ect LEXUS SC300 1991 Service Repair Manual

Lexus Supports ASE CertificationPage 1 of 5
Title:
SUSPENSION BALL JOINT INSPECTION
Models:
Applicable Models
Technical Service
Information Bulletin
October 11, 2002
PG012-02
This Service Bulletin is to inform you of the inspection method, and free pl\
ay
specification figures for suspension ball joints. The on±vehicle insp\
ection methods
have been standardized.
1990 ± 2000 model year LS 400 vehicles.
2001 ± 2003 model year LS 430 vehicles.
1993 ± 2003 model year GS 300 vehicles.
1998 ± 2000 model year GS 400 vehicles.
2001 ± 2003 model year GS 430 vehicles.
1992 ± 2000 model year SC 300 & SC 400 vehicles.
2002 ± 2003 model year SC 430 vehicles.
2001 ± 2003 model year IS 300 vehicles.
1999 ± 2003 model year RX 300 vehicles.
1990 ± 2003 model year ES 250 & ES 300 vehicles.
1998 ± 2003 model year LX 470 vehicles.
OP CODEDESCRIPTIONTIMEOFPT1T2
N/ANot Applicable to Warranty±±±±
PRODUCT GENERAL INFORMATION
Introduction
Applicable Vehicles
Warranty
Information
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SUSPENSION BALL JOINT INSPECTION ± PG012-02 October 11, 2002
Page 2 of 5
MODELLOCATION
LOWER BALL JOINT OR SUSPENSION
BALL JOINTUPPER BALL JOINT
MODELLOCATIONINSP.
METHODMAX. PLAYTURNING TORQUEINSP.
METHODMAX. PLAYTURNING TORQUE
LS 400
(UCF10)
Front1±(A)0.016 in.
(0.4) mm4 in. lbf
(0.5 N m)
or Less
(UCF10)
1990±1994
Rear3No Play Felt31 in. lbf
(3.5 N m)
or Less
LS 400
(UCF20)
Front1±(A)0.016 in.
(0.4) mm22 in. lbf
(2.5 N m)
or Less
(UCF20)
1995±2000Rear3No Play Felt31 in. lbf
(3.5 N m)
or Less
LS 430
(UCF30)
Front1±(A)No Play Felt31 in. lbf
(3.5 N m)
or Less
(UCF30)
2001±2003Rear3No Play Felt31 in. lbf
(3.5 N m)
or Less
GS 300
(JZS147)
Front1±(A)0.016 in.
(0.4) mm27 in. lbf
(3.0 N m)
or Less
2No Play31 in. lbf
(3 5 N m)(JZS147)
1993±1997Rear1±(A)No Play
Felt31 in. lbf
(3.5 N m)
or Less2No Play
Felt(3.5 N m)
or Less
GS 300, 400, 430
(JZS16#
Front1±(A)0.016 in.
(0.4) mm27 in. lbf
(3.0 N m)
or Less
(JZS16#,
UZS16#)
1998±2003
Rear3No Play Felt31 in. lbf
(3.5 N m)
or Less
SC 300, 400
(JZZ31,
Front1±(A)0.016 in.
(0.4) mm27 in. lbf
(3.0 N m)
or Less
(JZZ31,
UZZ30)
1992±2000
Rear1±(A)No Play Felt31 in. lbf
(3.5 N m)
or Less
SC 430
(UZZ40)
Front1±(A)0.016 in.
(0.4) mm27 in. lbf
(3.0 N m)
or Less
(UZZ40)
2002±2003
Rear3No Play Felt31 in. lbf
(3.5 N m)
or Less
Inspection
Information
Table
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SUSPENSION BALL JOINT INSPECTION ± PG012-02 October 11, 2002
Page 3 of 5
MODELLOCATION
LOWER BALL JOINT OR SUSPENSION
BALL JOINTUPPER BALL JOINT
MODELLOCATIONINSP.
METHODMAX. PLAYTURNING TORQUEINSP.
METHODMAX. PLAYTURNING TORQUE
IS 300
(JCE10)
Front1±(A)0.016 in.
