1998 TOYOTA LAND CRUISER navigation

I24450
I25157
I25184
- AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
AC-101
2826 Author
: Date
:
2004 LAND CRUISER (RM1071U)
5. w/ navigation system:
REMOVE INTEGRATION CONTROL PANEL
6. Disconnect the connector clamps.
(a) Remove the screw, the 2 bolts and the radio receiver
bracket RH.
(b) Remove the integration control panel from the radio re-
ceiver.
7. w/o navigation system:
REMOVE INTEGRATION CONTROL PANEL
(a) Disconnect the connector clamp.
(b) Remove the 2 screws, 4 bolts and the radio receiver
bracket LH.
(c) Disconnect the connector clamp.
(d) Remove the 2 screws, 4 bolts and the radio receiver
bracket RH.
(e) Remove the integration control panel.

BE4331
I10058
Radio Receiver Assembly Power Amplifier DVD Auto Changer
- BODY ELECTRICALAUDIO SYSTEM
BE-127
2500 Author
: Date
:
2004 LAND CRUISER (RM1071U)
7. CD player/disc cleaning:
MAINTENANCE
If the disc gets dirty, clean the disc by wiping the surface from
the center to outside in the radial directions with a soft cloth.
NOTICE:
Do not use a conventional record cleaner or anti-static pre-
servative.
8. OUTLINE OF AVC-LAN
(a) What is AVC-LAN?
AVC-LAN is the abbreviation, which stands for Audio Visual Communication-Local Area Network.
This is a unified standard co-developed by 6 audio manufactures associated with Toyota Motor Corpo-
ration.
The Unified standard covers signals, such as audio signal, visual signal, signal for switch indication
and communication signal. Radio receiver assembly and RSA (Rear Seat Audio) panel have a resis-
tance (60 - 80 W) required for communication.
(b) Objectives
Recently the car audio system has been rapidly developed and functions have been changed drasti-
cally. The conventional system has been switched to the multi-media type such as a navigation sys-
tem. At the same time the level of customers needs to audio system has been upgraded. This lies be-
hind this standardization.
The concrete objectives are explained below.
(1) When products by different manufactures were combined together, there used to be a case that
malfunction occurred such as sound did not come out. This problem has been resolved by stan-
dardization of signals.
(2) Various types of after market products have been able to add or replace freely.
(3) Because of the above (2), each manufacture has become able to concentrate on developing
products in their strongest field. This has enabled many types of products provided inexpensive-
ly.
(4) In general, a new product developed by one particular manufacture could not be used due to
a lack of compatibility with other manufactures products. Because of this new standard, users
can enjoy many compatible products from different manufacture anytime they went.
(c) The above descriptions are the objectives to introduce AVC-LAN. By this standardization, develop-
ment of new products will no longer cause systematic errors.

I25240
AVC-LAN:
Main AVC-LAN
Power Amplifier (*)
RSA Panel Radio Receiver Assembly DVD Auto Chager
*: Except JBL System BE-128
- BODY ELECTRICALAUDIO SYSTEM
2501 Author
: Date
:
2004 LAND CRUISER (RM1071U)
HINT:

When +B short or GND short is detected in AVC-LAN circuit, communication stops. And audio system
does not function normally.

When audio system is not equipped with a navigation system, audio head unit is the master unit. When
audio system is equipped with a navigation system, multi-display is the master unit.

This system has 2 kinds of AVC-LAN, Main AVC-LAN and Sub AVC-LAN.

RSA panel works as a master unit in the Sub AVC-LAN, but not in the Main AVC-LAN.

The car audio system using AVC-LAN circuit has a diagnosis function.
(w/ Navigation system (see pageDI-1263)

Each product has its own specified numbers called physical address. Numbers are also allotted to
each function in one product, which are called logical address.

Physical address: 190 Radio receiver assembly
Diagnosis item
ROM Error
Absence of
MasterDiagnosis contentCountermeasure and
inspected parts
Error is detected in internal ROM. Logical address
01
(Communication
Control)
01 *2
(Communication
Control)Component in which this code is re-
corded has been disconnected from
system with ignition in ACC or ON.
Or, when this code was recorded, ra-
dio receiver assembly was discon-
nected.
Check harness for power supply
system of radio receiver assembly.

Check harness for communica-
tion system of radio receiver as-
sembly.
DTC
21
D6Replace radio receiver assembly.
RAM Error Error is detected in internal RAM. 01
(Communication
Control)22Replace radio receiver assembly.
No Response
to Connection
Check 01 *3
(Communication
Control)Component shown by auxiliary code
is or had been disconnected from
system after engine start.
D9
Check harness for power supply
system of component shown by
auxiliary code.

Check harness for communica-
tion system of component shown by
auxiliary code. D8
Last Mode Error 01 *2
(Communication
Control)Component operated (sounds and/
or images were provided) before en-
gine stop is or has been discon-
nected with ignition switch in ACC or
ON.
Check harness for power supply
system of component shown by
auxiliary code.

Check harness for communica-
tion system of component shown by
auxiliary code. D9
No Response
to ON/OFF
InstructionNo response is identified when
changing mode (audio and visual
mode change). Detected when
sound and picture does not change
by button operation. DA 01
(Communication
Control)
Check harness for power supply
of component shown by auxiliary
code.

Check harness for communica-
tion system of component shown by
auxiliary code.

