1998 TOYOTA LAND CRUISER relay

I27343
Cowl Side J/B RH
SECURITY
ECU-B2
25
3B 3C172
71
3Q3Q
B-R37
39
1 ECU-IG1+B1
5
23
1 IG1 No. 2 Relay
2E
2E 2CAM1IL314
SB
4
IG1
AM122
I18
Ignition Switch
Fusible Link Block
Engine Room R/BF161
F17
F15
1B24BAT
21 Short Pin (A)
1
1C
E 2
MAIN J/B No. 3 J/B No. 2140A ALT
29
Battery1
IF Cowl Side J/B LHT5
Theft Deterrent ECU
B-GLG
+B2 3
B SBIL312 26
2Q 22
2Q
2Q20
SBIL322IF
W-B B-GB-GL-B21
2Q IG10
B-W SBIL315 SB
L-O
Cowl Side J/B LH
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-967
1160 Author
: Date
:
2004 LAND CRUISER (RM1071U)

I25780
T5
Theft Deterrent ECU
SH-
1
Horn DeterrentTheftT1W
W1
IL37
SB 3Q84
3B6 Cowl Side J/B RH DI-972
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1165 Author
: Date
:
2004 LAND CRUISER (RM1071U)
Theft deterrent horn circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is activated, the relay in the ECU is turned ON and OFF at of approximately
0.2 sec. interval, causing the theft deterrent horn to sound (See the wiring diagram below).
In this condition, if any of the following operations is done, the relay in the ECU is turned OFF, thus stopping
the theft deterrent horn from sounding:
(1) Unlock the driver door with key.
(2) Turn the ignition switch to ON position.
(3) Unlock the doors with the wireless door lock control system.
(4) Wait for approximately 60 seconds.
(5) Press the panic switch of the wireless door lock control system.
WIRING DIAGRAM
DIB4U-02

DI3CP-03
I25788
Engine Room R/B

BAT Fuse Theft Deterrent Horn
Ignition Switch
Theft Deterrent ECU
Cowl Side J/B LH

IG1 No.2 Relay

ECU-IG1 Fuse

AM1 Fuse
Cowl Side J/B RH

SECURITY Fuse

ECU-B2 Fuse
Security Indicator Fusible Link Block
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-963
1156 Author
: Date
:
2004 LAND CRUISER (RM1071U)
PARTS LOCATION

I24672
Hand-held tester
DLC3
DI-962
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1155 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(c) Prepare the hand-held tester.
(d) Connect the hand-held to DLC3.
(e) Turn the ignition switch ON and the hand-held tester
main switch ON.
(f) Use the hand-held tester to check the DTCs, note them
down. (For opening instructions, see the hand-held tes-
ter 's intrusion book).
10. DATA LIST
HINT:
By the DATA LIST displayed on the Hand-held tester, you can read the value of the switch, sensor, actuator
and so on without removing any parts. Reading the DATA LIST as a first step of troubleshooting is one of
the method to shorten the labor time.
(a) Turn the ignition switch OFF.
(b) Connect the hand-held tester to DLC3.
(c) Turn the ignition switch ON.
(d) According to the display on the tester, read the ºDATA LISTº.
THEFT DETERRENT ECU:
ItemConditionSpecified Condition
HOOD COURTSY SWEngine hood Close " OpenOFF/ON
INTRS DETECTIntrusion sensor detection OFF " ONOFF/ON
GLS BRK DETECTGlass broken sensor detection OFF " ONOFF/ON
KEY UNLK WRN SWInsert keyOFF/ON
IG SWIG switch ON or otherOFF/ON
PASSIVE MODEPassive mode " other modeOFF/ON
WARN BY GLS SENWarning by glass broken sensor OFF " ONOFF/ON
INTRUSION SENIntrusion sensor OFF " ONOFF/ON
WARNING (HORN)Warning by Horn OFF " ONOFF/ON
ENTRY DELAYEntry delay time0 s/14 s /30 s
11. ACTIVE TEST
HINT:
Performing ACTIVE TEST using the Hand-held tester allows the relay, and so on to operate without remov-
ing any parts. Performing ACTIVE TEST as a first step of troubleshooting is one of the method to shorten
the labor time.
DATA LIST can be displayed during ACTIVE TEST.
(a) Turn the ignition switch OFF.
(b) Connect the Hand-held tester to DLC3.
(c) Turn the ignition switch ON.
(d) According to the display on tester, perform the ºACTIVE TESTº.
THEFT DETERRENT ECU:
ItemTest detailsDiagnostic note
SECURITY INDICTurns security indicator ON/OFFConnect terminals TC and E1 of DLC1
SECURITY HORN2Turns security horn2 ON/OFF-

