Lexus LS400 2000 User Manual

BE–1

–BODY ELECTRICAL BODY ELECTRICAL SYSTEM

BODY ELECTRICAL SYSTEM

BE0DC–01

PRECAUTION

Take care to observe the following precautions when performing inspections or removal and replacement of body electrical related parts.

1. SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

The Lexus LS400 is equipped with an SRS (Supplemental Restraint System) such as the driver airbag and front passenger airbag. failure to carry out service operation in the correct sequence could cause the SRS to unexpectedly deployed during servicing, possibly leading to a serious accident. Before servicing (including removal or installation of parts, inspection or replacement), be sure to read the precautionary codices in the RS section.

2. COMBINATION METER SYSTEM

The cold cathode tube connectors (Connectors ”N”, ”P” and ”Q”) in the combination meter are charged with high voltage AC current when power is supplied, so do not touch them when they are charged.

3. MICRO COMPUTER PRESET DRIVING POSITION SYSTEM Power Seat Control System Power Mirror Control System Power Tilt and Telescopic Steering System

If the battery negative (–) terminal is disconnected, the preset driving positions stored in memory are erased, so be sure to note the positions and reset them after the battery terminal is reconnected.

4. AUDIO SYSTEM

! If the battery negative (–) terminal is disconnected, the preset AM, FM 1 and FM 2 stations stored in

memory are erased, so be sure to not the stations and reset them after the battery terminal is reconnected.

! If the battery negative (–) terminal is disconnected, the ”ANTI–THEFT SYSTEM” will operate when the

terminal is reconnected, but the radio, tape player and CD player will not operate. Be sure to input the correct ID number so that the radio, tape player and CD player can be operated again.

2000 LEXUS LS400 (RM717U)

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BE–2

–BODY ELECTRICAL BODY ELECTRICAL SYSTEM

5. MOBILE COMMUNICATION SYSTEM

If the vehicle is equipped with a mobile communication system, refer to precautions in the IN section.

6. LIGHTING SYSTEM

! Halogen bulbs have pressurized gas inside and require special handling.

They can burst or scatter if scratched or dropped. Hold a bulb only by its plastic or metal case. Don’t touch the glass part of a bulb with bare hands.

! When high voltage socket of discharge headlight is touched with the light control switch HEAD, high

voltage of 20,000 V is momentarily generated. This might lead to a serious accident.

! Never connect the tester to the high voltage socket of discharge headlight for measurement, as this

leads to a serious because of high voltage.

! When performing operation related to the discharge headlight, make sure to do it in the place with no

water of rain to prevent electric shock, with light control switch OFF, battery terminal removed, connector of light control ECU disconnected.

! When performing operation related to the discharge headlight, make sure to do it after assembling has

been completely over and never light up without a bulb installed.

! Do not light up the discharge headlight using another power source except vehicle’s. ! When there is a defect on the discharge headlight or any shock has been applied to it, replace the light

with a new one. Even if the light operates normally, there is a possibility that the fail–safe function not works.

2000 LEXUS LS400 (RM717U)

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N13360

–

BE0DB–01

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 there is no continuity between terminal 6 of the

connector and body ground. (g) Check that there is continuity 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.

I03247

(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.

I03248

3. INSPECT HORN RELAY CONTINUITY

Condition Te s te r c o nn e c t i on Specified condition

Constant 1 – 2 Continuity

Z08505

Apply B+ between

terminals 1 and 2.

2 – 3 Continuity

If continuity is not as specified, replace the relay.

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HORN SYSTEM

LOCATION

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–

BE0DA–01

Engine Room Junction Block

! Horn Relay ! HORN Fuse

Horn

Horn Switch

I03238

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BE–254

–

BE0D9–01

INSPECTION

INSPECTION TRANSPONDER KEY COIL CONTINUITY

Check that there is continuity between terminal 1 and 2. If continuity is not as specified, replace the coil.

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LOCATION

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–

BE0D8–01

Transponder Key Coil

ECM

Transponder Key Amplifier

I03461

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BE–244

–BODY ELECTRICAL ENGINE IMMOBILISER SYSTEM

ENGINE IMMOBILISER SYSTEM

BE0D7–01

REGISTRATION PROCEDURE

1. KEY REGISTRATION IN AUTOMATIC REGISTRATION MODE

(a) Registration of a new transponder key. HINT:

! This must be done when you install a new ECM. ! The new ECM is on the automatic key code registration mode. The already fixed number of key codes

for this ECM can be registered. On this type of vehicle, up to 4 key codes can be registered.

