1991 LEXUS SC300 code 32

OKNG
OKNG
OKNG
INSPECTION PROCEDURE
1Check TRAC actuator solenoid.
C
OK
PDisconnect TRAC actuator connector.
Check continuity between each terminal of TRAC ac-
tuator shown below.
Replace TRAC actuator.
2Check for open and short in harness and connector between solenoid relay and E\
CU (See page
IN±33 ).
Repair or replace harness or connector.
3Check for short in harness and connector between SMC and SRC, SAC and SMC, an\
d SAC and
SRC terminals with TRAC actuator and ECU connectors are disconnected.
Repair or replace harness or connector.
If the same code is still output after the diagnostic trouble code is dele\
ted, check the contact condition
of each connection. If the connections are normal, the ECU may be defectiv\
e.
BR±116±
BRAKE SYSTEM ANTI±LOCK BRAKE SYSTEM (ABS)
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WIRING DIAGRAM
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
If the ECU detects trouble, it lights the ABS warning light while at the s\
ame time prohibiting ABS control.
At this time, the ECU records a diagnostic trouble code in memory.After removing the short pin of the DLC1,
connect a DLC1 or connect terminals Tc and E1 of the DLC2 to make the ABS warning light to blink and
output the diagnostic trouble code.DIAGNOSTIC CHARTPerform troubleshooting in accordance with the
chart below for each trouble symptom.
DIAGNOSTIC CHARTDIAGNOSTIC CHART
Perform troubleshooting in accordance with the chart below for each trouble sym\
ptom.
 


