TOYOTA LAND CRUISER 1998 Factory Repair Manual

I25541
1 2 3 4 5 6 7
8 9 10 11 12 13 14 15 16
BE2EA-01
I25540
- BODY ELECTRICALAUDIO SYSTEM
BE-171
2544 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. INSPECT POWER AMPLIFIER CIRCUIT
Disconnect the connector from power amplifier and inspect the
connector on the wire harness side.
Tester connectionConditionSpecified condition
12 - GroundConstantContinuity
13 - GroundConstantContinuity
7 - GroundConstantBattery voltage
16 - GroundConstantBattery voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.
2. INSPECT REAR SEAT AUDIO CIRCUIT
Disconnect the connector from RSA controller and inspect the
connector on the wire harness side.
Tester connectionConditionSpecified condition
17 - GroundConstantContinuity
24 - GroundIgnition switch LOCK and radio switch ONNo voltage
24 - GroundIgnition switch ACC or ON and radio switch ONBattery voltage
12 - GroundConstantBattery voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.

I25542
I25539
Connector ºAº
Connector ºBº
Connector ºCº BE-172
- BODY ELECTRICALAUDIO SYSTEM
2545 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3. INSPECT DVD CHANGER CIRCUIT
Disconnect the connector from DVD changer and inspect the
connector on the wire harness side.
Tester connectionConditionSpecified condition
20 - GroundConstantContinuity
1 - GroundIgnition switch LOCKNo voltage
1 - GroundIgnition switch ACC or ONBattery voltage
10 - GroundConstantBattery voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.
4. INSPECT RADIO RECEIVER ASSEMBLY CIRCUIT
Disconnect the connectors from the radio receiver assembly,
and inspect the connector on the wire harness side.
Tester connectionConditionSpecified condition
A20 - GroundConstantContinuity
A1 - GroundConstantBattery voltage
A11 - GroundIgnition switch LOCKNo voltage
A11 - GroundIgnition switch ACC or ONBattery voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.

I24857EAU AU1AU2
- BODY ELECTRICALAUDIO SYSTEM
BE-173
2546 Author
: Date
:
2004 LAND CRUISER (RM1071U)
HINT:
Check the wire harness between radio receiver assembly and
the CD auto changer, between radio receiver assembly and
power amplifier.
5. INSPECT STEERING PAD SWITCH CIRCUIT
Disconnect the connectors from the steering pad switch, and in-
spect the connector on the wire harness side.
Tester connectionConditionSpecified condition
AU1 - EAUDo not switch positionApprox. 100 kW
AU1 - EAUSEEK+ switch: push0 W
AU1 - EAUSEEK- switch: pushApprox. 0.3 W
AU1 - EAUVOL+ switch: pushApprox. 1k W
AU1 - EAUVOL- switch: pushApprox. 3.2 kW
AU2 - EAUDo not switch positionApprox. 100 kW
AU2 - EAUMODE switch: push0 W
If the circuit is not as specified, inspect the circuits connected
to other parts.

BE0GD-23
I25523
Cowl SIde J/B RH

RADIO Fuse
TweeterRadio Assembly
Ignition Switch
Engine Room R/B

AMP Fuse
Woofer SpeakersSpeakers
Power Amplifier Steering Pad Switch
RSA
Antenna Assembly

Motor Antenna
Cowl Side J/B LH

ECU IG1 Fuse

IG Fuse
BE-170
- BODY ELECTRICALAUDIO SYSTEM
2543 Author
: Date
:
2004 LAND CRUISER (RM1071U)
LOCATION

BE2E9-01
I25054
ºTUNE DOWNº
Switchº4chº Switchº5chº Switch
º6chº Switch
ºTUNE UPº
Switch º1chº Switch
º2chº Switchº3chº Switch
ºDISCº Switch
- BODY ELECTRICALAUDIO SYSTEM
BE-129
2502 Author
: Date
:
2004 LAND CRUISER (RM1071U)
TROUBLESHOOTING
1. DIAGNOSIS FUNCTION (Main AVC-LAN)
(a) Diagnosis start-up
For shifting to diagnosis mode, turn the ignition switch ON and push the ºDISCº switch 3 times while
pressing ºch1º and ºch6º switches.
HINT:
To exit the diagnosis mode, push the ºDISCº switch for 1.7 sec. or turn the ignition switch to ACC or OFF.
(b) Element check mode
After the diagnosis start-up, the system enters the element check mode. Check that the all elements
light up.
HINT:
By pressing the ºTUNE UPº switch, the system enters the ºService Check Modeº.
(c) Switch check mode
(1) Element check mode is started at the same time with the switch check mode.
(2) Check that there is a beep sound when any switch is pressed.
HINT:
By pressing ºTUNE UPº switch, the system enters the ºService Check Modeº.

I25054
ºTUNE DOWNº
Switchº4chº Switchº5chº Switch
º6chº Switch
ºTUNE UPº
Switch º1chº Switch
º2chº Switchº3chº Switch
ºDISCº Switch
BE-130
- BODY ELECTRICALAUDIO SYSTEM
2503 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(d) Service check mode
(1) After the element check and switch check is completed, the system enters service check mode
when ºTUNE UPº switch is pressed.
(2) Error codes over the tuner and connected equipments are displayed on the screen of the tuner.
Results for each check are displayed as follows:
good:
No DTC is detected for both ºSystem Check Confirmationº and ºDiagnosis Memory Re-
sponseº.
nCon:
The component does not respond to the ºDiagnosis On Instructionº command.
Applicable to only the system where connected components are limited to be used.
ECHn:
Application of new version has been confirmed by the ºDiagnosis On Checkº, and there
is one or more DTC which indicates ºReplacementº in the ºSystem Check Result Re-
sponseº or ºDiagnosis Memory Responseº.
CHEC:
Application of new version has been confirmed by the ºDiagnosis On Checkº, and there
is no DTC which indicates ºReplacementº in the ºSystem Check Result Responseº or
ºDiagnosis Memory Responseº, but one or more DTC which indicates ºCheckº is identified.
Old:
Application of old version is confirmed by the ºDiagnosis On Checkº, and DTC is identified
in the ºSystem Check Result Responseº or ºDiagnosis Memory Responseº.
nrES:
No response is identified to the ºSystem Check Start Instructionº and ºRequest for System
Check Resultº commands.
HINT:
Check the present and past condition of components by performing the System Check and collecting
stored DTC memories.
Check results are displayed as one of the following six indications: ºgoodº, ºECHnº, ºCHECº,ºnConº,
ºOldº or ºnrESº.