! In the automatic registration mode, the last key registered becomes sub–key.

START

Insert the key in the key cylinder.

Under registration

Registration completion

Remove the key.

Security indicator blinks until the first key is inserted. The indicator lights up after the key registration.

Security Indicator ON

Security Indicator OFF

Yes

2000 LEXUS LS400 (RM717U)

Will you register the next key?

END

Security Indicator ON (After the last key (sub–key) has been registered, the indicator goes off.)

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–BODY ELECTRICAL ENGINE IMMOBILISER SYSTEM

HINT:

! When a key is not inserted in the key cylinder on the automatic registration mode, the security indicator

always lights on.

! When the immobiliser system operates normally and the key is pull out, the security indicator blinks. ! When key code registration could not be performed on the automatic registration mode, code 2–1 is

output from the security indicator and when inserting the already registered key, code 2–2 is output.

Blinks

1.2 Sec.

0.8 Sec.

0.25 Sec.

0.25 Sec. 0.5 Sec.

Code 2–1 Code2–2

1 Sec.

0.25 Sec.

0.25 Sec.0.5 Sec.

1 Sec.

(b) Automatic registration mode completion

If completing the mode forcibly when more than 1 key code have been registered on the automatic registration mode, perform the following procedures. After 1 more key code have been registered with master key, perform step (1) or (2) without pulling the key out or inserting the already registered key.

(1) Depress and release brake pedal 5 times or more within 15 sec. (2) With the LEXUS hand–held tester, require automatic registration mode completion.

2000 LEXUS LS400 (RM717U)

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BE–246

–BODY ELECTRICAL ENGINE IMMOBILISER SYSTEM

2. KEY REGISTRATION OF PROCEDURE NEW MASTER KEY AND NEW SUB–KEY ON THIS IS DESCRIBED BELOW

HINT: Key registration of new master key and new sub–key on this vehicle when new ignition cylinder and key set, and new lock cylinder set including ignition key cylinder are installed.

(a) Removing wire–less and immobiliser module from origi-

nal master key.

I04311

I04312

(b) Masking new master key.

After replacing and installing new ignition cylinder, install removed original modules into new 2 key housing as supply parts.

NOTICE: In case of replacing with ignition cylinder and key set, door locks cannot be opened by new ignition keys. Therefore, to avoid any trouble caused by empty battery of transmitter of new ignition key, please bring the original key while driving.

2000 LEXUS LS400 (RM717U)

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–BODY ELECTRICAL ENGINE IMMOBILISER SYSTEM

3. REGISTRATION OF ADDITIONAL MASTER KEY

There are 2 ways for registration of additional master key, one way is depressing brake pedal and acceleration pedal and the other way is using LEXUS hand–held tester. HINT:

! It is possible to register up to 7 master key codes including the already registered key code. ! When any operation time described below is over, registration mode completes. ! When the next procedure is performed while the timer is working, the timer completes counting time,

then next timer starts.

! When replacing ”Ignition Cylinder Key Set” or ”Lock Cylinder Set” and register according to the follow-

ing procedure using the original master key. However, after the registration of the additional master key, as the original master key and the original sub–key is not necessary any more, so erase registration of those key codes. (1) Depressing brake pedal and acceleration pedal:

Insert already registered master key in the key cylinder

Within 10 sec.

Depress and release the acceleration pedal 5 times.

Depress and release the brake pedal 6 times, and remove the master key.

Insert key to be registered in key cylinder.

Depress and release the acceleration pedal 1 time. (Security indicator blinks)

After 60 sec. additional master key is registered. (Security indicator is OFF)

Within 15 sec.

Within 20 sec.

Within 10 sec.

2000 LEXUS LS400 (RM717U)

Yes

The registration mode completes when pulling out the key and depressing and releasing the brake pedal once or more within 10 secs. after indicator has been off or 10 sec. have passed.

Will you register the next key?

