Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Supra 1986-1987.1990.1995.1997 Approved Toyota Supra 1997 Diagnostics-Other
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download Diagnostics-Other documenatation <<
Text preview - extract from the document
DI-440
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
ANTI-LOCK BRAKE SYSTEM
DI4V4-01
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshooting in accordance with the procedure on the following pages.
Vehicle Brought to Workshop
Items inside are titles of pages in this manual,
with the page number in the bottom portion. See
1 Customer Problem Analysis the pages for detailed explanations.
P. DI-441
2 Check and Clear DTC (Precheck)
P. DI-442
Symptom
does not occur
3 4 Symptom Simulation
Problem Symptom Confirmation
P. IN-18
Symptom
occurs
5 DTC Check Normal code
P. DI-442
Malfunction code
6 DTC Chart 7 Problem Symptoms Chart
P. DI-447 P. DI-452
9
8 Circuit Inspection Sensor Check
Check for Fluid Leakage
P. DI-453 DI-498 P. DI-498
Identification of Problem
10
Repair
11
Confirmation Test
Step 2, 5, 8, 9, 11: Diagnostic steps permitting the use of the
TOYOTA hand-held tester or TOYOTA
End break-out-box.
1997 SUPRA (RM502U)
Author : Date : 668
DI-441
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
DI4V5-01
CUSTOMER PROBLEM ANALYSIS CHECK
ABS Check Sheet
Inspector's
:
Name
Registration No.
Customer's Name Registration Year / /
Frame No.
Date Vehicle Odometer Reading km
/ / miles
Brought In
Date Problem First Occurred / /
Frequency Problem Occurs Continuous Intermittent ( times a day)
ABS does not operate.
Symptoms ABS does not operate efficiently.
ABS Warning Light Remains ON Does not Light Up
Abnormal
TRAC Indicator
Check Item Normal Does not Light Up
Light
1st Time Normal Code Malfunction Code (Code )
DTC Check
2nd Time Normal Code Malfunction Code (Code )
1997 SUPRA (RM502U)
Author : Date : 669
DI-442
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
DI4V6-01
PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) Check the Indicator,
When the ignition switch is turned ON, check that the ABS
warning light goes on for 3 seconds.
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting for the ABS warning light circuit (See page DI-488 ).
F02620
(b) Check the DTC.
(1) Turn the ignition switch ON.
Short Pin
(2) Disconnect the short pin from DLC1.
DLC1
R06980
(3) Using SST, connect terminals Tc and E1 of DLC2 or
DLC2 DLC1
E1 DLC1.
SST 09843-18020
(4) Read the DTC from the ABS warning light on the
combination meter.
HINT:
If no code appears, inspect the diagnostic circuit or ABS warn-
Tc E1 Tc ing light circuit (See page DI-494 or DI-488 ).
S-17-1 Iei-23-1-A F00041
Normal Code As an example, the blinking patterns for normal code and
2 sec. codes 11 and 21 are shown on the left.
0.25
sec. (5) Codes are explained in the code table on page
0.25 DI-447 .
sec. (6) After completing the check, disconnect terminals Tc
ON and E1, and turn off the display.
If 2 or more malfunctions are indicated at the same time, the
OFF lowest numbered DTC will be displayed 1st.
Code 11 and 21
0.5 0.5
sec. sec.
1.5
4 sec. sec. 2.5 sec.
ON
OFF
Code 11 Code 21
R01346
1997 SUPRA (RM502U)
Author : Date : 670
DI-443
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
(c) Using TOYOTA hand-held tester, check the DTC.
TOYOTA
Hand-held (1) Hook up the TOYOTA hand- held tester to the
tester DLC2.
(2) Read the DTC by following the prompts on the tes-
ter screen.
Please refer to the TOYOTA hand-held tester oper-
ator's manual for further details.
DLC2
FI6997
(d) Clear the DTC.
(1) Using SST, connect terminals Tc and E1 of DLC2 or
DLC1 and remove the short pin from DLC1.
