Lexus ES300 (1997 year). Manual — part 437
–
DIAGNOSTICS
CRUISE CONTROL SYSTEM
DI–525
677
1997 LEXUS ES300 (RM511U)
Actuator Control Cable
INSPECTION PROCEDURE
1
Actuator control cable inspection
OK:
(a)
Check that the actuator, control cable throttle link are properly installed and that the cable and link are
connected correctly.
(b)
Check that the actuator and bell crank are operating smoothly.
(c)
Check that the cable is not loose or too tight.
OK:
Freeplay: less than 10 mm
HINT:
If the control cable is very loose, the vehicle’s loss of speed going uphill will be large.
If the control cable is too tight, the idle RPM will become high.
DI0FH–01
DI0D2–01
Customer Problem Analysis
Check and Clear DTC (Pre–check)
Vehicle Brought to Workshop
Problem Symptom Confirmation
Symptom Simulation
Symptom does not
occur
DTC Check
Normal code
DTC Chart
Problem Symptoms Table
Circuit Inspection
Actuator Check
Parts Inspection
Identification of Problem
Repair
Confirmation Test
End
Items inside
are titles of pages in this
manual with the page number indicated in the
bottom portion. See the indicated pages
for detailed explanations.
1
2
3
4
5
6
7
8
9
10
Step 2, 5, 8, 10: Diagnostic steps permitting the use of
the LEXUS hand–held tester or LEX-
US break–out–box.
P.
P.
P.
P.
P.
∼
Malfuction code
DI–526
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
678
1997 LEXUS ES300 (RM511U)
AIR CONDITIONING SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Perform troubleshooting in accordance with the procedure on the following page.
DI0D3–01
Inspector’s name:
Customer’s Name
Registration No.
Registration Year
Frame No.
Odometer Reading
km
Miles
Date vehicle
Brought In
/ /
Date of Problem Occurrence
How Often does Problem Occur?
Weather
Outdoor Temperature
/ /
Continuous
Intermittent ( times a day)
Fine
Cloudy
Snowy
Various / Other
Hot
Warm
Cool
Cold (Approx.
°
F
°
C
)
Symptoms
Blower motor doe not operation
Blower motor speed does not change
(Always Hi, Always Med, Always Lo)
Air Flow Control is
Faulty
Cabin temperature does not go down
Cabin temperature does not rese
Response is slow
Cannot change between FRS and REC
(Always Fresh or always Recirculating)
Mode will not change
Will not enter the desired mode
Temperature
Control is Faulty
Air Inlet Control is
Faulty
Vent Control is
Faulty
DTC Check
1st Time
2nd Time
Normal Code
Malfunction Code (Code )
Normal Code
Malfunction Code (Code )
AIR CONDITIONING SYSTEM Check Sheet
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI–527
679
1997 LEXUS ES300 (RM511U)
CUSTOMER PROBLEM ANALYSIS CHECK
DI0D4–01
AT0716
ON
OFF
0.5 Seconds
0.5 Seconds
Turn ignition switch ON with AUTO
and R/F switches held down.
Indicator Check
DEF
R/F
(Sensor Check)
(continuous operation)
DTC
Check
(Sensor Check)
(stepped operation)
DTC
Check
Actuator Check
(continuous operation)
Actuator Check
(stepped operation)
If both AUTO switch and R/F switches are
not pressed at the same time.
Cancel check mode and can start air condi-
tioning control.
: Indicates a switch operation
OFF
OFF
DEF
R/F
AUTO
AUTO
R/F
OFF
OFF
AUTO
DEF
DEF
DI–528
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
680
1997 LEXUS ES300 (RM511U)
PRE–CHECK
1.
WARNING FOR A/C COMPRESSOR LOCK
If compressor lock occurs during air conditioning operation, the
A/C switch indicator on the air conditioning control assembly
starts blinking to warn the driver.
When this occurs, check for compressor lock (DTC 22) using
DTC check then proceed to inspect the circuit or the component
(See page
2.
LIST OF OPERATION METHODS
By operating each of the air conditioning control switches as shown the diagram below, it is possible to enter
the diagnosis check mode.
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