2110Author!: Date!:

BE–248

(2) Using LEXUS hand–held tester:

Insert already registered master key in the key cylinder.

Using LEXUS hand–held tester select master key registration.

Remove the master key.

–BODY ELECTRICAL ENGINE IMMOBILISER SYSTEM

Within 120 sec.

Within 20 sec.

Within 10 sec.

Insert key to be registered in key cylinder. (Security indicator blinks)

After 60 sec., additional master key is registered. (Security indicator OFF)

Yes

Will you register the next key?

The registration mode completes when pulling out the key and depressing and releasing the brake pedal once or more within 10 sec. after indicator has been off or 10 sec. have passed.

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–BODY ELECTRICAL ENGINE IMMOBILISER SYSTEM

4. REGISTRATION OF ADDITIONAL SUB–KEY

There are 2 ways for registration of additional sub–key, one way is depressing brake pedal and acceleration pedal and the other way is using LEXUS hand–held tester. HINT:

! It is possible to register up to 3 sub–key codes including the already registered key code. ! When any operation time described below is over, registration mode completes. ! When the next procedure is performed while the timer is working, the timer completes counting time,

then next timer starts. (1) Depressing brake pedal and acceleration pedal:

Insert already registered master key in the key cylinder

Within 10 sec.

Depress and release the acceleration pedal 4 times.

Depress and release the brake pedal 5 times, and remove the master key.

Insert key to be registered in key cylinder.

Depress and release the acceleration pedal 1 time. (Security indicator blinks)

After 60 sec. additional sub–key is registered. (Security indicator is OFF)

Within 15 sec.

Within 20 sec.

Within 10 sec.

2000 LEXUS LS400 (RM717U)

Yes

The registration mode completes when pulling out the key and depressing and releasing the brake pedal once or more within 10 sec. after indicator has been off or 10 sec. have passed.

Will you register the next key?

2112Author!: Date!:

BE–250

(2) Using LEXUS hand–held tester:

Insert already registered master key in the key cylinder.

Using LEXUS hand–held tester select sub–key registration.

Remove the master key.

–BODY ELECTRICAL ENGINE IMMOBILISER SYSTEM

Within 120 sec.

Within 20 sec.

Within 10 sec.

Insert key to be registered in key cylinder. (Security indicator blinks)

After 60 sec., additional master key is registered. (Security indicator OFF)

Yes

Will you register the next key?

The registration mode completes when pulling out the key and depressing and releasing the brake pedal once or more within 10 sec. after indicator has been off or 10 sec. have passed.

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–BODY ELECTRICAL ENGINE IMMOBILISER SYSTEM

5. ERASURE OF TRANSPONDER KEY CODE

There are 2 ways for erasure of transponder key code, one way is depressing brake pedal and acceleration pedal and the other way is using LEXUS hand–held tester.

NOTICE: Delete all other master and sub–key codes leaving the master key code to use the operation. When using the key which was used before deletion, it is necessary to register the code again.

HINT:

! When any operation time described below is over, registration mode completes. ! When the next procedure is performed while the timer is working, the timer completes counting time,

then next timer starts. (1) Depressing brake pedal and acceleration pedal:

1. Insert master key in the key cylinder.

Within 15 sec.

2. Depress and release the acceleration pedal 6 times.

3. Depress and release the brake pedal 7 times.

4. Remove the master key.

5. Leave the vehicle more than 20 sec. without any operation.

Within 20 sec.

Within 10 sec.

HINT:

If the key cannot be pulled out within 30 sec. from the first brake depression in the step 3, the key code deletion is canceled.

2000 LEXUS LS400 (RM717U)

END

(Key code erased)

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(2) Using LEXUS hand–held tester:

1. Insert master key in the key cylinder.

2. Require key code deletion from hand–held tester. (Security indicator blinks)

3. Remove the master key.

–BODY ELECTRICAL ENGINE IMMOBILISER SYSTEM

Within 120 sec.

Within 10 sec.

END (Key code erased)

HINT:

When the key cannot be pulled out in the step 3, key code deletion is canceled. (Security indicator is OFF.)

2000 LEXUS LS400 (RM717U)

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–

INSTALLATION

1. INSTALL GARAGE DOOR OPENER

(a) Connect the wire harness to the terminal 4 and 5. (b) Install the 3 screws.

