2003 LEXUS LS430 Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Tester connectionConditionSpecified condition
A13-17 (NOX) - E10-4 (NOX)AlwaysBelow 1 ohms
A13-8 (SG-1) - E10-1 (S.G)AlwaysBelow 1 ohms
A13-17 (NOX) - Body groundAlways10 kohms or higher
A13-8 (SG-1)

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LEXUS LS430 2003  Factory Repair Manual Fig. 125: Checking Harness And Connector (Air Conditioning Amplifier - Exhaust Gas Sensor) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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LEXUS LS430 2003  Factory Repair Manual NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE AIR CONDITIONING AMPLIFIER (SEE REPLACEMENT )  
CIRCUIT DESCRIPTION 
The cool air bypass damper control servomotor is controlled by the A/C ampli

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LEXUS LS430 2003  Factory Repair Manual 1.PERFORM ACTUATOR CHECK 
a. Warm up the engine.  
b. Set the actuator check mode (SEE ACTUATOR CHECK
 ).  
c. Press the driver temperature up switch, and change to STEP operation.  
d. Press the driv

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LEXUS LS430 2003  Factory Repair Manual Fig. 127: Inspecting Cool Air Bypass Servomotor 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPLACE COOL AIR BYPASS SERVOMOTOR  
OK: Go to next step  
3.CHECK HARNESS AND CONNECTOR (COOL AIR BY

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LEXUS LS430 2003  Factory Repair Manual C24-1 (VZ) - Body groundAlways10 kohms or higher
C24-2 (GND) - Body groundAlwaysBelow 1 ohms

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LEXUS LS430 2003  Factory Repair Manual Fig. 128: Checking Harness And Connector (Cool Air Bypass Servomotor - Air Conditioning

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LEXUS LS430 2003  Factory Repair Manual Amplifier) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: REPLACE AIR CONDITIONING AMPLIFIER (SEE REPLACEMENT
 )  
CIRCUIT DESCRIPTION 
The cool air by