Normal Mode
Service Check ModePhysical Address (When checking,
P1F4 is blinking)
 A long beep (3 sec.)  3 beeps
Memory Clear ModeAfter 3 sec.
P1F4
ECHn
CLr Example:
Connection parts ( physical address): Radio receiver (P190), RSA ECU (P1F4), DVD player (P1A0)
Turn ignition switch ON.
Push the ºDISCº switch 3 times
while pressing ºch1º and ºch6º
switches.
HINT:
To exit diagnosis mode, press
the ºDISCº switch for 1.7 sec. or
turn ignition switch to ACC or
OFF
ºECHnº Detail
Display Mode
(Refer to (f))
CHEC
ºCHECº Detail
Display Mode
(Refer to (g))
Physical AddressP190
Physical AddressP1A0
Old
ºOldº Detail
Display Mode
(Refer to (h))
Result (Replacing)
Result (Check)
Result (Old)
 After the memory is cleared, only the physical address is displayed cyclically.TUNE UP
TUNE UP
TUNE UP
TUNE UP TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE UP
ch5 (1.7 sec.)
: Indicates a switch operation
ch2
ch3
ch2
ch3
ch2
ch3
 When re-checking (ch1 switch is pressed) in that condition, the result is also
displayed as shown above.
Element check mode
Switch Check Mode
TUNE UP
- BODY ELECTRICALAUDIO SYSTEM
BE-131
2504 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(e) Display Screen for Service Check.

Service Check Mode
ºECHnº Detail Display Mode
Physical Address of Component
Logical Address
Number of Occurrence (*2)
DTC (Refer to diagnostic
trouble code chart)
Logical Address
Connection Check Code (*2)
Continued if more than one DTC is identified.Details for 1st
Component
Details for 2nd
Component ECHn
P1F4
ch2ch3
TUNE UPTUNE DOWN
P1F4
SyS
COdE
DTC (Refer to diagnostic
trouble code chart)
Auxiliary Code (*1)
ch5 (Along)
CLr
: Indicates a switch operationTUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE UPTUNE DOWN
TUNE UP
Detail code is displayed
cyclically.TUNE UP
TUNE UP
TUNE UP
TUNE UP
(*1): Some diagnostic codes
may not be displayed. In this
case, º- - -º displayed.
(*2): Some diagnostic codes
may not be displayed. In this
case, º- -º displayed.1L
**
1d21
2L**
2dD7
2P***
2n**
2c**
BE-132
- BODY ELECTRICALAUDIO SYSTEM
2505 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(f) ºECHnº Detail Display Mode Screen

Service Check Mode
ºCHECº Detail Display Mode
Physical Address of Component
Logical Address
Number of Occurrence (*2)
DTC (Refer to diagnostic
trouble code chart)
Continued if more than one DTC is identified.Details for 1st
Component
Details for 2nd
Component CHEC
P190
ch2ch3
TUNE UPTUNE DOWN
P190
COde
DTC (Refer to diagnostic
trouble code chart)
ch5 (Along)
CLr
: Indicates a switch operationAuxiliary Code (*1)
Connection Check Code (*2)
Logical Address
Connection Check Code (*2)
TUNE UP
TUNE DOWN
Detail code is displayed
cyclically.
Auxiliary Code (*1)
Number of Occurrence (*2)
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE UPTUNE DOWN
TUNE UP
1L**
1dE4
2L**
2d43
2P***
2n**
1P***
1n**
2c**
1c**
(*1): Some diagnostic codes
may not be displayed. In this
case, º- - -º displayed.
(*2): Some diagnostic codes
may not be displayed. In this
case, º- -º displayed.
- BODY ELECTRICALAUDIO SYSTEM
BE-133
2506 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(g) ºCHECº Detail Display Mode Screen

Service Check Mode
ºOldº Detail Display Mode
Physical Address of Component
Logical Address
Number of Occurrence (*2)
DTC (Refer to diagnostic
trouble code chart)
Continued if more than one DTC is identified.Details for 1st
Component
Details for 2nd
Component Old
P1A0
ch2ch3
TUNE UPTUNE DOWN
P1A0
COdE
DTC (Refer to diagnostic
trouble code chart)
ch5 (Along)
CLr
: Indicates a switch operationAuxiliary Code (*1)
Connection Check Code (*2)
Logical Address
Connection Check Code (*2)
TUNE UP
TUNE DOWN
Detail code is displayed
cyclically.
Auxiliary Code (*1)
Number of Occurrence (*2)
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE UP
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE DOWN
TUNE UPTUNE DOWN
TUNE UP
1L**
1dd4
2L**
2d43
2P***
2n**
1P***
1n**
2c
1c- -
- - (*1): Some diagnostic codes
may not be displayed. In this
case, º- - -º displayed.
(*2): Some diagnostic codes
may not be displayed. In this
case, º- -º displayed. BE-134
- BODY ELECTRICALAUDIO SYSTEM
2507 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(h) ºOldº Detail Display Mode Screen