SST 09843-18020
(2) IG switch ON.
(3) Clear the DTC stored in ECU by depressing the
brake pedal 8 or more times within 5 seconds.
(4) Check that the warning light shows the normal
BR3890 code.
(5) Remove the SST from the terminals of DLC2 or
DLC1.
Short Pin
SST 09843-18020
(6) Connect the short pin to DLC1.
HINT:
Disconnecting the battery cable during repairs will not erase the
DTC in the ECU.
DLC1
R06980
TOYOTA hand-held tester (e) Using TOYOTA brake-out-box and TOYOTA hand-held
tester, measure the ECU terminal values.
ECU (1) Turn the IG switch OFF.
(2) Hook up the TOYOTA hand-held tester and TOYO-
TA break-out-box to the vehicle.
(3) Turn the IG switch ON.
(4) Read the ECU input/output values by following the
prompts on the tester screen.
TOYOTA brake-out-box N09348 HINT:
TOYOTA hand-held tester has a "Snapshot" function.
This records the measured values and is effective in the diagno-
sis of intermittent problems.
Please refer to the TOYOTA hand-held tester/TOYOTA break-
out-box operator's manual for further details.
1997 SUPRA (RM502U)
Author : Date : 671
DI-444
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
DLC1 2. SPEED SENSOR SIGNAL AND DECELERATION SEN-
E1
SOR
(a) Check the speed sensor signal and deceleration sensor.
(1) Turn the ignition switch OFF
(2) Using SST, connect terminal Ts and E1 of DLC1.
SST 09843-18020
(3) Start the engine.
Tc
Ts
lei-23-1-A F00007
(4) Check that the ABS warning light blinks.
HINT:
0.13 sec. 0.13 sec. j If the ABS warning light does not blink, inspect the ABS
warning light circuit (See page DI-488 ).
ON j If the ABS warning light is always on, inspect and repair,
deceleration sensor.
(5) Drive the vehicle faster than 45 km/h (28 mph) for
OFF several seconds.
BR3904 (6) Stop the vehicle.
(7) Using SST, connect terminals Tc an E1 of DLC1.
SST 09843-18020
(8) Read the number of blinks of the ABS warning light.
HINT:
j See the list of DTC shown on the next page.
j If every sensor is normal, a normal code is output (A cycle
of 0.25 sec. ON and 0.25 sec. OFF is repeated).
j If 2 or more malfunctions are indicated at the same time,
the lowest numbered code will be displayed 1st.
Malfunction Code (Example Code 72, 76)
7 2 7 6
ON
OFF
1.5 sec. 2.5 sec. 4 sec.
0.5 sec. 0.5 sec.
0.5 sec. 0.5 sec. Repeat
BR3893
(9) After doing the check, disconnect terminals Ts and
E1, Tc and E1 of DLC1, and turn ignition switch OFF.
1997 SUPRA (RM502U)
Author : Date : 672
DI-445
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
(b) Using TOYOTA hand-held tester, check the DTC.
TOYOTA
Hand-held (1) Do step (1) - (6) on the previous page.
tester (2) Hook up the TOYOTA hand- held tester to the
DLC2.
(3) Read the DTC by following the prompts on the tes-
ter screen.
Please refer to the TOYOTA hand-held tester oper-
DLC2
ator's manual for farther details.
FI6997
DTC of speed sensor check function:
Code No. Diagnosis Trouble Area
j Right front speed sensor
71 Low output voltage of right front speed sensor j Sensor installation
j Sensor Rotor
j Left front speed sensor
72 Low output voltage of left front speed sensor j Sensor installation
j Sensor Rotor
j Right rear speed sensor
73 Low output voltage of right rear speed sensor j Sensor installation
j Sensor Rotor
j Left rear speed sensor
74 Low output voltage of left rear speed sensor j Sensor installation
j Sensor Rotor
75 Abnormal change in output voltage of right front speed sensor j Right front speed sensor rotor
76 Abnormal change in output voltage of left front speed sensor j Left front speed sensor rotor
77 Abnormal change in output voltage of right rear speed sensor j Right rear speed sensor rotor
78 Abnormal change in output voltage of left rear speed sensor j Left rear speed sensor rotor
j Deceleration sensor
79* Deceleration sensor is faulty
j Sensor installation
*: SPORT ABS (2JZ-GTE Engine) only
1997 SUPRA (RM502U)
Author : Date : 673
DI-446
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
3. DECELERATION SENSOR OPERATION DIAGNOSIS
SYSTEM
CAUTION:
While checking the deceleration sensor operating diagno-
sis system, the Anti-lock Brake System does not work and
brake system works as a conventional brake system.
