1996 TOYOTA TERCEL warning light

DI98C-01
R03953
A13
1 2 3 4 5 6
7 8 9 10 11 1213
14 15
16 17 18 19 20 21 22 23 24 25 2612 11 12 3 4 5 6 7 8 9 10
A12
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
DI-1 17
1996 TERCEL (RM440U)
TERMINALS OF ECU
Symbols (Terminal No.)Wiring ColorConditionSTD Voltage (V)
IG1 (A12-5) - GND (A13-7)B-Y - W-BIG switch ON10 - 14
SR (A12-20) - R+ (A12-4)G-B - L-BIG switch ON9 - 14
MR (A12-7) - R+ (A12-4)G-R - L-BIG switch ONBelow 1.0
SFRR (A13-5) - GND (A13-7)Y-R - W-BIG switch ON ABS warning light OFF10 - 14
SFRH (A13-6) - GND (A13-7)Y - W-BIG switch ON ABS warning light OFF10 - 14
SFLR (A12-2) - GND (A13-7)R-B - W-BIG switch ON ABS warning light OFF10 - 14
SFLH (A12-1) - GND (A13-7)P - W-BIG switch ON ABS warning light OFF10 - 14
SRRR (A12-15) -
GND (A13-7)L-W - W-BIG switch ON ABS warning light OFF10 - 14
SRRH (A12-14) -
GND (A13-7)R-W - W-BIG switch ON ABS warning light OFF10 - 14
SRLR (A13-11) - GND (A13-7)G-Y - W-BIG switch ON ABS warning light OFF10 - 14
SRLH (A13-12) -
GND (A13-7)Y-B - W-BIG switch ON ABS warning light OFF10 - 14
AST (A12-8) - GND (A13-7)LG - W-BIG switch ON ABS warning light OFF10 - 14
MT (A12-26) - GND (A13-7)LG-B e W-BIG switch ONBelow 1.5
WA (A12 18) GND (A13 7)RL WBIG switch ON ABS warning light ONBelow 2.0WA (A12-18) - GND (A13-7)R-L - W-BIG switch ON ABS warning light OFF10 - 14
STP (A12 12) GND (A13 7)GW WBStop light switch OFFBelow 1.5STP (A12-12) - GND (A13-7)G-W - W-BStop light switch ON8 - 14
Tc (A12-25) - GND (A13-7)P-B - W-BIG switch ON10 - 14
Ts (A12-24) - GND (A13-7)L - W-BIG switch ON10 - 14
FR+ (A12-10) - FR- (A12-9)B - WIG switch ON Slowly turn right front wheelAC generation
FL+ (A12-22) - FL- (A12-23)R - GIG switch ON Slowly turn left front wheelAC generation
RR+ (A13-8) - RR- (A13-9)L - LGIG switch ON Slowly turn right rear wheelAC generation
RL+ (A13-3) - RL- (A13-2)V - PIG switch ON Slowly turn left rear wheelAC generation

DI4LT-02
DI-1 18
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
1996 TERCEL (RM440U)
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 page for troubleshooting.
SymptomsSuspected AreaSee page
ABS does not operate
Only when 1 - 4 are all normal and the problem is still occurring, replace the ABS
ECU
6. Check the DTC, reconfirming that the normal code is output
7. IG power source circuit
8. Speed sensor circuit
9. Check the ABS actuator with a checker
If abnormal, check the hydraulic circuit for leakage (See page DI-145).
DI-1 11
DI-132
DI-128
BR-35
ABS does not operate effi-
ciently
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
2. Speed sensor circuit
3. Stop light switch circuit
4. Check the ABS actuator with a checker
If abnormal, check the hydraulic circuit for leakage (See page DI-145)
DI-1 11
DI-128
DI-136
BR-35
ABS warning light abnormal1. ABS warning light circuit
2. ABS ECUDI-138
-
DTC check cannot be done
Only when 1 and 2 are all normal and the problem is still occurring, replace the
ABS ECU
1. ABS warning light circuit
2. Tc terminal circuit
DI-138
DI-141
Speed sensor signal check
cannot be done1. Ts terminal circuit
2. ABS ECUDI-143
-