(0.4) mm27 in. lbf
(3.0 N m)
or Less
2No Play
31 in. lbf
(3.5 N m)
or Less
(JCE10)
2001±2003
Rear3No Play Felt31 in. lbf
(3.5 N m)
or Less2No Play
Felt27 in. lbf
(3.0 N m)
or Less
RX 300
(MCU10, 15)
1999 2003
Front1±(B)No Play Felt31 in. lbf
(3.5 N m)
or Less
N/AN/AN/A
1999±2003RearN/AN/AN/AN/AN/AN/A
ES 250 & 300 (VZV21,
MCV20, 30)Front1±(B)No Play Felt31 in. lbf
(3.5 N m)
or Less
N/AN/AN/A
MCV20, 30)
1990±2003RearN/AN/AN/AN/AN/AN/A
LX 470
(UZJ100)
1998 2003
Front1±(A)No Play Felt27 in. lbf
(3.0 N m)
or Less
2No Play Felt40 in. lbf
(4.5 N m)
or Less
1998±2003RearN/AN/AN/AN/AN/AN/A
NOTE:
Be sure to check the table for the
applicable inspection type based on
the vehicle model.
Refer to the table for the standard
free play values.
1. Inspect Lower Ball Joint Free Play
A. Move the hub up and down byhand (Most models with
wish±bone suspension):
a. Remove the tire.
b. Install the 2 lug nuts.
c. Inspect the free play while moving the lug nuts up and
down at a force of 67 lbf
(294 N, 30 kgf).
Inspection
Information
Table
(Continued)
Free Play
Inspection
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SUSPENSION BALL JOINT INSPECTION ± PG012-02 October 11, 2002
Page 4 of 5
B. Move the lower arm by hand (All
models with strut type suspension
and some models with wish±bone
type suspension):
a. Lift up the vehicle.
b. Inspect the free play while moving the lower arm up and
down at a force of 67 lbf
(294 N, 30 kgf).
2. Inspect Upper Ball Joint Play Move the upper arm by hand (Models
where the LOWER control arm are
linked by a torsion bar, and all models
using a coil spring.
A. Remove the front tire.
B. Inspect the free play while moving the upper arm up and down at a
force of 67 lbf (294 N, 30 kgf).
3. Inspect the Suspension Arm Ball Joint Free Play
A. Lift up the vehicle.
B. Inspect the free play while moving the control arm by hand.
(Reference)
Free Play Inspection Method
(Gauge Installation) Position the dial gauge between the
arm (upper or lower) and the knuckle,
and measure free play.
(This illustration shows how to
measure free play for vehicles with
double wishbone type suspension
with coil spring).
Inspect Ball Joint Dust Cover
Check for cracks and grease leaks on the
dust cover (boots).Free Play
Inspection
(Continued)
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SUSPENSION BALL JOINT INSPECTION ± PG012-02 October 11, 2002
Page 5 of 5
Inspect Ball Joint Turning Torque
Move the stud back and forth 5 times,
then turn the stud continuously at 3±5
seconds per turn, and measure the
turning torque at the 5th turn.
HINT:
Refer to the table for standard values
for the turning torque.
Turning
Torque
Inspection
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11 9
1K
7
15 14 11 7 3 4 16 8
2 1 4 4
IP17
IF2 7
I2 I8
I11
I11IF
IF2
16 IF2 18 IP1 6IP118
4 1 M
5
2
4
1 M
5
2
UL1 L1 LSWD LSWP ACT± ACT+ E
P±B
L±W
P±B
W±L
G±W
G±Y
L±W
W±B
W±B L±R
L±R
L±W
G±W
G±Y
W±L
P±B
L±W
L±R
W±B
L±W
L±W
L±W
P±B
L±W
W±B
L±R L±R W±L
L±R
W±B
FROM POWER SOURCE SYSTEM (
SEE PAGE 56 )
30A
DOOR
+B2
THEFT DETERRENT AND DOOR LOCK ECU
L±W
L±W
P±B
L±W
DOOR LOCK MOTOR,
DOOR UNLOCK DETECTION SW AND
DOOR OPEN DETECTION SW LH
DOOR LOCK MOTOR,
DOOR UNLOCK DETECTION SW AND
DOOR OPEN DETECTION SW RH
DIODE
D10
D11
T9 6 5
I15
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120
WIRELESS DOOR LOCK REMOTE CONTROL
DOOR LOCK CONTROL (LOCK AND UNLOCK) IS PERFORMED BY REMOTE CONTROL, WI\
THOUT THE IGNITION KEY INSERTED IN
THE DOOR KEY CYLINDER, USING LOW±POWER RADIO WAVES EMITTED BY A TRANSMITTER BUILT INTO IGNITION KEY.
1. WIRELESS DOOR LOCK OR UNLOCK NORMAL OPERATION
WITH THE WIRELESS DOOR LOCK MAIN SW ON, THE IGNITION KEY NOT INSERTED INTO THE IGNITION KEY CYLINDER (UNLOCK
WARNING SW OFF) AND ALL THE DOORS COMPLETELY CLOSED, WHEN THE SWITCH (TRANSMITTER) ON THE IGNITION KEY IS
PUSHED, THE WIRELESS DOOR LOCK ECU RECEIVES THE ELECTRICAL WAVES FROM THE IGNITION KEY (TRANSMITTER),
CAUSING IT TO OPERATE.