(a) Deceleration sensor inspection check of deceleration
GL1 sensor output:
GL2
(1) Connect 3 dry batteries of 1.5 V in series.
(2) Connect VGS terminal to the batteries' positive (+)
terminal, and GGND terminal to the batteries' nega-
VGS GGND tive (-) terminal, apply about 4.5 V between VGS-
GGND terminals.
NOTICE:
Do not apply voltage of 6 V or more to terminals VGS and
GGND.
(3) Check the output of GL1 and GL2 terminals.
Symbols Condition Standard Value
GL1 Horizontal about 2.3 V
GL1 Lean forward 0.4 - about 2.3 V
Rear Side GL1 Lean rearward about 2.3 V - 4.1 V
GL2 Horizontal about 2.3 V
GL2 Lean forward about 2.3 V - 4.1 V
Front Side R10305
GL2 Lean rearward 0.4 - about 2.3 V
HINT:
j If the senor is tilted too much it may show the wrong value.
j If dropped, the sensor should be replaced with a new one.
j The sensor removed from the vehicle should not be
placed upside down.
1997 SUPRA (RM502U)
Author : Date : 674
DI-447
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
DI4V7-01
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code. For details
of each code, turn to the page referred to under the "See page" for the respective "DTC No." in the DTC chart.
HINT:
j Using SST 09843-18020, connect the terminals Tc and E1, and remove the short pin.
j If any abnormality is not found when inspect each inspection parts, inspect the ECU.
DTC No.
Detection Item Trouble Area
(See Page)
11 j ABS solenoid relay
Open circuit in ABS solenoid relay circuit
(DI-453 ) j Open or short in ABS solenoid relay circuit
12 j ABS solenoid relay
Short circuit in ABS solenoid relay circuit
(DI-453 ) j B+ short in ABS solenoid relay circuit
13*2 j ABS motor relay
Open circuit in ABS motor relay circuit
(DI-460 ) j Open or short in ABS motor relay circuit
14 j ABS motor relay
Short circuit in ABS motor relay circuit
(DI-460 ) j B+ short in ABS motor relay circuit
21 Open or short circuit in 2-position solenoid circuit for right front j ABS actuator
(DI-466 ) wheel j Open or short in SFRH or SFRR circuit
22 Open or short circuit in 2-position solenoid circuit for left front j ABS actuator
(DI-466 ) wheel j Open or short in SFLH or SFLR circuit
23 Open or short circuit in 2-position solenoid circuit for right rear j ABS actuator
(DI-466 ) wheel j Open or short in SRH (SRRH) or SRR (SRRR) circuit
24*1 Open or short circuit in 2-position solenoid circuit for left rear j ABS actuator
(DI-466 ) wheel j Open or short in SRLH or SRLR circuit
31*2
Right front wheel speed sensor signal malfunction
(DI-469 )
32*2
Left front wheel speed sensor signal malfunction j Right front, left front, right rear and left rear speed sensor
(DI-469 )
jOOpen or short i each speed sensor circuit
h t in h d i it
33*2
Right rear wheel speed sensor signal malfunction j Speed sensor rotor
(DI-469 )
34*2
Left rear wheel speed sensor signal malfunction
(DI-469 )
j Battery
41
Low battery positive voltage j IC regulator
(DI-475 )
j Open or short in power source circuit
43*1 Malfunction in deceleration sensor j Deceleration sensor
(DI-479 ) (constant output) j Wire harness for deceleration sensor system
44*1 j Deceleration sensor
Open or short in deceleration sensor circuit
(DI-480 ) j Open or short in deceleration sensor circuit
45*1 j Deceleration sensor
Malfunction in deceleration sensor
(DI-479 ) j Wire harness for deceleration sensor system
49
Open circuit in stop light switch circuit j Open in stop light circuit
(DI-482 )
51*2 Pump motor is locked
j ABS pump motor
(DI-484 ) Open in pump motor ground
Always j Battery
Malfunction in ECU
ON j IC regulator
IG power source circuit
(DI-485 ) j Open or short in power source circuit
1997 SUPRA (RM502U)
Author : Date : 675
DI-448
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
*1: Short ABS (2JZ-GTE Engine) only
*2: As DTC cannot be erased by replacing parts alone, do either of the following operations.
