TOYOTA CAMRY 1999 Service Repair Manual

F00073
ECU±IG
Instrument
Panel J/BECU±IG
Instrument
Panel J/BECU±IG
Instrument
Panel J/B
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±559
794 Author: Date:
INSPECTION PROCEDURE
1 Check ECU±IG fuse.
PREPARATION:
Remove ECU±IG fuse from Instrument Panel J/B.
CHECK:
Check continuity of ECU±IG fuse.
OK:
Continuity
NG Check for short circuit in all the harness and
components connected to ECU±IG fuse (See
the attached wiring diagram.)
OK
2 Check battery positive voltage.
OK:
Voltage: 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

F00067
IG1
GND ON
(+) (±) IG1
GND ON
(+) (±) IG1
GND ON
(+) (±)IG1
GND ON
(+) (±)
F00068
LOCK
GND (+)
(±) LOCK
GND (+)
(±) LOCK
GND (+)
(±)LOCK
GND (+)
(±)
DI±560
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
795 Author: Date:
3 Check voltage between terminals IG1 and GND of ABS actuator connector.
PREPARATION:
Disconnect ABS actuator connector.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure voltage between terminals IG1 and GND of ABS
actuator harness side connector.
OK:
Voltage: 10 ± 14 V
OK Check and replace ABS ECU.
NG
4 Check continuity between terminals GND of ABS actuator connector and body
ground.
CHECK:
Measure resistance between terminal GND of ABS actuator
harness side connector and body ground.
OK:
Resistance: 1 W or less
NG Repair or replace harness or connector.
OK
Check for open circuit in harness and connector between ABS ECU and ECU±IG
(See page IN±31).

F00125
MAIN
Battery ALT F4B±R
F91B
1C
STOP
B±G4
1 Instrument Panel J/B
FL Block
1 7 WA6
21S 5IK3 J28
G±WECU
J27
1RSTP
Stop Light SwitchJ/C
7
G±R
H10Light Failure
Sensor R
W±B A
R9 R11 C14
BP BL 11R
2
4
G±W G±W G±WG±W 1
Instrument
Panel J/B
2 1
G±RG±R
W±B W±B
W±B H10R9
R11
J/C
A A High
Mounted
Stop
LightRight
Stop
LightLeft
Stop
Light
J405 2
12
2
5
W±B
W±B
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±561
796 Author: Date:
DTC 58 Stop Light Switch Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
49
Stop light switch circuit is open, and stop light switch
voltage is in the level between 65 % or more and less
than 93 % of the battery voltage.
Stop light switch

Stop light switch circuit

ECU
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check operation of stop light.
CHECK:
Check that stop light lights up when brake pedal is depressed and turns off when brake pedal is released.
NG Repair stop light circuit (See page BE±36).
OK
DI046±09

F00069
STP (+) (±)
DI±562
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
797 Author: Date:
2 Check voltage between terminal STP of ABS actuator and body ground.
PREPARATION:
Disconnect ABS actuator connector.
CHECK:
Measure voltage between terminal STP of ABS actuator har-
ness side connector and body ground when brake pedal is de-
pressed.
OK:
Voltage: 8 ± 14 V
OK Check and replace ABS ECU.
NG
3 Check for open circuit in harness and connector between ABS 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±545).

± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±563
798 Author: Date:
DTC 62 ABS ECU Malfunction
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
62ABS ECU continuously detects the proper operation of
ABS.
Battery

ECU
Fail safe function:
If trouble occurs in the power source circuit, the ECU cuts off current to the ABS solenoid valve relay and
prohibits ABS control.
INSPECTION PROCEDURE
1 Is DTC output?
Check DTC on page DI±539.
YES Repair circuit indicated by the code output.
NO
2 Is normal code displayed?
YES Check for short circuit in harness and connec-
tor between DLC1 or DLC2 and ABS ECU
(See page IN±31).
NO
3 Does ABS warning light go off?
YES Check for open and short circuit in harness and
connector of Tc circuit between ECU and DLC2
or DLC1.
NO
DI047±06

F00067
ON
IG1
(+) (±)
GND
DI±564
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
799 Author: Date:
4 Check voltage between terminals IG1 and GND of ABS actuator connector.
PREPARATION:
Disconnect ABS actuator connector.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure voltage between terminals IG1 and GND of ABS
actuator harness side connector.
OK:
Voltage: 10 ± 14 V
NG Check for open and short circuit in harness and
connector between ECU±IG fuse and ABS ac-
tuator (See page IN±31).
OK
5 Check connection of ABS actuator connector.
CHECK:
Check the connection of the ABS actuator connector and check the ABS warning light goes off.
OK Repair or replace harness or connector.
NG
Check and replace ABS ECU.

F00096
J/C
J4 D
ABS 7
C
R±LC10
1D
GAUGE
A6 4
DLC2ECU
Instrument
Panel J/BABS
Warning
Light
210
IG312
C10
DR±L R±L
WA 21
14 R±LJ/C
J29
C
C R±L
R±LR±L
IK3
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±565
800 Author: Date:
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
If the ECU detects any 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 2
1 Check ABS warning light.
See combination meter troubleshooting on page BE±2.
NG Repair bulb or combination meter assembly.
OK
Check for open circuit in harness and connector between GAUGE fuse, DLC2 and ABS ECU
(See page IN±31).
DI048±08

DI±566
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
801 Author: Date:
2 Is DTC output?
Check DTC on page DI±539.
YES Repair circuit indicated by the code output.
NO
Check for short circuit in harness and connector between ABS warning light, DLC1, DLC2, and
ECU (See page IN±31).

F00120
LG±RECU
A6 IK212 J/C
J3
E1
J23: (5S±FE)4
J22: (1MZ±FE)B Tc
A12
3LG±R LG±R
LG±RB B
Tc
E
1J/C
A ADLC2
BR
DLC1
11II3
ECBR
BR
BR311
BRTc II3J/C
J8
J7C
B 6
LG±RECU
A6 IK212 J/C
J3
E1
J23: (5S±FE)4
J22: (1MZ±FE)B Tc
A12
3LG±R LG±R
LG±RB B
Tc
E
1J/C
A ADLC2
BR
DLC1
11II3
ECBR
BR
BR311
BRTc II3J/C
J8
J7C
B 6
P±B (1MZ±FE)
LG±R (5S±FE)
F02607 F00445F02612
DLC2
DLC1
Tc E
1
Tc E
1
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
DI±567
802 Author: Date:
Tc Terminal Circuit
CIRCUIT DESCRIPTION
Connecting between terminals Tc and E1 of 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.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure voltage between terminals Tc and E
1 of DLC2 or
DLC1.
OK:
Voltage: 10 ± 14 V
OK If ABS warning light does not blink even after Tc
and E
1 are connected, the ECU may be defec-
tive.
NG
DI049±08

DI±568
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (BOSCH Made)
803 Author: Date:
2 Check for open and short circuit in harness and connector between ABS ECU
and DLC2 or DLC1, DLC2 or DLC1 and body ground (See page IN±31).
NG Repair or replace harness or connector.
OK
Check and replace ABS ECU.