1991 LEXUS SC400 Service Repair Manual

Page 3785 of 4087

LEXUS SC400 1991  Service Repair Manual 
AIR CONDITIONING EVAPORATOR ODOR ± AC001±97 September 12, 1997
SC 3003. Reinstallation of parts.
SC 400
(Continued) (a) Insert the (2) filters into the cooling
unit as shown in the illustration.
NO

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LEXUS SC400 1991  Service Repair Manual 
Page 11 of 11
AIR CONDITIONING EVAPORATOR ODOR ± AC001±97 September 12, 1997
LX 4501. Removal of parts.
(a) Remove the glove compartment door.
(b) Remove the A/C Amplifier.
(c) Remove power transis

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LEXUS SC400 1991  Service Repair Manual 
Lexus Supports ASE CertificationPage 1 of 12
Title:
SENSOR INSPECTION FOR AIR
CONDITIONING SYSTEM
Models:
90 ± Current All Models
Technical Service
Information Bulletin
December 16, 2004
AC005-04
T

Page 3788 of 4087

LEXUS SC400 1991  Service Repair Manual 
SENSOR INSPECTION FOR AIR CONDITIONING SYSTEM ± AC005-04 December 16, 2004
Page 2 of 12
1. Inspect Room Temperature  Sensor.
A. Measure the sensor resistance.
Resistance Value at 77 5F
(25 5C)1700 +

Page 3789 of 4087

LEXUS SC400 1991  Service Repair Manual 
SENSOR INSPECTION FOR AIR CONDITIONING SYSTEM ± AC005-04 December 16, 2004
Page 3 of 12
2. Inspect Ambient 
Temperature Sensor.
A. Measure the sensor resistance according to the selected graph
(spec

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LEXUS SC400 1991  Service Repair Manual 
SENSOR INSPECTION FOR AIR CONDITIONING SYSTEM ± AC005-04 December 16, 2004
Page 4 of 12
3. Inspect Air Duct Sensor.
A. Measure the sensor resistanceaccording to the table and 
graph (specification).

Page 3791 of 4087

LEXUS SC400 1991  Service Repair Manual 
SENSOR INSPECTION FOR AIR CONDITIONING SYSTEM ± AC005-04 December 16, 2004
Page 5 of 12
4. Inspect Evaporator Temperature  Sensor.
Select the appropriate graph (specification) using the following ta

Page 3792 of 4087

LEXUS SC400 1991  Service Repair Manual 
SENSOR INSPECTION FOR AIR CONDITIONING SYSTEM ± AC005-04 December 16, 2004
Page 6 of 12
A. Measure the sensor resistance according to the selected graph (specification)\
.
NOTE:
�Even slightly touch