I27942
BJ1
BP45D27
Wireless Door
Lock Receiver
+B
W-B1
W-BE to DOME Relay
L-Y
L-Y
EEJ22
J/C
9
BP4
W-B
I25058
+B(+)
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI-951
1144 Author
: Date
:
2004 LAND CRUISER (RM1071U)
ECU Power Source Circuit
CIRCUIT DESCRIPTION
Battery positive voltage is always applied to the terminal +B of the wireless door lock ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminal +B of ECU connector and ground.
PREPARATION:
Remove the wireless door lock ECU.
CHECK:
Measure voltage between terminal +B of ECU connector and
ground.
OK:
Voltage: 10 - 14 V
OK Proceed to next circuit inspection shown in
problem symptom table (See page DI-948).
NG
DIB5V-02

DI0DV-12
DI-948
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1141 Author
: Date
:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
Perform troubleshooting of the circuit for the applicable problem symptom in the order given in the chart be-
low. Proceed to the page located for each circuit.
HINT:

Troubleshooting of the wireless door lock control system is based on the premise that the door lock
control system and theft deterrent system are operating normally. Accordingly, before troubleshooting
the wireless door lock control system, first make certain that the door lock control system and theft de-
terrent system are operating normally.

If the instruction ºProceed to next circuit inspection shown on matrix chartº is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.

If the trouble still reappears even through there are no abnormalities in any of the other circuits, check
and replace the Wireless Door Lock ECU as the last step.
SymptomSuspect AreaSee page
All function of wireless door lock control system do no operate.
1. ECU Power Source Circuit.
2. Door Courtesy Switch Circuit.
3. Door Key Lock and Unlock Switch Circuit.
4. Key Unlock Warning Switch Circuit.
5. Wireless Door Lock ECU.
6. Body ECU (Main).DI-951
DI-1062
DI-1 106
DI-1060
IN-36
IN-36
Only door unlock operation is not possible (Lock operation is pos-
sible).
1. Door Key Lock and Unlock Switch Circuit
2. Door Unlock Detection Switch Circuit
3. Wireless Door Lock ECU.
4. Body ECU (Main).DI-1 106
DI-1060
IN-36
IN-36
Only door lock operation is not possible (Unlock operation is pos-
sible).1. Door Key Lock and Unlock Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1 106
IN-36
IN-36
Only transmitter misoperation prevention function is not possible.
1. Key Unlock Warning Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1060
IN-36
IN-36
Wireless door lock function operates even when each door is
opened.1. Door Courtesy Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1062
IN-36
IN-36
Wireless door lock functions incorrectly.
(Although one door is unlocked, when the transmitter switch is
pressed, all doors unlock. )1. Door Unlock Detection Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1060
IN-36
IN-36
Wireless door lock operates, but the taillight does not respond.
1. Taillight Relay Circuit
2. Taillight Circuit
3. Wireless Door Lock ECU
4. Body ECU (Main).DI-1076
DI-1076
IN-36
IN-36