j Clear DTC (See page DI-442 ).
j At the vehicle speed of 20 km/h (12 mph), drive the vehicle for 30 sec. or more.
1997 SUPRA (RM502U)
Author : Date : 676
DI-449
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
DI4V8-01
PARTS LOCATION
SPORT AVS (2JZ-GTE Engine):
Deceleration Sensor
2JZ-GE: ABS Warning Light
ABS Control ABS Actuator
Relay
ABS ECU
2JZ-GTE:
ABS Solenoid
Relay
Rear Speed
Sensor Rotor
2JZ-GTE:
ABS Motor Relay DLC2 Rear Speed Sensor
DLC1
Front Speed Sensor
Front Speed Sensor Rotor
W02807
1997 SUPRA (RM502U)
Author : Date : 677
DI-450
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
DI7HM-01
TERMINALS OF ECU
NORMAL ABS (2JZ-GE Engine):
A18 A19
6 5 4 3 2 1 11 10 9 8 7 6 5 4 3 2 1
12 11 10 9 8 7 22 21 20 19 18 17 16 15 14 13 12
W01411
Symbols (Terminal No.) STD Voltage (V) Condition
IG1 (A18-2) - GND (A19-2,13) 10 - 14 IG switch ON
SR (A19-18) - R+ (A19-8) Below 1.5 IG switch ON, ABS warning light OFF
MR (A19-7) - R+ (A19-8) 10 - 14 IG switch ON
SFRH (A19-4) - GND (A19-2,13) 10 - 14 IG switch ON, ABS warning light OFF
SFRR (A19-1) - GND (A19-2,13) 10 - 14 IG switch ON, ABS warning light OFF
SFLH (A19-10) - GND (A19-2,13) 10 - 14 IG switch ON, ABS warning light OFF
SFLR (A19-11) - GND (A19-2,13) 10 - 14 IG switch ON, ABS warning light OFF
SRR (A19-22) - GND (A19-2,13) 10 - 14 IG switch ON, ABS warning light OFF
SRH (A19-21) - GND (A19-2,13) 10 - 14 IG switch ON, ABS warning light OFF
AST (A19-16) - GND (A19-2,13) 10 - 14 IG switch ON, ABS warning light OFF
Below 2.0 IG switch ON, ABS warning light ON
WA (A18 4) - GND (A19-2,13)
(A18-4) (A19 2 13)
10 - 14 IG switch ON, ABS warning light OFF
Below 1.5 Stop light switch OFF
STP (A18 12) - GND (A19 2 13)
(A18-12) (A19-2,13)
8 - 14 Stop light switch ON
D/G (A18-11) - GND (A19-2,13) 10 - 14 IG switch ON, ABS warning light OFF
MT (A19-9) - GND (A19-2,13) Below 1.5 IG switch ON
Tc (A18-9) - GND (A19-2,13) 10 - 14 IG switch ON
Ts (A18-8) - GND (A19-2,13) 10 - 14 IG switch ON
IG switch ON
FR+ (A19-3) - FR- (A19-14) AC generation
Slowly turn right front wheel
IG switch ON
FL+ (A19-19) - FL- (A19-20) AC generation
Slowly turn left front wheel
IG switch ON
RR+ (A18-1) - RR- (A18-7) AC generation
Slowly turn right rear wheel
IG switch ON
RL+ (A18-3) - RL- (A18-10) AC generation
Slowly turn left rear wheel
1997 SUPRA (RM502U)
Author : Date : 678
DI-451
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
Sport ABS (2JZ-GTE Engine):
A21 A20
6 5 4 3 2 1 13 12 11 10 9 8 7 6 5 4 3 2 1
121110 9 8 7 2625 2423 22 212019 18 17161514
