Page 3025 of 4770
F00060
STP (+) (±)
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±605
840 Author: Date:
INSPECTION PROCEDURE
1 Check voltage between terminal STP of ABS & TRAC ECU and body ground.
PREPARATION:
Remove ABS & TRAC ECU with connectors still connected.
CHECK:
Measure voltage between terminal STP of ABS & TRAC ECU
and body ground when brake pedal is depressed.
OK:
Voltage: 8 ± 14 V
OK Check and replace ABS & TRAC ECU.
NG
2 Check for open circuit in harness and connector between ABS & TRAC ECU and
stop light switch (See page IN±31).
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown on
problem symptoms table
(See page DI±583).
Page 3026 of 4770
F03413
ALTEngine Room R/B No. 3
2ABS & TRAC
Motor Relay
A8ABS & TRAC ActuatorABS
4
W±R
MTR+ GR±L
14 24
MR A15
13
F5
F4
B±GFL
Block
MAIN
Battery
EA 1 B±G
333
1
2
3
A8A8
1 23
W±BA15
A15 GR±R
R±W 1ABS & TRAC ECU
1 DI±606
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
841 Author: Date:
DTC 51 ABS Pump Motor Lock
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
51
In the midst of initial check, after the current flows to the
motor for 3 sec. and motor relay is turned OFF , then
within 0.66 sec., the condition that the motor relay
monitor is OFF continues for 0.24 sec. or more.
ABS pump motor
Fail safe function:
If any trouble occurs in the ABS & TRAC pump motor, the ECU cuts off current to the ABS & TRAC solenoid
relay and prohibits ABS control and TRAC control.
WIRING DIAGRAM
DI4KX±01
Page 3027 of 4770
F03291
(±)
(+)12A8
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±607
842 Author: Date:
INSPECTION PROCEDURE
1 Check operation of ABS & TRAC pump motor.
PREPARATION:
Disconnect the ABS & TRAC actuator connector.
CHECK:
Connect positive lead to terminal A8 ± 2 and negative lead
to terminal A8 ± 1 of the ABS & TRAC actuator connector, check
that the pump motor is operates.
OK Check for open circuit in harness and connec-
tor between ABS & TRAC motor relay, ABS &
TRAC actuator and ECU (See page IN±31).
NG
Replace ABS & TRAC actuator.
Page 3028 of 4770

F00063
ECMABS & TRAC ECU
EFI+
EFI±
TRC+
TRC±EFI+
EFI±
TRC+
TRC±
E7
E7
E7
E7A16
A16
A16
A1614 6
14
13
5W
B
L ECMABS & TRAC ECU
EFI+
EFI±
TRC+
TRC±EFI+
EFI±
TRC+
TRC±E7
E7
E7
E7A16
A16
A16
A16
21
206
14
13
5
W
B
L ECMABS & TRAC ECU
EFI+
EFI±
TRC+
TRC±EFI+
EFI±
TRC+
TRC±E7
E7
E7
E7A16
A16
A16
A166
14
13
5W
B
L
ECMABS & TRAC ECU
EFI+
EFI±
TRC+
TRC±EFI+
EFI±
TRC+
TRC±
E7
E7
E7
E7A16
A16
A16
A166
14
13
5W
B
LG
L
13
DI±608
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
843 Author: Date:
DTC 53 ECM Communication Circuit Malfunction
CIRCUIT DESCRIPTION
This circuit is used to send TRAC control information from the ABS & TRAC ECU to the ECM (TRC+, TRC±),
and engine control information from the ECM to the ABS & TRAC ECU (EFI+, EFI±).
DTC No.DTC Detecting ConditionTrouble Area
53ECM communication data malfunction is detected.
TRC+ or TRC± circuit
EFI+ or EFI± circuit
ECM
ECU
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check for open and short circuit in harness and connector between terminals
EFI+, EFI±, TRC+, TRC± of ABS & TRAC ECU and ECM (See page IN±31).
NG Repair or replace harness or connector.
OK
Check and replace ECM or ABS & TRAC ECU.
DI04S±04
Page 3029 of 4770
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±609
844 Author: Date:
DTC 61 Engine Control System Malfunction
CIRCUIT DESCRIPTION
If any trouble occurs in the engine control system, the ECU prohibits TRAC control.
DTC No.DTC Detection ConditionTrouble Area
61
Conditions 1. and 2. are detected:
1. ECM communication is normal, malfunction information
of engine system is ON, and engine speed is 500 rpm or
more , which continues for 0.48 sec. or more, and TRAC
operation start condition is concluded.
2. ECM communication is normal, malfunction information
of engine system is ON, engine speed is 500 rpm and
more which continues for 1 sec. or more, and the engine
system memorizes DTC.
Engine control system
INSPECTION PROCEDURE
1 Check the DTC for the engine (See page DI±197).
*1 Repair engine control system according to the
code output.
*2
Check for ECU connected to malfunction indicator light.
*1: Output NG code
*2: Malfunction indicator light remains ON.
DI04T±04
Page 3030 of 4770
DI±610
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
845 Author: Date:
DTC Always ON ABS & TRAC ECU Malfunction
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
Always ONABS & TRAC ECU internal malfunction is detected.ECU
Fail safe function:
If any trouble occurs in the power source circuit, the ECU cuts off current to the ABS & TRAC solenoid relay
and prohibits ABS control and TRAC control.
INSPECTION PROCEDURE
1 Is DTC output?
Check DTC on page DI±574.
YES Repair circuit indicated by the code output.
NO
2 Is normal code displayed?
YES Check solenoid relay. Check for short circuit in
harness and connector between solenoid relay
and DLC1 (See page IN±31).
NO
3 Does ABS warning light go off?
YES Check for open and short circuit in harness and
connector between ECU±IG fuse and ABS &
TRAC ECU (See page IN±31).
NO
DI1JQ±03
Page 3031 of 4770
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±611
846 Author: Date:
4 Check battery positive voltage.
CHECK:
Check the battery positive voltage.
OK:
10 ± 14 V
NG Check and repair the charging system
5S±FE engine: (See page CH±1)
1MZ±FE engine: (See page CH±1).
OK
5 Check ABS warning light.
PREPARATION:
(a) Disconnect the connector from the ABS & TRAC ECU.
(b) Turn the ignition switch ON.
CHECK:
Check the ABS warning light goes off.
OK Check and replace ABS & TRAC ECU.
NG
Check for short circuit in harness and connector between ABS warning light, DLC1, DLC2, and
ABS & TRAC ECU (See page IN±31)
Page 3032 of 4770

F00168
BatteryABS & TRAC
Solenoid Relay Engine Room R/B No. 3
3ABS & TRAC
ECU
A8 1
R±L
C 5 4
IG3 IK2 6
J/C C10
EA4ABS Warning Light 8
12 II3
G±B23 2
22 ABS & TRAC
Actuator
DLC1 Short
Pin
WA
J29 33 3 3
3
W±B4
ABS & TRAC
ECUR±L
4
R±L
II3 5
G±B
C C G±B R±LC107
ABS & TRAC ECU R±LR±L
J/C
D 1D
GAUGE Instrument Panel J/B
A16 J4 D
G±B4 W±L
2
DI±612
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
847 Author: Date:
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
If the ECU detects a 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.
Connect terminals Tc and E
1 of the DLC1 or DLC2 to make the ABS warning light blink and output the DTC.
WIRING DIAGRAM
INSPECTION PROCEDURE
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 Repair bulb or combination meter assembly.
OK
DI04V±04