EM-84
- ENGINE MECHANICALENGINE UNIT
1657 Author
: Date
:
2004 LAND CRUISER (RM1071U)
13. CONNECT HOSES, WIRES, CONNECTORS, CLAMPS,
GROMMET AND CABLES
(a) Connect the 2 PS air hoses to the hose clamp on the No.3
RH timing belt cover.
(b) Connect the generator wire.
(c) Connect the generator connector.
(d) Connect the hose clamp for the PS air hose.
(e) Connect the PS air hose to upper intake manifold.
(f) Connect the 2 heater hoses.
(g) Connect the engine wire clamp to the bracket on the cowl
panel.
(h) Connect the engine wire grommet to the cowl panel.
(i) Connect the ground strap connector.
(j) Connect the fuel main hose and the clamps.
(k) Connect the fuel return hose and the clamp.
(l) Connect the air inlet hose to the charcoal canister.
(m) Connect the EVAP hose to the charcoal canister.
(n) Connect the engine wire to the clamp on the right fender
apron.
(o) Connect the clamp on battery negative (-) cable to the
relay box.
(p) Connect the battery negative (-) cable to the right fender
apron.
(q) Connect the battery positive (+) terminal cable.
14. CONNECT ENGINE WIRE TO CABIN
(a) Connect the 3 wire harness connectors.
(b) Install the ECM with the 3 screws.
(c) Connect the 3 connectors to the ECM.
(d) Install the glove compartment door.
(e) Install the lower No.2 panel.
15. INSTALL FAN PULLEY, FAN, FLUID COUPLING AND
GENERATOR DRIVE BELT
(a) Temporarily install the fan pulley, the fan and the fluid cou-
pling assembly with the 4 nuts.
(b) Install the generator drive belt. (See page CH-16)
(c) Tighten the 4 nuts holding the fluid coupling to the fan
bracket.
16. INSTALL RADIATOR AND FAN SHROUD
(a) Place the fan shroud in the installation position.
(b) Install the radiator with the 2 support collars, the 2 nuts
and the 2 bolts.
(c) Connect the 2 A/T oil cooler hoses to the radiator.
(d) Install the lower radiator hose.
(e) Attach the lower side of the fan shroud to the brackets of
the radiator, and install the fan shroud with the 2 bolts.
(f) Install the 2 brackets on the wire to the radiator with the
2 bolts.
(g) Install the 2 clamps on the A/C discharge tube to the
brackets on the wire with the 2 nuts.

A19477
A07247
A05127
EM-78
- ENGINE MECHANICALENGINE UNIT
1651 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(f) Disconnect the 2 heater hoses.
(g) Disconnect the engine wire clamp from the bracket on the
cowl panel.
(h) Disconnect the engine wire grommet from cowl panel.
(i) Disconnect the ground strap connector.
(j) Disconnect the fuel main hose and the clamps.
(k) Disconnect the fuel return hose and the clamp.
(l) Disconnect the air inlet hose from the charcoal canister.
(m) Disconnect the EVAP hose from the charcoal canister.
(n) Disconnect the engine wire from the clamp on the right
fender apron.
(o) Disconnect the clamp on battery negative (-) cable from
the relay box.
(p) Disconnect the battery negative (-) cable from the right
fender apron.
(q) Disconnect the battery positive (+) terminal cable.
13. REMOVE SHIFT LEVER ASSEMBLY AND TRANSFER
SHIFT LEVER ASSEMBLY
(a) Remove the transfer shift lever knob.
(b) Remove the upper console panel.
(c) Remove the shift lever assembly.
(1) Disconnect the connector.
(2) Remove the 6 bolts.
(3) Remove the nut and disconnect the transmission
control rod from the shift lever assembly.
(4) Remove the shift lever assembly.
(d) Remove the 4 bolts and the transfer shift lever boot.
(e) Remove the transfer shift lever assembly.
(1) Remove the clip, the plate washer and the wave
washer, and disconnect the transfer rod from the
shift lever.
(2) Remove the bushing.
(3) Remove the 4 bolts, the shift lever and the gasket.
14. REMOVE FRONT EXHAUST PIPES
15. REMOVE PROPELLER SHAFT (See page PR-4)
16. REMOVE STABILIZER BAR (See page SA-81)
17. DISCONNECT A/C COMPRESSOR FROM ENGINE
(a) Disconnect the A/C compressor connector.
(b) Remove the 3 bolts, and disconnect the A/C compressor
from the engine.
HINT:
Suspend the A/C compressor securely.