W02803
Symbols (Terminal No.) STD Voltage (V) Condition
IG1 (A20-13) - GND (A20-12,25) 10 - 14 IG switch ON
SR (A21-7) - R+ (A20-26) 10 - 14 IG switch ON, ABS warning light OFF
MR (A21-1) - R+ (A20-26) Below 1.0 IG switch ON
SFRH (A20-2) - GND (A20-12,25) 10 - 14 IG switch ON, ABS warning light OFF
SFRR (A20-1) - GND (A20-12,25) 10 - 14 IG switch ON, ABS warning light OFF
SFLH (A21-5) - GND (A20-12,25) 10 - 14 IG switch ON, ABS warning light OFF
SFLR (A21-6) - GND (A20-12,25) 10 - 14 IG switch ON, ABS warning light OFF
SRRH (A21-11) - GND (A20-12,25) 10 - 14 IG switch ON, ABS warning light OFF
SRRR (A21-12) - GND (A20-12,25) 10 - 14 IG switch ON, ABS warning light OFF
SRLH (A20-15) - GND (A20-12,25) 10 - 14 IG switch ON, ABS warning light OFF
SRLR (A20-14) - GND (A20-12,25) 10 - 14 IG switch ON, ABS warning light OFF
AST (A21-4) - GND (A20-12,25) 10 - 14 IG switch ON, ABS warning light OFF
Below 2.0 IG switch ON, ABS warning light ON
WA (A20 11) - GND (A20 12 25)
(A20-11) (A20-12,25)
10 - 14 IG switch ON, ABS warning light OFF
Below 1.5 Stop light switch OFF
STP (A20 5) - GND (A20-12,25)
(A20-5) (A20 12 25)
8 - 14 Stop light switch ON
D/G (A20-24) - GND (A20-12,25) 10 - 14 IG switch ON, ABS warning light OFF
MT (A21-10) - GND (A20-12,25) Below 1.5 IG switch ON
Tc (A20-8) - GND (A20-12,25) 10 - 14 IG switch ON
Ts (A20-21) - GND (A20-12,25) 10 - 14 IG switch ON
IG switch ON
FR+ (A21-3) - FR- (A21-9) AC generation
Slowly turn right front wheel
IG switch ON
FL+ (A21-8) - FL- (A21-2) AC generation
Slowly turn left front wheel
IG switch ON
RR+ (A20-10) - RR- (A20-23) AC generation
Slowly turn right rear wheel
IG switch ON
RL+ (A20-22) - RL- (A20-9) AC generation
Slowly turn left rear wheel
FRO (A20-7) - GND (A20-12,25) Pulse generation Vehicle driving at about 30 km/h (19 mph)
FLO (A20-20) - GND (A20-12,25) Pulse generation Vehicle driving at about 30 km/h (19 mph)
RRO (A20-6) - GND (A20-12,25) Pulse generation Vehicle driving at about 30 km/h (19 mph)
RLO (A20-19) - GND (A20-12,25) Pulse generation Vehicle driving at about 30 km/h (19 mph)
GL1 (A20-4) - GND (A20-12,25) 0.5 - 4.5 V IG switch ON
GL2 (A20-16) - GND (A20-12,25) 0.5 - 4.5 V IG switch ON
VGS (A20-3) - GND (A20-12,25) 4.5 - 5.5 V IG switch ON
1997 SUPRA (RM502U)
Author : Date : 679
DI-452
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
DI4VA-01
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each
problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
NOTICE:
When removing the ECU, turn the IG switch OFF.
