Page 779 of 1807
F03346F03347F03348
2JZ-GE Engine (NORMAL ABS):
2JZ-GTE Engine (SPORT ABS):Battery
ABS Control RelayJ/B No.1
(Motor
Relay)
(Solenoid
Relay)
W-B
1
2
6
A9
4
3
1
4
A9B-R
EA1
6
23 B-R
22
DLC1 Short Pin
L16
IJ1
A18
4
LLL
IF212
L42
ABS
Warning
Light
Y
GAUGE
ABS ECU1J1E
512
25
ABS ActuatorABS ECU
12 V
WA
EA
Battery
R/B No.5
ABS
Solenoid Relay15
5
5555 26
4
5 3
W-B
EA
ABS Actuator
B-R
EA16
23 B-R
Short Pin
DLC1
22L16
IJ1L
L
L11A20WA12 V ABS ECU
ABS
Warning
Light
L4
IF212
2 Y
GAUGE J/B No.1
1J
1E
12 5
ABS & TRAC
ECU DI-488
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
716 Author: Date:
1997 SUPRA (RM502U)
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
If the ECU detects trouble, it lights the ABS warning light while at the same time prohibiting ABS control. At
this time, the ECU records a DTC in memory.
After removing the short pin of the DLC1, connect terminals Tc and E1 of the DLC1 or DLC2 to make the
ABS warning light to blink and output the DTC.
WIRING DIAGRAM
DI4VL-01
Page 780 of 1807
F02629F03349F03350
LOCK
Open
ContinuityA8A9
Continuity
F02629F03351F03352
OpenContinuity
A8 A9
(+)
(-) LOCK
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
DI-489
717 Author: Date:
1997 SUPRA (RM502U)
INSPECTION PROCEDURE
2JZ-GE Engine:
Troubleshooting in accordance with the chart below for each trouble symptom.
ABS warning light does not light upGo to step 1
ABS warning light remains onGo to step 3
1 Check ABS warning light.
See Combination Meter Troubleshooting on page BE-2.
NG Replace bulb or combination meter assembly.
OK
2 Check ABS control (solenoid) relay.
PREPARATION:
Disconnect the connectors from ABS control (solenoid) relay.
CHECK:
Check continuity between each terminal of ABS control (sole-
noid) relay.
OK:
Terminals A9 - 1 and A8 - 3Continuity (Reference value 80 W)
Terminals A9 - 5 and A9 - 6Continuity
Terminals A9 - 2 and A9 - 5Open
CHECK:
(a) Apply battery positive voltage between terminals A9 - 1
and A8 - 3.
(b) Check continuity between each terminal of ABS solenoid
relay.
OK:
Terminals A9 - 5 and A9 - 6Open
Terminals A9 - 2 and A9 - 5Continuity
Page 782 of 1807
F02629F03355
F03356
LOCK
Open
Continuity
Continuity
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
DI-491
719 Author: Date:
1997 SUPRA (RM502U)
5 Check ABS control (solenoid) relay (See step No.2).
NG Replace ABS control relay.
OK
Repair or replace and check for short in harness and connector between DLC1 and ABS control
(solenoid) relay (See page IN-18).
2JZ-GTE Engine:
Troubleshoot in accordance with the chart below for each trouble symptom.
ABS warning light does not light upGo to step 1
ABS warning light remains onGo to step 3
1 Check ABS warning light.
See combination meter troubleshooting on page BE-2.
NG Replace bulb or combination meter assembly.
OK
2 Check ABS solenoid relay.
PREPARATION:
Remove solenoid relay from R/B No.5.
CHECK:
Check continuity between each terminal of ABS solenoid relay.
OK:
Terminals 4 and 6Continuity (Reference value 80 W)
Terminals 2 and 3Continuity
Terminals 1 and 3Open
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 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 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
Page 794 of 1807
DI4VS-01
- DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI-503
731 Author: Date:
1997 SUPRA (RM502U)
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Using SST 09843-18020, connect the terminals Tc and E
1.
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 ºSee pageº for the respective ºDTC No.º in the DTC chart.
DTC No.
