1999 TOYOTA CAMRY relay

DI03H±04
DI±186
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM
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 ConditionTrouble Area
11
Condition 1. or 2. continues for 0.2 sec. or more:
1. IG1 terminal voltage of ABS ECU is 9.5 ± 18.5 V, and
when the solenoid relay is ON.*
1
2. With solenoid relay ON driving, when IG1 terminal of
ABS ECU is less than 9.5 V.*1

ABS solenoid relay

ABS solenoid relay circuit

ECU
12Immediately after IG switch has been turned ON, when the
solenoid relay is OFF.*2

ECU
*1 Solenoid relay contact OFF condition:
All of solenoid terminal voltage is half of IG1 terminal voltage or less than.
*
2
Solenoid relay contact ON condition:
All of solenoid terminal voltage is half of IG 1 terminal voltage or more.
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.

F07147
ABS Solenoid RelayGR±R1
IJ1
GR±RABS ECU
26
A14R+
34
56
33
3
3 1
2 DLC1Engine Room
R/B No.3
GR
7
2ABS
1
3
W±L
B±G
Fusible Link Block
1
F10 F91
B±G
FL Main
Battery ALT
EAW±B4
A4A13 SR
ABS
Actuator
1
A5
A55
A53
7
A5
A5
A5
A5
A54
8
2
6R±B
W±R11
IJ2
IJ212R±B
W±R2
A14
A141
A13
A13
A13
A13
A14
A14 L±B
W±L
W±R
R±G
G±Y
LG±B13
IJ2
IJ255
6
11
12
15
14SFRH
SFRR
SFLH
SFLR
SRRH
SRRR
SRLH
SRLR 3
G±Y
LG±B
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM
DI±187
WIRING DIAGRAM

F00048
12 (+) (±)
Engine Room
R/B No. 3
3
45 6 12 (+) (±)
Engine Room
R/B No. 3
3
45 6 12 (+) (±)
Engine Room
R/B No. 3
3
45 612 (+) (±)
Engine Room
R/B No. 3
3
45 6
F07153
3
4
ABS
Actuator
ABS
Solenoid
Relay
A4
A13
ECUA5
1234
56781
5 2
6 3
7 4
8
SFRH
SFRR
SRLR
SRLH
SFLH
SFLR
SRRH
SRRR
DI±188
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM
INSPECTION PROCEDURE
1 Check voltage between terminals 1 and 2 of Engine Room R/B No. 3 (for ABS so-
lenoid relay).
PREPARATION:
Remove ABS solenoid relay from Engine Room R/B No. 3.
CHECK:
Measure the voltage between terminals 1 and 2 of Engine
Room R/B No. 3 (for ABS solenoid relay).
OK:
Voltage: 10 ± 14 V
NG Check and repair harness or connector.
OK
2 Check continuity between terminal 3 of ABS solenoid relay and terminal SRLR,
SRLH, SRRR, SRRH, SFLR, SFLH, SFRR or SFRH of ABS ECU.
CHECK:
Check continuity between terminal 3 of Engine Room R/B No.3
(for ABS solenoid relay) and terminal SRLR, SRLH, SRRR,
SRRH, SFLR, SRLH, SFRR or SFRH of ABS ECU.
OK:
Continuity
HINT:
Resistance of each solenoid coil
SRLR, SRRR, SFLR, SFRR: 4.3 W
SRLH, SRRH, SFLH, SFRH: 8.8 W
NG Repair or replace harness or ABS actuator.
OK

F00042
1 2 3
4 5 6
(+)(±)1 2 3
4 5 6
1 2 3
4 5 6 Open
Continuity
Continuity
Continuity
Open
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM
DI±189
3 Check ABS solenoid relay.
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
CHECK:
(a) Apply battery positive voltage between terminals 4 and 6.
(b) Check continuity between each terminal of ABS solenoid
relay.
OK:
Terminals 2 and 3Open
Terminals 1 and 3Continuity
NG Replace ABS solenoid relay.
OK

DI±190
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM
4 Check for open and short circuit in harness and connector between ABS sole-
noid relay and ABS ECU (See page IN±29).
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.

± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM
DI±191
DTC 13, 14 ABS Motor Relay Circuit
CIRCUIT DESCRIPTION
The ABS motor relay supplies power to the ABS pump motor. While the ABS is activated, the ECU switches
the ABS motor relay ON and operates the ABS pump motor.
DTC No.DTC Detecting ConditionTrouble Area
13
Condition 1. or 2. continues for 0.2 sec. or more:
1. ABS ECU terminal IG1 voltage is 9.5 V to 18.5 V, and
when motor relay is ON in the midst of initial check or in
operation of ABS control.*
1
2. Motor relay is ON driving in the midst of initial check or
in operation of ABS control, ABS ECU terminal IG1 volt-
age becomes 9.5 V or less.*
2

ABS motor relay

ABS motor relay circuit

ECU
14
Condition below continues for 4 sec. or more:
When the motor relay is OFF, there is open circuit in MT
terminal of ABS ECU.
*1
Relay contact OFF condition: MT terminal voltage is below 3.6 V.
*
2
Relay contact ON condition: MT terminal voltage is 3.6 V or above.
Fail safe function:
If trouble occurs in the ABS motor relay circuit, the ECU cuts off current to the ABS solenoid relay and prohib-
its ABS control.
DI03I±04

F07146
B±G
Fusible
Link
Block
F10 1
F9
1
FL
Main B±G
Battery3
3ABSABS Motor
Relay
2 13
43
3 Engine Room R/B No.3
GR±R GR±R1
IJ126
A14 R+ABS ECU
GR±L1
A13 MR
W±R2
A4
A41
W±B
EAABS Actuator
3
A4R±W10
A13 MT ALT
1
2 DI±192
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM
WIRING DIAGRAM

F00049
1 (+) (±)
Engine Room
R/B No. 3
2
34 1 (+) (±)
Engine Room
R/B No. 32
34 1 (+) (±)
Engine Room
R/B No. 32
34
1 (+) (±)
Engine Room
R/B No. 3
2
34
F07154
3 3
ECU ECU
ECU
ABS
Motor
Relay2
A4
A4
A18
MT
2
2
ECU
ABS
Actuator
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM
DI±193
INSPECTION PROCEDURE
1 Check voltage between terminal 1 of Engine Room R/B No. 3 (for ABS motor
relay) and body ground.
PREPARATION:
Remove ABS motor relay from Engine Room R/B No. 3.
CHECK:
Measure voltage between terminal 1 of Engine Room R/B No.
3 (for ABS motor relay) and body ground.
OK:
Voltage: 10 ± 14 V
NG Check and repair harness or connector.
OK
2 Check continuity between terminal 2 of ABS motor relay and terminal MT of ABS
ECU.
CHECK:
Check continuity between terminal 2 of Engine Room R/B No.3
(for ABS motor relay) and terminal MT of ABS ECU.
OK:
Continuity
HINT:
There is a resistance of 4 ± 6 W between terminals A4 ± 2 and
A4 ± 3 of ABS actuator.
NG Repair or replace harness or ABS actuator.
OK