Symptoms Inspection Circuit See page
Only when 1. - 4. are all normal and the problem is still occurring, replace the ABS
ECU.
1. Check the DTC, reconfirming that the normal code is output. DI-442
ABS does not operate. 2. IG power source circuit. DI-475
3. Speed sensor circuit. DI-469
4. Check the ABS actuator with a checker. BR-66 or XXX
If abnormal, check the hydraulic circuit for leakage (See page DI-498 ).
Only when 1. - 4. are all normal and the problem is still occurring, replace the ABS
ECU.
1. Check the DTC, reconfirming that the normal code is output. DI-442
ABS does not operate
2. Speed sensor circuit. DI-469
efficiently.
3. Stop light switch circuit. DI-482
4. Check the ABS actuator with a checker. BR-66 or BR-66
If abnormal, check the hydraulic circuit for leakage (See page DI-498 ).
ABS warning light 1. ABS warning light circuit. DI-488
abnormal. 2. ABS ECU.
Only when 1. and 2. are all normal and the problem is still occurring, replace the
ABS ECU.
DTC check cannot be done.
1. ABS warning light circuit. DI-488
2. Tc terminal circuit. DI-494
Speed sensor signal check 1. Ts terminal circuit. DI-496 XXX
cannot be done. 2. ABS ECU.
1997 SUPRA (RM502U)
Author : Date : 680
DI-453
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
DI4VB-01
CIRCUIT INSPECTION
DTC 11, 12 ABS Solenoid Relay Circuit
CIRCUIT DESCRIPTION
This relay supplies power to each ABS solenoid. After the ignition switch is turned ON, if the initial check is
OK, the relay goes on.
DTC No. DTC Detecting Condition Trouble Area
Conditions (1) and (2) continue for 0.2 sec. or more:
(1) ABS solenoid relay terminal (SR)
j ABS solenoid relay
11 voltage: Below 1.5V
j Open or short in ABS solenoid relay circuit
(2) Solenoid relay monitor terminal (AST)
voltage: 0 V
Conditions (1) and (2) continue for 0.2 sec. or more:
(1) ABS solenoid relay terminal (SR)
j ABS solenoid relay
12 voltage: Battery positive voltage
j B+ short in ABS solenoid relay circuit
(2) Solenoid relay monitor terminal (AST)
voltage: Battery positive voltage
Fail safe function:
If trouble occurs in the ABS solenoid relay circuit, the ECU cuts off current to the ABS solenoid relay and
prohibits ABS control.
1997 SUPRA (RM502U)
Author : Date : 681
DI-454
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
WIRING DIAGRAM
2JZ-GE Engine (NORMAL ABS): ABS ECU
1 ABS Control Relay 4 2 7
R R V V MR
A8 A8 IB6 A19
Motor
2 Relay 3 13 8 R+
R V-W V-W
A9 A8 IB6 A19
2 6 Solenoid
W-B
ALT ABS No.1
2 A9 Relay
1
1 L-B L-B 18 SR
A9 IB6 A19
R/B
No.2 21 2 A8 A9 5 DLC1
L-W
L
2 A6 A6 4
1
1 2A
6
W-B ABS ECU
B
A6
W-B
5 Y-G 5 16
Battery Y-G A19 AST
A6 IB6
EA 3 G-W 6 G-W 9 MT
A6 IB6 A19
ABS Actuator
2JZ-GTE Engine (SPORT ABS):
R/B No.5
R ABS Solenoid ABS ECU
5
1 Relay
1 7 SR
2 6 L-B L-B
W-B 2 5 IB6 A21
2 5
ABS No.1
4 V-W 13 26
V-W R+
5 IB6 A20
R/B 3 5
No.2 21
5 5
ALT
L-W
DLC1
1
4 A6
1 2A
B
Battery ABS ECU
EA
5 Y-G 5 4
A6
Y-G AST
IB6 A21
ABS Actuator
F02626
F02627 F02628
1997 SUPRA (RM502U)
Author : Date : 682
DI-455
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
INSPECTION PROCEDURE (2JZ-GE Engine)
1 Check voltage between terminals A9 - 2 and A9 - 6 of ABS control (solenoid)
relay connector.
LOCK PREPARATION:
Disconnect the ABS control (solenoid) relay connector.
CHECK:
A9
Measure voltage between terminals A9 - 2 and A9 - 6 of ABS
(+) control (solenoid) relay harness side connector.
OK:
Voltage: 10 - 14 V
(-)
F02629
F02630 F02631
NG Check and repair harness or connector.
OK
2 Check continuity between terminal A9 - 5 of ABS control (solenoid) relay con-
nector and terminal A19 - 16 of ABS ECU.
CHECK:
A9 Check continuity between terminal A9 - 5 of ABS control (sole-
5 noid) relay connector and terminal A19 - 16 of ABS ECU.
ABS Solenoid
OK:
Relay
Continuity
A6 A6 HINT:
There is a resistance of 26 40 between terminals A6 - 4 and
A6 - 5 of ABS actuator.
4 4
ABS A6 A6
Actuator
5
A19 5
ECU
16
W02799
NG Repair or replace harness or ABS actuator.
OK
1997 SUPRA (RM502U)
Author : Date : 683
DI-456
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
3 Check ABS control (solenoid) relay.
CHECK:
Open
Check continuity between each terminal of ABS control (sole-
A8 A9
Continuity noid) relay.
OK:
Terminals A9 - 1 and A8 - 3 Continuity (Reference value 80 )
Terminals A9 - 5 and A9 - 6 Continuity
Terminals A9 - 2 and A9 - 5 Open
Continuity CHECK:
A8 (a) Apply battery voltage between terminals A9 - 1 and A8
Open - 3.
(b) Check continuity between each terminal of ABS control
(solenoid) relay.
F03349
(-) (+) OK:
F02634 F02635
Terminals A9 - 5 and A9 - 6 Open
Terminals A9 - 2 and A9 - 5 Continuity
NG Replace ABS control relay.
OK
4 Check for open and short in harness and connector between ABS control
(solenoid) relay and ABS ECU (See page IN-28 ).
NG Repair or replace harness or connector.
OK
If the same code is still output a after the DTC is deleted, check the contact condition of each con-
nection.
If the connections are normal, the ECU may be defective.
1997 SUPRA (RM502U)
Author : Date : 684
DI-457
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
INSPECTION PROCEDURE (2JZ-GTE Engine)
1 Check voltage between terminals 1 and 2 of R/B No.5 (for ABS solenoid relay).
LOCK PREPARATION:
Remove ABS solenoid relay from R/B No.5.
R/B No.5 CHECK:
Measure voltage between terminals 1 and 2 of R/B No.5 (for
ABS solenoid relay).
OK:
(-) (+)
Voltage: 10 - 14 V
F02629
F02636 F02637
NG Check and repair harness or connector.
OK
1997 SUPRA (RM502U)
Author : Date : 685
DI-458
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
2 Check continuity between terminal 3 of R/B No.5 (for ABS solenoid relay) and
terminal A21 - 4 of ABS ECU.
CHECK:
Check continuity between terminal 3 of R/B No.5 (for ABS sole-
noid relay) and terminal A21 - 4 of ABS ECU.
OK:
3 Continuity
ABS Solenoid HINT:
Relay There is a resistance of 26 40 between terminals A6 - 4 and
A6 A6 A6 - 5 of ABS actuator.
4 4
ABS A6 A6
Actuator
5 5
A21
4
ECU
F02638
NG Repair or replace harness or ABS actuator.
OK
1997 SUPRA (RM502U)
Author : Date : 686
DI-459
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
3 Check ABS solenoid relay.
PREPARATION:
3 2 1 Remove solenoid relay from R/B No.5.