If error occurs again, replace
component shown by auxiliary
code.
HINT:
*1: Even if no failure is detected, it may be stored depending on the battery condition or voltage for starting an engine.
*2: It may be stored when the engine key is turned 1 min. angain after engine start.
*3: It may be stored when the engine key is turned again after engine start.
*4: When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition
switch in ACC or ON, this code is stored.
Mode Status
Error DB 01 *2
(Communication
Control)Dual alarm is detected.
Check harness for power supply
of component shown by auxiliary
code.

Check harness for communica-
tion system of component shown by
auxiliary code.
- BODY ELECTRICALAUDIO SYSTEM
BE-141
2514 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3. DIAGNOSIS CODE LIST
w/ Navigation system (See page)

BE2EE-01
I25790
w/o Navigation System:
w/ Navigation System:
ABC
I01200
2 1
35
2 5
1 3
- BODY ELECTRICALDEFOGGER SYSTEM
BE-75
2448 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. INSPECT DEFOGGER SWITCH CIRCUIT
Disconnect the connector from the panel switch and inspect the
connector on wire harness side, as shown in the chart.
w/ Navigation:
Tester connectionConditionSpecified condition
B12 (GND) - GroundConstantContinuity
B11 (+B) - GroundConstantBattery positive voltage
B22 (IG) - GroundIgnition switch LOCK or ACCNo voltage
B22 (IG) - GroundIgnition switch ONBattery positive voltage
A10 (RDFGR) - GroundConstantBattery positive voltage
w/o Navigation:
Tester connectionConditionSpecified condition
16 (GND) - GroundConstantContinuity
8 (IG) - GroundIgnition switch LOCK or ACCNo voltage
8 (IG) - GroundIgnition switch ONBattery positive voltage
2 (DEFC) - GroundConstantBattery positive voltage
If the circuit is not as specified, replace the switch.
2. INSPECT DEFOGGER RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 - 2Continuity
Apply B+ between
terminals 1 and 2.3 - 5Continuity
If continuity is not as specified, replace the relay.

BE2EE-01
I25790
w/o Navigation System:
w/ Navigation System:
ABC
I01200
2 1
35
2 5
1 3
- BODY ELECTRICALDEFOGGER SYSTEM
BE-75
2448 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. INSPECT DEFOGGER SWITCH CIRCUIT
Disconnect the connector from the panel switch and inspect the
connector on wire harness side, as shown in the chart.
w/ Navigation:
Tester connectionConditionSpecified condition
B12 (GND) - GroundConstantContinuity
B11 (+B) - GroundConstantBattery positive voltage
B22 (IG) - GroundIgnition switch LOCK or ACCNo voltage
B22 (IG) - GroundIgnition switch ONBattery positive voltage
A10 (RDFGR) - GroundConstantBattery positive voltage
w/o Navigation:
Tester connectionConditionSpecified condition
16 (GND) - GroundConstantContinuity
8 (IG) - GroundIgnition switch LOCK or ACCNo voltage
8 (IG) - GroundIgnition switch ONBattery positive voltage
2 (DEFC) - GroundConstantBattery positive voltage
If the circuit is not as specified, replace the switch.
2. INSPECT DEFOGGER RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 - 2Continuity
Apply B+ between
terminals 1 and 2.3 - 5Continuity
If continuity is not as specified, replace the relay.

BE2E1-01
1 MULTI DISPLAY DOES NOT OPERATE
I25794
10
9
14 16
8ACC Fuse
ECU-B1 Fuse
Body Control ECU
and Transponder
ECU A/C Contlor Assy
Ground ACC
+B
SECURITYA/C TEMP
GND Multi Display Assembly
11
ECU-IG Fuse IG
1
2 3
UART+
UART-TC
Combination Meter Body Control ECU
Combination Meter BE-178
- BODY ELECTRICALMULTI DISPLAY
2551 Author
: Date
:
2004 LAND CRUISER (RM1071U)
MULTI DISPLAY
TROUBLESHOOTING
HINT:

Troubleshoot the Multi Display according to the table below.

w/ Navigation System (See PageDI-1 151)
TroubleshootingNo.
Multi disolay does not operate.1
Clock loses or gains time.2
Drive monitor function malfunction.3
Outer temperature display malfunction.4
Security indicator does not light up.(See page DI-953)
± 1.5 seconds / day
1. TROUBLESHOOTING NO.1
(a) Check that the battery positive voltage is 10 - 16 V.
If voltage is not as specified, replace the battery.
(b) Check that the ECU-IG, ECU-B and ACC fuses are not
blown.
If the fuse is blown, replace the fuse and check for short.
(c) Troubleshoot the multi display as follows.
HINT:
Inspect the connector on the wire harness side.

I24662
1 2
34A
Circuit Plate
(Garage Door Opener Switch)Main Circuit Plate
CB
G
E
D
BE-184
- BODY ELECTRICALOVERHEAD JUNCTION BLOCK
2557 Author
: Date
:
2004 LAND CRUISER (RM1071U)Parts No.
Connector nameRelated to systems
A, BVehicle wire harness connector-
COverhead console illumination connector (Unbar)Overhead junction block illumination
DGarage door opener ECU connectorGarage door opener system
EGarage door opener ECU connectorGarage door opener system
GVoice recognition connectorNavigation system
1Garage door opener substrate flat harness connectorGarage door opener system
2Garage door opener switchGarage door opener system
3Garage door opener LED (Green)Garage door opener system
4Garage door opener operate indicator LED (Red)Garage door opener system