ABS warning light does not light up 


Go to step
 

ABS warning light remains on 

Go to step
BR±144±
BRAKE SYSTEM ANTI±LOCK BRAKE SYSTEM (ABS)
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NOYES
YESNO
OKNG
INSPECTION PROCEDURE
3Is diagnosis trouble code output?
Perform diagnostic trouble code check on page BR±76.
Repair circuit indicated by the code output.
4Does ABS warning light go off if short pin is removed?
Check for short in harness and connector between warn-
ing light and data link connector 1 and ECU (See page
IN±33 ).
5Check ABS solenoid relay (See step No. ).
Replace ABS solenoid relay.
Repair or replace and check for short in harness
and connector between data link connector 1 and
ABS solenoid relay (See page IN±33).
±
BRAKE SYSTEM ANTI±LOCK BRAKE SYSTEM (ABS)BR±147
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IN±33).
WIRING DIAGRAM
Tc Terminal Circuit
CIRCUIT DESCRIPTION
Connecting between terminals Tc and E1 of the DLC1 or the DLC2 causes the ECU to display the diagnos-
tic trouble code by flashing the ABS warning light.
DIAGNOSTIC CHARTDIAGNOSTIC CHART
BR±148±
BRAKE SYSTEM ANTI±LOCK BRAKE SYSTEM (ABS)
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IN±33 ).
WIRING DIAGRAM
Ts Terminal Circuit
CIRCUIT DESCRIPTION
The sensor check circuit detects abnormalities in the speed sensor signal w\
hich can not be detected with
the diagnostic trouble code check.Connecting terminals Ts and E1 of the DLC1 in the engine compartment
starts the check.
DIAGNOSTIC CHARTDIAGNOSTIC CHART
BR±150±
BRAKE SYSTEM ANTI±LOCK BRAKE SYSTEM (ABS)
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CodeMaterial
name Heat *
resistant
temperature
limit
°C (°F) Resistance to
alcohol or gasoline Notes
AAS Acrylonitrile
Acrylic Styrene 80
(176) Alcohol is harmless if applied
only for short time in small
amounts (e.g., quick wiping to
remove grease). Avoid gasoline and or-
ganic or aromatic sol-
vents.
ABS Acrylonitrile
Butadiene Styrene 80
(176) Alcohol is harmless if applied
only for short time in small
amounts (e.g., quick wiping to
remove grease).
Avoid gasoline and or-
ganic or aromatic sol-
vents.
AES Acrylonitrile
Ethylene Styrene 80
(176) Alcohol is harmless if applied
only for short time in small
amounts (e.g., quick wiping to
remove grease). Avoid gasoline and or-
ganic or aromatic sol-
vents.
BMC Bulk
Moulding
Compound
150
(302) Alcohol and gasoline are
harmless. Most solvents are
harmless.
CAB Cellulose
Acetate 80
(176) Alcohol is harmless if applied
only for short time in small
amounts (e.g., quick wiping to
remove grease). Avoid gasoline and or-
ganic or aromatic sol-
vents.
EPDM Ethylene
Propylene 100
(212) Alcohol is harmless.
Gasoline is harmless if applied
only for short time in small
amounts. Most solvents are harm-
less but avoid dipping in
gasoline, solvents, etc.
PA Polyamide
(Nylon) 80
(176) Alcohol and gasoline are
harmless.
Avoid battery acid.
PBT Polybutylene
Terephthalate 160
(320) Alcohol and gasoline are
harmless. Most solvents are
harmless.
PC Polycarbonate 120
(248) Alcohol is harmless. Avoid gasoline, brake
fluid, wax, wax removers
and organic solvents.
PE Polyethylene 80
(176) Alcohol and gasoline are
harmless. Most solvents are
harmless.
PET Polyethylene
Terephthalate 75
(167) Alcohol and gasoline are
harmless.
Avoid dipping in water.
HANDLING PRECAUTIONS
1. The repair procedure for plastic body parts must conform with the type o\
f plastic material.
2. Plastic body parts are identified by the codes in the following chart.
3. When repairing metal body parts adjoining plastic body parts (by brazin\
g, frame cutting, welding, paint-
ing, etc.), consideration must given to the property of the plastic.
*Temperatures higher than those listed here may result in material deforma\
tion during repair.
PLASTIC BODY PARTSPP-2
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CodeMaterial
name Heat*
resistant
temperature
limit
°C (°F) Resistance to
alcohol or gasoline Notes
PMMA Polymethyl
Methacrylate 80
(176) Alcohol is harmless if applied only
for short time in small amounts.
Avoid dipping or immers-
ing in alcohol, gasoline,
solvents, etc.
POM Polyoxymethylene
(Polyacetal) 100
(212) Alcohol and gasoline are
harmless.
Most solvents are
harmless.
PP Polypropylene 80
(176) Alcohol and gasoline are
harmless.
Most solvents are
harmless.
PPO Modified
Polyphenylene
Oxide
100
(212) Alcohol is harmless. Gasoline is harmless if
applied only for quick
wiping to remove
grease.
PS Polystyrene 60
(140) Alcohol and gasoline are harm-
less if applied only for short time
in small amounts. Avoid dipping or immers-
ing in alcohol, gasoline,
solvents, etc.
PUR Polyurethane 80
(176) Alcohol is harmless if applied only for
very short time in small amounts (e.g.,
quick wiping to remove grease).
Avoid dipping or immers-
ing in alcohol, gasoline,
solvents, etc.
PVC Polyvinylchloride
(Vinyl) 80
(176) Alcohol and gasoline are harmless if
applied only for short time in small
amounts (e.g., quick wiping to remove
grease). Avoid dipping or immers-
ing in alcohol, gasoline,
solvents, etc.
SAN Styrene
Acrylonitrile 80
(176) Alcohol is harmless if applied only
for short time in small amounts
(e.g., quick wiping to remove
grease).
Avoid dipping or immers-
ing in alcohol, gasoline,
solvents, etc.
SMC Sheet
Moulding
Compound
180
(356) Alcohol and gasoline are
harmless.
Avoid alkali
TPO Thermoplastic
Olefine 80
(176) Alcohol is harmless.
Gasoline is harmless if applied only
for short time in small amounts.
Most solvents are harm-
less but avoid dipping in
gasoline, solvents, etc.
TPU Thermoplastic
Polyurethane 80
(176) Alcohol is harmless if applied only for
very short time in small amounts (e.g.,
quick wiping to remove grease).
Avoid dipping or immers-
ing in alcohol, gasoline,
solvents, etc.
UP Unsaturated
Polyester 11 0
(233) Alcohol and gasoline are
harmless.
Avoid alkali
* Temperatures higher than those listed here may result in material deforma\
tion during repair.
PLASTIC BODY PARTSPP-3
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2. INSTALL PISTON RINGS
(a) Install the oil ring expander and 2 side rails by hand.
(b) Using a piston ring expander, install the 2 compression ringswith the code mark facing upward.
Code mark:
No.11R or T
No.2 2R or 2T
(c) Position the piston rings so that the ring ends are as shown. NOTICE: Do not align the ring ends.
3. INSTALL BEARINGS
(a) Align the bearing claw with the groove of the connecting rod or connecting cap.
(b) Install the bearings in the connecting rod and connecting rod cap.
EG±178
±
1UZ±FE ENGINE ENGINE MECHANICAL
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