W00708
A6 L
Battery 2Motor
RelayABS ECU
R-L W-BL
L
A7
A7
1
6
A7
A7
4
A75 1
3
A6
Solenoid
Relay
ABS ECU
ABS ECU W-B
W-B
EA
ABS Control Relay
DLC1
22
EB
ABS ActuatorEA110 13IC2 1E
Y
23
Short Pin
A5
4
ABS ECU Y
EA1R-L R-L
R-LR-L
R-L
1 Driver Side J/B
C7
C8 7
GAUGE
Light ABS Warning 1
3
ABS ECU
A1218
WA12 V
L-R DI-138
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
1996 TERCEL (RM440U)
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 between terminals Tc and E
1 of the DLC1 to make the
ABS warning light blink and output the DTC.
WIRING DIAGRAM
DI4LZ-02

F00412
Continuity
Open A6
A7
(-)
(+)
1
62
3
45
Continuity
1
62
5 3 1 2
3 4
4 5
A7
A6Continuity
Open
(+) (-)A7
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
DI-139
1996 TERCEL (RM440U)
INSPECTION PROCEDURE
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 relay.
PREPARATION:
Disconnect the connectors from the control relay.
CHECK:
Check the continuity between each terminal of the ABS control
relay.
OK:
Terminals A7-1 and A6-3Continuity
(Reference value 80 W)
Terminals A7-5 and A7-6Continuity
Terminals A7-2 and A7-5Open
CHECK:
(a) Apply battery voltage between terminals A7-1 and A6-3.
(b) Check the continuity between each terminal of the ABS
control relay.
OK:
Terminals A7-5 and A7-6Open
Terminals A7-2 and A7-5Continuity
CHECK:
Connect the
test lead to terminal of A7-4 and the  lead to
terminal A7-5. Check the continuity between the terminals.
OK:
Continuity
If there is no continuity, connect the  test lead to terminal A7-4
and the
lead to terminal A7-5. Recheck continuity between
the terminals.
NG Replace ABS control relay.
OK

DI-140
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
1996 TERCEL (RM440U)
Repair or replace and check for open in harness and connector between DLC1 and ABS control
relay and body ground (See page IN-26).
3 Is DTC output?
Check DTC on page DI-1 11.
YES Repair circuit indicated by code output.
NO
4 Does ABS warning light go off if short pin is removed?
NO Check for short in harness and connector be-
tween warning light and DLC1 and ECU (See
page IN-26).
YES
5 Check ABS control relay (See step 2).
NG Replace ABS control relay.
OK
Repair or replace and check for short in harness and connector between DLC1 and ABS control
relay (See page IN-26).

R12884
SRS ECU
A1212 V
EA14
Tc
E
1
J/C
A A
DLC111
EC
BR
Tc
325
P-B P-B P-BABS ECU
J1
BR
R13006
TcE1
DLC1
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
DI-141
1996 TERCEL (RM440U)
Tc Terminal Circuit
CIRCUIT DESCRIPTION
Connecting between terminals Tc and E1 of the DLC1 cause 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 DLC1.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure the voltage between terminals Tc and E
1 of the
DLC1.
OK:
Voltage: 10 - 14 V
OK If ABS warning light does not blink even after Tc
and E
1 are connected, ECU may be defective.
NG
DI4M0-02

F00414
24ABS ECU
AA123DLC1
Ts
16
EC
E1TsL
B-RAEA13
B-RL12 V
J/C
J1
R13006
E1
DLC1
Tc
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
DI-143
1996 TERCEL (RM440U)
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 E
1 of the DLC1 in the engine compartment starts the check.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Ts and E1 of DLC1.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure the voltage between terminals Ts and E
1 of the
DLC1.
OK:
Voltage: 10 - 14 V
OK If ABS warning light does not blink even after Ts
and E
1 are connected, ECU may be defective.
NG
DI4M1-02

DI4M4-01
Vehicle Brought to Workshop
Customer Problem Analysis
Warning Light Check
DTC Check and Recording
Malfunction Code Clearance DI-148
DI-151
Circuit Inspection
Remains on
Malfunction Code
Symptom Simulation
DTC Check
DI-155
Identification of Problem
Normal Code
Confirmation Test
Does Not Light Up
END
1
2
3
4
7
Repair 856
Step
:Diagnostic steps permitting the use
of the TOYOTA hand-held tester.
DI-147
DI-148
DI-148
DI-148
DI-148
Malfunction Code
DTC Chart
DI-151
DTC Check and Recording
129
DI-148 Malfunction Code Clearance
10
11
Normal Code
Normal
Code
Malfunction CodeNormal
Code
,, , , , , 345101112
Malfunction Code
DI-146
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
320 Author
: Date
:
1996 TERCEL (RM440U)
SUPPLEMENTAL RESTRAINT SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Perform troubleshooting in accordance with the procedure on the following pages.