundIgnition switch ONBattery positive voltage
ABS SOL 1 - GroundIgnition switch ONBattery positive voltage
ABS MTR1 1 - GroundConstantBattery positive voltage
ABS MTR2 1 - GroundIgnition switch ONBattery positive voltage
STARTER 5 - GroundConstantContinuity
STARTER 2 - GroundIgnition switch ONBattery positive voltage
EFI or ECD 3 - GroundConstantBattery positive voltage
C/OPN SPIL VLV 5 - GroundConstantBattery positive voltage
C/OPN SPIL VLV 2 - GroundIgnition switch ONContinuity

- BODY ELECTRICALPOWER SOURCE
BE-21
2394 Author
: Date
:
2004 LAND CRUISER (RM1071U) HEAD 1 (1C) - 22 (1B)
ConstantContinuity
HEAD 1 (1C) - 33 (1B)Apply B+ between terminals 1 (1C) and 22 (1B).Continuity
HEAD 1 (1C) - 19 (1A)Apply B+ between terminals 1 (1C) and 22 (1B).Continuity
HEAD 1 (1C) - 26 (1A)Apply B+ between terminals 1 (1C) and 22 (1B).Continuity
HEAD 1 (1C) - 28 (1A)Apply B+ between terminals 1 (1C) and 22 (1B).Continuity
HEAD 1 (1C) - 20 (1A)Apply B+ between terminals 1 (1C) and 22 (1B).Continuity
HEAD 1 (1C) - 9 (1A)Apply B+ between terminals 1 (1C) and 22 (1B).Continuity
HEAD HI 1 (1C) - 10 (1B)ConstantContinuity
HEAD HI 1 (1C) - 12 (1A)Apply B+ between terminals 1 (1C) and 10 (1B).Continuity
HEAD HI 1 (1C) - 1 (1B)Apply B+ between terminals 1 (1C) and 10 (1B).Continuity
HEAD HI 1 (1C) - 8 (1A)Apply B+ between terminals 1 (1C) and 10 (1B).Continuity
HORN 1 (1C) - 21 (1B)ConstantContinuity
HORN 1 (1C) - 4 (1A)Apply B+ between terminals 1 (1C) and 21 (1B).Continuity
HORN 1 (1C) - 15 (1A)Apply B+ between terminals 1 (1C) and 21 (1B).Continuity
If the circuit is not as specified, replace it with junction block as-
sembly.
HINT:
The relay is built in engine room junction block. Also the relay
is constructed with a relay block that is in the junction block as
a unit. To disconnect the wire harness connecting with relay
block is impossible. If the relay has a malfunction, replace it with
junction block assembly wire harness together.

I24921
Fuses:
1. TOWING
2. MIR HTR
3. RR HTR
4. HAZ-TEN
5. ALT-S
6. NV-IR
7. FR FOG
8. TOWING BRK
9. HEAD CLNER
10. FR-IG
11. PANEL
12. TOWING TAIL
13. TAIL
14. -
15. BAT
16. TEL
17. AMP
18. EFI or ECD NO.1
19. AM2
20. ETCS
21. HORN
22. HEAD RH-LWR
23. HEAD LH-LWR
24. HEAD RH-UPR
25. HEAD LH-UPR
26.STARTER
27. GLOW
28. ST1
29. AHC
30. ABS NO.1
31. ABS NO.2
Relays:
A. AHC
B. ABS SOL
C. ABS MTR1
D. ABS MTR2
E. STARTER
F. EFI or ECD
G. C/OPN
H. F/PUMP
I. HTR
J. IG1 NO.1
K. MIR HTR
L. RR HTR
M. FR FOG
N. TAIL
O. PANEL
P. CDS FAN
Q. MG CLT
R. W/TEMP CUT
S. HEAD
T. HEAD HI
U. HORN
A
1
B CD
E F
G
H I
J
KL
MN O
P
RST
U Q
2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 18 19 20 21 22 23 24 25 26
2728 29 30 31
Engine Room R/B BE-12
- BODY ELECTRICALPOWER SOURCE
2385 Author
: Date
:
2004 LAND CRUISER (RM1071U)