(See Page)Detection ItemTrouble Area
11
(DI-509)Throttle control relay circuit open
Throttle control relay
TRAC fuse
Wire harness and connector (throttle control relay circuit)
Throttle control ECU
12
(DI-509)Throttle control relay circuit short
Throttle control relay
Wire harness and connector (throttle control relay circuit)
Throttle control ECU
21
(DI-513)Sub-throttle valve motor circuit open or short
Sub-throttle valve motor
Wire harness and connector (sub-throttle valve motor and
E01 circuit)
Throttle control ECU
22
(DI-513)Sub-throttle valve motor malfunction
Sub-throttle valve motor
Sub-throttle valve
Sub-throttle position sensor
Wire harness and connector (E1 circuit)
Throttle control ECU
23
(DI-516)Throttle body malfunction
Sub-throttle valve
Sub-throttle position sensor
Throttle control ECU
24
(DI-519)Sub-throttle position sensor leakage/sub-throttle valve stuck
Sub-throttle valve
Sub-throttle position sensor
Wire harness and connector (E1 circuit)
Throttle control ECU
31
(DI-522)Throttle position sensor signal malfunction
Throttle position sensor
Wire harness and connector (throttle position senor and E1
circuit)
Throttle control ECU
32
(DI-526)Sub-throttle position sensor signal malfunction
Sub-throttle position sensor
Sub-throttle valve motor
Sub-throttle valve
Wire harness and connector (sub-throttle position senor and
E1 circuit)
Throttle control ECU
41
(DI-530)Engine revolution signal open or short
Wire harness and connector (NE circuit)
ECM
Throttle control ECU
42
(DI-532)ECM malfunction
Wire harness and connector (EFIF circuit)
ECM
Throttle control ECU
43
(DI-534)ECM communication circuit malfunction
Wire harness and connector (EFI+ and EFI- circuit)
ECM
Throttle control ECU
51
(DI-535)Power source voltage down
(sub-throttle valve in a bad condition)Wire harness and connector (+B and E01 circuit)
Throttle control ECU
Page 797 of 1807
DI7HK-01
R00463
13 12 11
26 25 24 23 22 21 20 19 18 17 16 15 14 16 15 14 13 12 11 10 91 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 Throttle Contrl ECU
T15T16
DI-506
- DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
734 Author: Date:
1997 SUPRA (RM502U)
TERMINALS OF ECU
Symbols (Terminal No.)STD Voltage (V)Condition
BATT (T16-1) - E1 (T15-26)9 - 14Always
+B (T16-9) - E1 (T15-26)9 - 14IG switch ON, Engine stops
EFIB (T15-1) - E1 (T15-26)9 - 14IG switch ON, Engine stops
IDL1 (T15 4) E1 (T15 26)0 - 3IG switch ON, Throttle valve fully closedIDL1 (T15-4) - E1 (T15-26)9 - 14IG switch ON, Throttle valve fully open
VTA1 (T15 6) E1 (T15 26)0.3 - 0.8IG switch ON, Throttle valve fully closedVTA1 (T15-6) - E1 (T15-26)3.2 - 4.9IG switch ON, Throttle valve fully open
IDL2 (T15 3) E1 (T15 26)0 - 3Engine running, Sub-throttle valve fully closedIDL2 (T15-3) - E1 (T15-26)9 - 14Engine running, Sub-throttle valve fully open
VTA2 (T15 19) E1 (T15 26)0.3 - 0.8Engine running, Sub-throttle valve fully closedVTA2 (T15-19) - E1 (T15-26)3.2 - 4.9Engine running, Sub-throttle valve fully open
FRO (T16-16) - E1 (T15-26)Pulse generationVehicle driving at about 30 km/h (19 mph)
FLO (T16-8) - E1 (T15-26)Pulse generationVehicle driving at about 30 km/h (19 mph)
RRO (T16-15) - E1 (T15-26)Pulse generationVehicle driving at about 30 km/h (19 mph)
RLO (T16-7) - E1 (T15-26)Pulse generationVehicle driving at about 30 km/h (19 mph)
WT (T16 10) E1 (T15 26)0 - 3IG switch ON, TRAC OFF indicator light ONWT (T16-10) - E1 (T15-26)9 - 14IG switch ON, TRAC OFF indicator light OFF
IND (T16 2) E1 (T15 26)0 - 3IG switch ON, SLIP indicator light ONIND (T16-2) - E1 (T15-26)9 - 14IG switch ON, SLIP indicator light OFF
CSW (T16 6) E1 (T15 26)0 - 3IG switch ON, TRAC OFF switch holded on pushingCSW (T16-6) - E1 (T15-26)9 - 14IG switch ON, TRAC OFF switch released
RLY+ (T16-4) - RLY- (T16-12)9 - 14IG switch ON
SIND (T16 11) E1 (T15 26)0 - 3IG switch ON, SNOW indicator light ONSIND (T16-11) - E1 (T15-26)9 - 14IG switch ON, SNOW indicator light OFF
SNOW (T16 14) E1 (T15 26)0 - 3IG switch ON, SNOW mode switch holded on pushingSNOW (T16-14) - E1 (T15-26)9 - 14IG switch ON, SNOW mode switch released
A (T15-12) - E01 (T15-13)Pulse generationEngine running, Throttle valve fully closed
A (T15-11) - E01 (T15-13)Pulse generationEngine running, Throttle valve fully closed
B (T15-25) - E01 (T15-13)Pulse generationEngine running, Throttle valve fully closed
B (T15-24) - E01 (T15-13)Pulse generationEngine running, Throttle valve fully closed
NE (T15-16) - E1 (T15-26)Pulse generationIdling
FAIL (T15 9) E1 (T15 26)Pulse generationIG switch ON (normal condition)FAIL (T15-9) - E1 (T15-26)9 - 14IG switch ON (abnormal condition)
EFIF (T15 17) E1 (T15 26)0 - 2IG switch ON, ECM normal conditionEFIF (T15-17) - E1 (T15-26)4.5 - 5.5IG switch ON, ECM abnormal condition