AS A RESULT, THE ECU JUDGES WHETHER THE DOOR IS LOCKED OR UNLOCKED BASED ON THE SIGNAL FROM THE DOOR LOCK
MOTOR, AND SENDS A SIGNAL TO THE DOOR LOCK ECU TO SWITCH THE CONDITION FROM LOCK TO UNLOCK OR VICE VERSA,
CAUSING THE DOOR LOCK MOTOR TO OPERATE (FOR THE CURRENT FLOW DURING LOCK AND UNLOCK REFER TO THE DOOR
LOCK CONTROL SYSTEM.)
2. AUTO LOCK OPERATION
AFTER PUSHING THE IGNITION KEY SWITCH (TRANSMITTER) TO UNLOCK ALL THE DOORS, IF A DOOR IS NOT OPENED WITHIN 30
SECONDS, ALL OF THE DOORS ARE AUTOMATICALLY LOCKED AGAIN.
3. WIRELESS DOOR LOCK STOP FUNCTION
IF A DOOR IS OPEN (DOOR COURTESY SW ON), A SIGNAL IS INPUT FROM THE DOOR OPEN COURTESY SW TO THE WIRELESS
DOOR LOCK ECU, STOPPING WIRELESS DOOR LOCK OR UNLOCK.
IF THE IGNITION KEY IS IN THE IGNITION KEY CYLINDER (UNLOCK WARNING SW ON), THE UNLOCK WARNING SWITCH INPUT A
SIGNAL TO THE WIRELESS DOOR LOCK ECU, STOPPING WIRELESS DOOR LOCK OR UNLOCK.
4. DOOR LOCK MOTOR PROTECTIVE FUNCTION
IF THE DOOR LOCK OR UNLOCK CONDITION DOES NOT CHANGE AFTER WIRELESS DOOR L\
OCK OR UNLOCK OPERATION, THE
DOOR LOCK ECU SENDS CURRENT TEN TIMES TO THE DOOR LOCK MOTOR. IF THE DOOR LOCK CONDITION STILL HAS NOT
CHANGED AS A RESULT THE WIRELESS DOOR LOCK ECU STOPS RECEPTION AND STOPS DOOR LOCK AND UNLOCK FUNCTION.
BY MANUALLY OPERATION THE DOOR LOCK OR UNLOCK, THE STOP CONDITION OF THE WIRELESS DOOR LOCK FUNCTION IS
RELEASED.
D10, D11 DOOR OPEN DETECTION SW LH, RH
3±6 : CLOSED WITH DOOR OPENED
I15 UNLOCK WARNING SW [IGNITION SW]
10±9 : CLOSED WITH IGNITION KEY IN CYLINDER
W 8 WIRELESS DOOR LOCK ECU
1±GROUND: APPROX. 12 VOLTS WITH WIRELESS DOOR LOCK MAIN SW ON
7±GROUND: ALWAYS CONTINUITY
10±GROUND: CONTINUITY WITH EACH DOOR OPENED
6±GROUND: CONTINUITY WITH IGNITION KEY IN CYLINDER
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
D1030I1529W 729
D1130T 929W 831
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
219ENGINE COMPARTMENT LEFT
423LEFT KICK PANEL (J/B NO.1 LEFT)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B20ENGINE ROOM MAIN WIRE
1D20FRONT DOOR LH WIRE
1E20INSTRUMENT PANEL WIRE
1H
1I20COWL WIRE1J20COWL WIRE
1K
3A22INSTRUMENT PANEL WIRE3E22INSTRUMENT PANEL WIRE
SYSTEM OUTLINE
SERVICE HINTS
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121
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IF236FRONT DOOR LH WIRE AND COWL WIRE (LEFT KICK PANEL)
IP138FRONT DOOR RH WIRE AND COWL WIRE (RIGHT KICK PANEL)
BX140FLOOR NO. 3 WIRE AND COWL WIRE (RIGHT KICK PANEL)
BY140INSTRUMENT PANEL WIRE AND FLOOR NO. 3 WIRE (RIGHT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IF36LEFT KICK PANEL
IJ36RIGHT KICK PANEL
BL40UNDER THE CENTER PILLAR RH
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I 2B 440FRONT DOOR LH WIREI 7B 540FRONT DOOR LH WIRE
I 838COWL WIREB 640FRONT DOOR RH WIREI11
COWL WIRE
B 740FRONT DOOR RH WIRE
I15
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201
WIPER AND WASHER
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C15B28W 227
C16A28W 527
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1H
1J20COWL WIRE
1K
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IE136ENGINE ROOM MAIN WIRE AND COWL WIRE (R/B NO. 4)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IF36LEFT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I 738COWL WIRE
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203
WITH THE IGNITION SW TURNED ON, THE CURRENT FLOWS TO TERMINAL (A)14 OF THE WIPER AND WASHER SW, TERMINAL 2 OF
THE WASHER MOTOR AND TERMINAL 6 OF THE WIPER MOTOR THROUGH THE WIPER FUSE.