2. INSTALL FRONT PERSONAL LIGHT

(a) Connect the 2 connectors. (b) Install the 3 screws.

3. INSTALL FRONT PERSONAL LIGHT LENS

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I03241

I03242

BE–241

–BODY ELECTRICAL GARAGE DOOR OPENER SYSTEM

BE0D5–01

INSPECTION

1. INSPECT GARAGE DOOR OPENER

Press the switch and check that each LED (red) lights up. Even if only one switch is found not to light up, replace it.

2. INSPECT GARAGE DOOR OPENER REGISTRATION AND TRANSMITTING

HINT: Use the home link tester made by KENT MORE for this test. As it is necessary to record the code of the hand held transmitter, customer’s code will be erased. When the inspection completes, please register the customer’s again. (a) Check that the code of hand held transmitter for inspec-

tion can be recorded. (See page

If the code can not be registered, replace garage door opener.

2000 LEXUS LS400 (RM717U)

(b) Press the switch which an inspection code has been reg-

istered for and check that LED (green) of the home link tester lights up.

If the LED (green) does not light up, replace the garage door opener.

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–BODY ELECTRICAL GARAGE DOOR OPENER SYSTEM

Wire Harness Side

3. INSPECT GARAGE DOOR OPENER CIRCUIT

Disconnect the connector from the switch and inspect the connector on the wire harness side, as shown.

I03432

Te s te r c o nn e c t i on Condition Specified condition

5 – Ground Constant Continuity

4 – Ground Constant Battery positive voltage

2000 LEXUS LS400 (RM717U)

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I03419

–

BE0D4–01

REMOVAL

1. REMOVE FRONT PERSONAL LIGHT LENS

2. REMOVE FRONT PERSONAL LIGHT

(a) Remove the 3 screws. (b) Disconnect the 2 connectors.

3. REMOVE GARAGE DOOR OPENER

(a) Remove the 3 screws. (b) Remove the garage door opener connector from the per-

sonal light.

the terminals out from the rear.

HINT: Use a small screw driver.

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LOCATION

BE–239

–

BE0D3–01

Garage Door Opener

I03403

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–BODY ELECTRICAL GARAGE DOOR OPENER SYSTEM

GARAGE DOOR OPENER SYSTEM

BE0D2–01

REGISTRATION PROCEDURE

1. NEW CODE REGISTRATION

NOTICE:

! If pressing the switch of the original transmitter to

! When registering the transmitter codes such as for

garage or gate, check that there is nobody around those places then register.

(a) Press the switch for the item to be registered for 20 se-

conds

HINT: When transferring to registration mode, LED (red) blinks in 1 Hz cycle.

(b) In the condition of (a), bring the original transmitter to with-

in 1–inch area around the garage door opener and press the switch. (code transmitting).

HINT: When code registration completes correctly, LED (red) blinks in

5.6 Hz cycle.

I03243

2000 LEXUS LS400 (RM717U)

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–BODY ELECTRICAL GARAGE DOOR OPENER SYSTEM

New code registration timing chart

BE–237

GARAGE DOOR OPENER SWITCH

LEARN MODE

LED OPERATION

ORIGINAL TRANSMITTER

PRESSED

RELEASE

ENTER

EXIT

OFF

20 sec

LED flashes at a rate of 1 Hz

LED flashes at a rate of 5.6 Hz

I03487

If a code can not be registered, observe the following conditions. HINT:

! If the battery of original transmitter is consumed. ! Press the switch of the transmitter repeatedly in registra-

tion mode, as some transmitters stop transmitting for 1 to 2 seconds.

! This system is not applicable to the garage door opener

which had been made before 1982.

2. CODE DELETION

(a) Press the switches at both ends of garage door opener

simultaneously for 20 seconds.

HINT: When transferring to deletion mode, LED (red) blinks in 6 Hz cycle. (b) When releasing the switch within 10 seconds after trans-

ferring to deletion mode, all the registered codes will be erased.

HINT: Press the switch until blinking in 6 Hz cycle stops, so that the default code for check is set.

