LEXUS LS430 2003 Factory Repair Manual

Fig. 193: Checking Harness And Connector (Luggage Room J/B -Smoke Sensor)
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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE LUGGAGE ROOM J/B ECU
CIRCUIT DESCRIPTION
The intelligent swing register is controlled by the A/C amplifier. It is activated by selecting FACE or BI-
LEVEL on the mode select switch and turning the swing register switch on.
WIRING DIAGRAM

Fig. 194: Intelligent Swing Register Circuit
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INSPECTION PROCEDURE
1.INSPECT AIR CONDITIONING AMPLIFIER
a. Remove the A/C amplifier with connectors still connected.
b. Measure the voltage according to the value (s) in the table below.
Standard:
AIR CONDITIONING AMPLIFIER VOLTAGE
Specified

NG: Go to STEP 2
Fig. 195: Inspecting Air Conditioning Amplifier

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OK: Go to STEP 3
2.INSPECT INTELLIGENT SWING REGISTER STEP MOTOR
a. Remove the intelligent swing register.
b. Measure the resistance according to the value (s) in the table below.
Standard:
INTELLIGENT SWING REGISTER STEP MOTOR RESISTANCE
Tester connectionConditioncondition
A12-24 (PS+B) -
Body groundTurn the ignition switch to ON position Turn the mode selector to
FACE or B/L position Swing switch is pressed10 to 14 V
Tester connectionConditionSpecified condition
I18-9 - I18-3 (2)Always279 to 321 ohms

HINT:
(): Passenger side
NG: REPLACE INTELLIGENT SWING REGISTER
Fig. 196: Inspecting Intelligent Swing Register Step Motor

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OK: Go to next step
3.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - INTELLIGENT
SWING REGISTER) (SEE ELECTRONIC CIRCUIT INSPECTION PROCEDURE
)
a. Measure the resistance according to the value (s) in the table below.
Standard:
I18-9 - I18-4 (1)Always279 to 321 ohms
I18-9 - I18-5 (6)Always279 to 321 ohms
I18-9 - I18-10 (7)Always279 to 321 ohms

AIR CONDITIONING AMPLIFIER - INTELLIGENT SWING REGISTER RESISTANCE
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
Tester connectionConditionSpecified condition
A12-1 (DS1) - I18-3AlwaysBelow 1 ohms
A12-1 (DS1) - Body groundAlways10 kohms or higher
A12-2 (DS2) - I18-4AlwaysBelow 1 ohms
A12-2 (DS2) - Body groundAlways10 kohms or higher
A12-8 (DS3) - I18-5AlwaysBelow 1 ohms
A12-8 (DS3) - Body groundAlways10 kohms or higher
A12-9 (DS4) - I18-10AlwaysBelow 1 ohms
A12-9 (DS4) - Body groundAlways10 kohms or higher
A12-24 (PS+B) - I18-9AlwaysBelow 1 ohms
A12-24 (PS+B) - Body groundAlways10 kohms or higher
A12-3 (PS1) - I18-2AlwaysBelow 1 ohms
A12-3 (PS1) - Body groundAlways10 kohms or higher
A12-4 (PS2) - I18-1AlwaysBelow 1 ohms
A12-4 (PS2) - Body groundAlways10 kohms or higher
A12-5 (PS3) - I18-6AlwaysBelow 1 ohms
A12-5 (PS3) - Body groundAlways10 kohms or higher
A12-6 (PS4) - I18-7AlwaysBelow 1 ohms
A12-6 (PS4) - Body groundAlways10 kohms or higher

Fig. 197: Checking Harness And Connector (Air Conditioning Amplifier - Intelligent Swing
Register)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OK: REPLACE AIR CONDITIONING AMPLIFIER (SEE REPLACEMENT
)

SYSTEM REFERENCE
Fig. 1: Identifying DLC3 Connector Terminals

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System NameSee Procedure
Front Power Seat Control SystemINITIALIZATION

If the vehicle is raised with its engine running, connect terminals OPB and CG of the DLC3 to stop
the vehicle height control operation of the suspension control ECU.
Do not operate the steering wheel if there is no air in the pneumatic cylinder.
HINT:
The pneumatic cylinder could be damaged if twisted without air in the cylinder.
In the case of lifting down the vehicle without air in the cylinder, make sure all the pipes are securely
connected.
HINT:
The pneumatic cylinder could be damaged if any pipe is disconnected while lifting down the vehicle.
Do not apply battery voltage to the compressor motor for more than 60 seconds to prevent damage to the
motor.
HINT:
When it is necessary to perform the operation by charging the battery for more than 60 seconds, for example
height recovery without air in the cylinder, proceed to the operation as follows: after 60 seconds have passed,
turn the ignition switch off once, and then turn the ignition switch to the ON position again for commencement
of operation.

Fig. 2: Identifying Air Suspension System Components Location
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