1. LOW SPEED POSITION
WITH WIPER SW TURNED TO LOW POSITION, THE CURRENT FLOWS FROM TERMINAL (A)14 OF THE WIPER AND WASHER SW "
TERMINAL (B)8 " TERMINAL 3 OF THE WIPER MOTOR " TERMINAL 1 " TO GROUND AND CAUSES TO THE WIPER MOTOR TO RUN
AT LOW SPEED.
2. HIGH SPEED POSITION
WITH WIPER SW TURNED TO HIGH POSITION, THE CURRENT FLOWS FROM TERMINAL (A)14 OF THE WIPER AND WASHER SW "
TERMINAL (A)7 " TERMINAL 2 OF THE WIPER MOTOR " TERMINAL 1 " TO GROUND AND CAUSES TO THE WIPER MOTOR TO RUN
AT HIGH SPEED.
3. INT POSITION
WITH WIPER SW TURNED TO INT POSITION, THE RELAY OPERATES AND THE CURRENT WHICH IS CONNECTED BY RELAY
FUNCTION FLOWS FROM TERMINAL (A)14 OF THE WIPER AND WASHER SW " TERMINAL (A)6 " TO GROUND . THIS FLOW OF
CURRENT OPERATES THE INTERMITTENT CIRCUIT AND THE CURRENT FLOWS FROM TERMINAL (A)14 OF THE WIPER AND
WASHER SW " TERMINAL (B)8 " TERMINAL 3 OF THE WIPER MOTOR " TERMINAL 1 " TO GROUND AND FUNCTIONS.
THE INTERMITTENT OPERATION IS CONTROLLED BY A CONDENSER'S CHARGED AND DISCHARGED FUNCTION INST\
ALLED IN
RELAY AND THE INTERMITTENT TIME IS CONTROLLED BY A TIME CONTROL SW TO CHARGE THE CHARGING TIME OF THE
CONDENSER.
4. MIST POSITION
WITH WIPER SW TURNED TO MIST POSITION, THE CURRENT FLOWS FROM TERMINAL (A)14 OF THE WIPER AND WASHER SW "
TERMINAL (B)8 " TERMINAL 3 OF THE WIPER MOTOR " TERMINAL 1 " TO GROUND AND CAUSES TO THE WIPER MOTOR TO RUN
AT LOW SPEED.
5. WASHER CONTINUOUS OPERATION
WITH WASHER SW TURNED TO ON, THE CURRENT FLOWS FROM TERMINAL 2 OF THE WASHER MOTOR " TERMINAL 1 "
TERMINAL (A)13 OF THE WIPER AND WASHER SW " TERMINAL (A)6 " TO GROUND AND CAUSES TO THE WASHER MOTOR TO
RUN. AND WINDOW WASHER IS JET. THIS CAUSES THE CURRENT TO FLOW WASHER CONTINUOUS OPERATION CIRCUIT IN
TERMINAL (A)14 OF THE WIPER AND WASHER SW " TERMINAL (B)8 " TERMINAL 3 OF THE WIPER MOTOR " TERMINAL 1 TO
GROUND AND FUNCTION.
C15(B), C16(A) WIPER AND WASHER SW [COMB. SW]
(A) 6±GROUND : ALWAYS CONTINUITY
(A) 14±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
(B) 8±GROUND : APPROX. 12 VOLTS WITH WIPER AND WASHER SW AT LOW OR MIST POSITION
APPROX. 12 VOLTS EVERY APPROX. 1 TO 10 SECONDS INTERMITTENTLY WITH WIPER SW AT INT POSITION
(B) 17±GROUND : APPROX. 12 VOLTS WITH IGNITION SW ON UNLESS WIPER MOTOR AT STOP POSITION
(A) 7±GROUND : APPROX. 12 VOLTS WITH IGNITION SW ON AND AFTER WIPER SW OFF UNTIL WIPER MOTOR STOPS
W 5 WIPER MOTOR
6±5 : CLOSED UNLESS WIPER MOTOR AT STOP POSITION
SYSTEM OUTLINE
SERVICE HINTS
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