2000 LEXUS LS400 (RM717U)

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BE–238

–BODY ELECTRICAL GARAGE DOOR OPENER SYSTEM

Code deletion timing chart

GARAGE DOOR OPENER SWITCH (Switch at both end)

CLEAR/DEFAULT MODE

LED OPERATION

PRESSED

RELEASE

OFF

Enter erase mode to erase all 3 channels

20 SEC

10 SEC

LED flashes at a rate of 6 HZ

LOAD DEFAULT

I03488

2000 LEXUS LS400 (RM717U)

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BE–234

–BODY ELECTRICAL CLOCK

1. PROBLEM No.1

1 CLOCK WILL NOT OPERATE

e–6–1

GND

ACC

I03486

CLOCK

BE0D1–02

TROUBLESHOOTING

HINT:

Problem No.

Clock will not operate 1

Clock loses or gains time 2

± 1.5 seconds / da

(a) Turn the ignition switch ON. (b) Check that the battery positive voltage is 10 – 16 V. If voltage is not as specified, replace the battery. (c) Check that the DOME FR, GAUGE and FR CIG fuses in

not below.

If the fuse is blown, replace the fuse and check for short. (d) Troubleshoot the clock as follows. HINT: Inspect the connector on the wire harness side.

Is there battery positive voltage between terminal +B and body ground?

Yes

Is there battery positive voltage between terminal IG and body ground?

Yes

Is there battery positive voltage between terminal ACC and body ground?

Yes

Is there continuity battery terminal GND and body ground?

Yes

Is there battery positive voltage between terminal ILL and body ground when rheostat knob is turned to any position except fully clockwise? (Taillight switch ON)

Yes

Open or short circuit in wire harness between terminal +B and DOME fuse.

Open or short circuit in wire harness between terminal IG and GAUGE fuse.

Open or short circuit in wire harness between terminal ACC and FR CIG fuse.

Open circuit in wire harness between terminal GND and body ground.

Rheostat light control or wire harness faulty.

Replace clock assembly.

2000 LEXUS LS400 (RM717U)

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2. PROBLEM No.2

2 CLOCK LOSES OR GAINS TIME

e–6–1

GND

ACC

I03486

BE–235

–BODY ELECTRICAL CLOCK

(a) Check that the battery positive voltage is 10 – 16 V. If voltage is not as specified, replace the battery. (b) Inspect the error of the clock.

Allowable error (per day): ± 2.0 seconds

If the error exceeds the allowable error, replace the clock assembly. (c) Check if the clock adjusting button is sticking in position

and has failed to return.

(d) Troubleshoot the clock as follows. HINT: Inspect the connector on the wire harness side.

Is there 10 – 16 V between terminal +B and body ground?

Yes

Is there 10 – 16 V between terminal IG and body ground?

Yes

Is there 10 – 16 V between terminal ACC and body ground?

Yes

Adjust or replace clock assembly.

Bellow 10 V

Locate cause and repair, or recharge battery.

2000 LEXUS LS400 (RM717U)

2098Author!: Date!:

Antenna Nut

Twist

BE4671

BE5781

BE5780

BE4674

BE–233

–

BE11Z–01

REPLACEMENT

1. Auto Antenna Models: REMOVE ANTENNA ROD

HINT: Do this operation with the battery negative (–) cable connected to the battery terminal. (a) Turn the ignition switch to ”LOCK” position. (b) Remove the antenna nut.

multaneously turn the ignition switch to ”ACC” position.

HINT:

! The rod will extend fully and be released form the motor

antenna.

! After removing the antenna rod, leave the ignition switch

as ”ACC”.

NOTICE: To prevent body damage when the antenna rod is released, hold the rod while it comes out.

2. IAuto Antenna Models: NSTALL ANTENNA ROD

(a) Insert the cable of the rod until it reaches the bottom. HINT:

! When inserting the cable, the teeth on the cable must face

toward the rear of the vehicle.

! Insert the antenna approx. 300 mm (11.8 in.).

(b) Wind the cable to retract the rod by turning the ignition

switch to ”LOCK” position.

HINT:

! If the ignition switch is already in ”LOCK” position, do step

1 (c) first, then turn the ignition switch to ”ACC” position.

! In case the cable is not wound, twist it, as shown in the

illustration.

! Even if the rod has not retracted fully, install the antenna

nut and inspect the antenna rod operation. It will finally retract fully.

wave band select buttons.

2096Author!: Date!:

BE–232

–

BE11Y–01

INSPECTION

1. Auto Antenna Models: INSPECT ANTENNA MOTOR

(a) Connect the positive (+) lead from the battery to terminal

2 and the negative (–) lead to terminal 5.

(b) Check that the motor turns (moves upward).

I05587

I05580

NOTICE: These tests must be done quickly (within 3 – 5 seconds) to prevent the coil from burning out.

opposite way (moves downward).

NOTICE: These tests must be done quickly (within 3 – 5 seconds) to prevent the coil from burning out.

Wire Harness Side

213

45 768

Te s te r c o nn e c t i on Condition Specified condition

7 – Ground Constant Continuity

1 – Ground

2 – Ground

3 – Ground Constant Battery voltage

5 – Ground

2. Auto Antenna Models: INSPECT ANTENNA MOTOR CONTROL RELAY CIRCUIT

Disconnect the connector from the relay and inspect the connector on wire harness side, as shown in the chart below.

Z08688

Ignition switch ACC or ON,

and radio switch ON and Others

Ignition switch ACC or ON,

and radio switch ON and AM

Ignition switch ACC or ON,

and radio or tape or CD switch OFF

Ignition switch ACC or ON,

and radio or tape or CD switch ON

Ignition switch ACC or ON,

and radio switch OFF

Ignition switch ACC or ON,

and radio switch ON

No voltage

Battery voltage

No voltage

Battery voltage

No voltage

Battery voltage

2095Author!: Date!:

ANTENNA

LOCATION

BE–231

–

BE11X–01

View ”A”

View ”B”

Antenna

View ”C”

View ”D”

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BE–226

Wire Harness Side

Connector ”A”

Connector ”B” Connector ”C”

Te s te r c o nn e c t i on Condition Specified condition

B14 – Ground Constant Continuity

B6 – Ground Ignition switch position ACC or ON Battery positive voltage

B6 – Ground Ignition switch position LOCK No voltage

B1 – Ground Constant Battery positive voltage

–BODY ELECTRICAL AUDIO SYSTEM

BE0D0–01

INSPECTION

1. Nakamichi made: INSPECT RADIO RECEIVER ASSEMBLY CIRCUIT

Disconnect the connectors from the radio receiver assembly. And inspect the connector on the wire harness side, as shown.

Z14756

If circuit is not as specified, inspect the circuits connected to other parts. HINT: Check the wire harness between radio receiver assembly and the CD auto changer, between radio receiver assembly and power amplifier.

Wire Harness Side

Connector ”A” Connector ”B”

Connector ”C”

e–9–1 e–13–1–A

eh–14–1 h–14–1–A

2000 LEXUS LS400 (RM717U)

Connector ”D”

2. Nakamichi made: INSPECT POWER AMPLIFIER CIRCUIT

Disconnect the connector from the power amplifier and inspect the connector on the wire harness side, as shown.

Z14757

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–BODY ELECTRICAL AUDIO SYSTEM

Te s te r c o nn e c t i on Condition Specified condition

A4 – Ground Constant Continuity

A5 – Ground Constant Battery positive voltage

A6 – Ground Ignition switch position ACC or ON Battery positive voltage

D6 – Ground

Ignition switch position ACC or ON

Radio, Tape or CD switch ON

Battery positive voltage

If circuit is not as specified, inspect the circuits connected to other parts.

BE–227

Wire Harness Side

h–14–1–A

Te s te r c on n e c t i on t o

terminal number

5 – Ground Constant Battery positive voltage

4 – Ground Ignition switch LOCK No voltage

4 – Ground Ignition switch ACC or ON Battery positive voltage

3. Nakamichi made: INSPECT CD AUTO CHANGER CIRCUIT

Disconnect the connectors from the controller and inspect the connector on the wire harness side, as shown.

Z14758

Condition Specified condition

If circuit is not as specified, inspect the circuits connected to other parts. HINT: Since the signals to and from the AP+, AP–, SGND, GND1 terminals are serial signals, they cannot ordinarily be measured with a tester.

2000 LEXUS LS400 (RM717U)

2090Author!: Date!:

+ 226 hidden pages

Lexus LS400 2000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual