Page 785 of 1807
F03361
ABS ECU
12 V
Tc
A20 A1998
*1 *2
R
R
R
IF1
11
P-B
II1 DLC1
R
*121*2P-B R
*1
*2
DLC2
11 Tc E
13
BR
BR BR
ED
IJ1 18BR
Tc E
134
NORMAL ABS (2JZ-GE Engine)
SPORT ABS (2JZ-GTE Engine)
*1:
*2:
S-17-1 Iei-23-1-A
F00041
DLC2
DLC1
E1Tc
E1
Tc
DI-494
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
722 Author: Date:
1997 SUPRA (RM502U)
Tc Terminal Circuit
CIRCUIT DESCRIPTION
Connecting terminals Tc and E1 of the DLC1 or the DLC1 or the DLC2 causes the ECU to display the DTC
by flashing the ABS warning light.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Tc and E1 of DLC2 or DLC1.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminals Tc and E1 of DLC2 or
DLC1.
OK:
Voltage: 10 - 14 V
OK If ABS warning light does not blink even after Tc
and E1 are connected, the ECU may be defec-
tive.
NG
DI4VM-01
Page 786 of 1807
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
DI-495
723 Author: Date:
1997 SUPRA (RM502U)
2 Check for open and short in harness and connector between ABS ECU and
DLC2 or DLC1, DLC2 or DLC1 and body ground (See page IN-28).
NG Repair or replace harness or connector.
OK
Check and replace ABS ECU.
Page 787 of 1807
F03362
ABS ECU
Ts 8
*1*2
IJ1 DLC1
21 15
BR
EDTc E13
16
NORMAL ABS (2JZ-GE Engine)
SPORT ABS (2JZ-GTE Engine)
*1:
*2:
YY12 VA18A20
F00007lei-23-1-A
E1
Ts
DLC1
DI-496
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
724 Author: Date:
1997 SUPRA (RM502U)
Ts Terminal Circuit
CIRCUIT DESCRIPTION
The sensor check circuit detects abnormalities in the speed sensor signal which cannot be detected with
the DTC check.
Connecting terminals Ts and E1 of the DLC1 in the engine compartment starts the check.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Ts and E1 of DLC1.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminals Ts and E1 of DLC1.
OK:
Voltage: 10 - 14 V
OK If ABS warning light does not blink even after Ts
and E1 are connected, the ECU may be defec-
tive.
NG
DI4VN-01
Page 788 of 1807
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
DI-497
725 Author: Date:
1997 SUPRA (RM502U)
2 Check for open and short in harness and connector between ABS ECU and
DLC1, DLC1 and body ground (See page IN-28).
NG Repair or replace harness or connector.
OK
Check and replace ABS ECU.
Page 789 of 1807
F03363
DI-498
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
726 Author: Date:
1997 SUPRA (RM502U)
Check for Fluid Leakage
Check for fluid leakage from actuators or hydraulic lines.
DI4VO-01
Page 790 of 1807
DI4VP-01
Vehicle Brought to Workshop
Customer Problem Analysis
P. DI-500
Check and Clear DTC (Precheck)
P. DI-501Items inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the pages for detailed explanations.
Problem Symptom ConfirmationSymptom Simulation
P. IN-18
Symptom
does not occur
Symptom
occurs
DTC Check
P.DI-501
Sensor CheckCircuit Inspection
DTC Chart
P. DI-503 Malfunction codeProblem Symptoms Chart
P. DI-508
Identification of Problem
Normal code
Repair
Confirmation Test
End
1
2
3
4
5
67
89
10
11
Step 9:
Diagnostic steps permitting the use of the
TOYOTA hand-held tester.
P DI-509 - DI-553
- DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI-499
727 Author: Date:
1997 SUPRA (RM502U)
ABS & TRACTION CONTROL SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshooting in accordance with the procedure on the following pages.
Page 791 of 1807
DI4VQ-01
TRAC Check Sheet
Inspector 's
Name:
Customer 's Name
Date Vehicle
Brought InRegistration Year Registration No.
Frame No.
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ContinuousIntermittent ( times a day)
DTC Check1st Time
2nd TimeNormal Code
Malfunction Code (Code )
Normal CodeMalfunction Code (Code )
km
miles
Check ItemNormalMalfunction
Indicator LightMalfunction Code (Code )
TRAC does not operate. (Wheels spin when starting rapidly.)
SymptomsTRAC OFF Indicator
Light Abnormal
SLIP Indicator
Light Abnormal
Remains ONBlinks Does not Light Up
Remains ON
Does not Light Up
Remains ON Does not Light UpSnow Indicator
Light Abnormal DI-500
- DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
728 Author: Date:
1997 SUPRA (RM502U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 792 of 1807
DI4VR-01
W02267
F03365
ON
OFF0.5
sec.1.5
sec.
S-17-1F02201F03525
DLC2DLC1
E1
TcTcE1
- DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI-501
729 Author: Date:
1997 SUPRA (RM502U)
PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) Check the indicator.
When the ignition switch is turned ON, check that the
TRAC OFF indicator light goes on, and when the engine
is started, check that the TRAC OFF indicator light goes
off.
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting for the TRAC OFF indicator light circuit (See page
DI-547).
(b) Check the DTC.
(1) Turn the ignition switch ON.
If the ECU stores DTC, the TRAC OFF indicator light blinks after
lighting up for 3 seconds.
The blinking pattern is shown on the left.
(2) Using SST, connect terminals Tc and E
1 of DLC2 or
DLC1.
SST 09843-18020