CHECK:
Check continuity between each terminal of ABS solenoid relay.
OK:
5 4 Terminals 4 and 6 Continuity (Reference value 80 )
6
Terminals 2 and 3 Continuity
Open Terminals 1 and 3 Open
Continuity CHECK:
(a) Apply battery voltage between terminals 4 and 6.
(b) Check continuity between each terminal of ABS solenoid
Continuity
relay.
Continuity OK:
Open Terminals 2 and 3 Open
Terminals 1 and 3 Continuity
F02639
F02640 (+) (-) NG Replace ABS control relay.
F02641 F02642
OK
4 Check for open and short in harness and connector between ABS solenoid relay
and ABS ECU (See page IN-28 ).
NG Repair or replace harness or connector.
OK
If the same code is still output after the DTC is deleted, check the contact condition of each con-
nection.
If the connections are normal, the ECU may be defective.
1997 SUPRA (RM502U)
Author : Date : 687
DI-466
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
DI4VD-01
DTC 21, 22, 23, 24 ABS Actuator Solenoid Circuit
CIRCUIT DESCRIPTION
This solenoid goes on when signals are received from the ECU and controls the fluid pressure acting on the
brake cylinders, thus controlling the braking force.
DTC No. DTC Detecting Condition Trouble Area
Conditions (1) through (3) continue for 0.05 sec. or more:
(1) ABS solenoid relay terminal (SR) voltage:
Below 1.5V
j ABS actuator
21 (2) Voltage of ABS ECU terminal AST:
j Open or short in SFR circuit
Battery positive voltage
(3) When power transistor of ECU is ON, voltage of terminal
SFR is 0 V or battery positive voltage.
Conditions (1) through (3) continue for 0.05 sec. or more:
(1) ABS solenoid relay terminal (SR) voltage:
Below 1.5V
j ABS actuator
22 (2) Voltage of ABS ECU terminal AST:
j Open or short in SFL circuit
Battery positive voltage
(3) When power transistor of ECU is ON, voltage of terminal
SFL is 0 V or battery positive voltage.
Conditions (1) through (3) continue for 0.05 sec. or more:
(1) ABS solenoid relay terminal (SR) voltage:
Below 1.5V
(2) Voltage of ABS ECU terminal AST: j ABS actuator
23
Battery positive voltage j Open or short in SRH (SRRH) or SRR (SRRR) circuit
(3) When power transistor of ECU is ON, voltage of terminal
SRH (SRRH) or SRR (SRRR) is 0 V or battery positive volt-
age.
Conditions (1) through (3) continue for 0.05 sec. or more:
(1) ABS solenoid relay terminal (SR) voltage:
Below 1.5V
j ABS actuator
24* (2) Voltage of ABS ECU terminal AST:
j Open or short in SRLH or SRLR circuit
Battery positive voltage
(3) When power transistor of ECU is ON, voltage of terminal
SRLH or SRLR is 0 V or battery positive voltage.
Fail safe function:
If trouble occurs in the ABS actuator solenoid circuit, the ECU cuts off current to the ABS solenoid relay and
prohibits ABS control.
*: SPORT ABS (2JZ-GTE Engine) only
1997 SUPRA (RM502U)
Author : Date : 694
DI-467
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
WIRING DIAGRAM
2JZ-GE Engine (NORMAL ABS):
1 ABS Control Relay
R R A8
Motor
2 Relay
R A9 ABS ECU
6 Solenoid ABS ECU
2 A9 Relay
2
ALT ABS No.1
R/B A9 5 DLC1
No.2 21 ABS Pump L-W
Monitor
Motor A6 4 5 4 11
B-R B-R SFLR
A7 IB5 A19
1 1 B-Y 8 B-Y 10
W-B
A7 IB5 A19 SFLH
1 2A 6 3 1
Y-R Y-R SFRR
A7 IB5 A19
2 7 Y 4
Y
B
A7 IB5 A19 SFRH
8 P-L 5 P-L 22
◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo