1999 TOYOTA CAMRY Service Repair Manual

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Page 4465 of 4592

TOYOTA CAMRY 1999 Service Repair Manual ABS (TMMK MADE)
IK 2 1IK26IK213
1 2 1 2
W
GR
ABS SPEED SENSOR
FRONT LHABS SPEED SENSOR
FRONT RH
G±W
(
SHIELDED)(
SHIELDED)
A 9 A10
R
G
1R 4
1R 515A
STOP
1C 710A
GAUGE FROM POWER SOURCE SYSTEM (
SEE P

Page 4466 of 4592

TOYOTA CAMRY 1999 Service Repair Manual IL1 1 2 IL1 3 ID1 4 ID1 9 ID1 3
2 1 2 1
Y
BR BRY
P
LP
L
ABS SPEED SENSOR
REAR LH(
SHIELDED)
(
SHIELDED)
ABS SPEED SENSOR
REAR RH A25 A26(
SHIELDED) IK3 3IK39IK38IK37IK32IK36 E 1 E 1
EAB
B4 14 11 16
B

Page 4467 of 4592

TOYOTA CAMRY 1999 Service Repair Manual ABS (TMMK MADE)
This system controls the respective brake fluid pressures acting on the disc brake cylinders of the right front wheel, left front
wheel and rear wheels when the brakes are applied in a

ABS (TMMK MADE)
This system controls the respective brake fluid pressures acting on the disc brake cylinders of the right front wheel, left front
wheel and rear wheels when the brakes are applied in a panic stop so that the wheels do not lock. This results in improved
directional stability and steerability during panic braking.
1. INPUT SIGNALS
(1) Speed sensor signal
The speed of the wheels is detected and input to TERMINALS FL+, FR+, RL+ and RR+ of the ABS actuator and ECU.
(2) Stop light SW signal
A signal is input to TERMINAL STP of the ABS actuator and ECU when the brake pedal is depressed.
2. SYSTEM OPERATION
During sudden braking the ABS actuator and ECU has signals input from each sensor, which controls the current to the
solenoid inside the actuator and lets the hydraulic pressure acting on each wheel cylinder escape to the reservoir. The pump
inside the actuator is also operating at this time and it returns the brake fluid from the reservoir to the master cylinder, thus
preventing locking of the vehicle wheels.
If the ABS actuator and ECU judges that the hydraulic pressure acting on the wheel cylinder is insufficient, the current on the
solenoid is controlled and the hydraulic pressure is increased. Holding of the hydraulic pressure is also controlled by the
ABS actuator and ECU, by the same method as above. Pressure reduction, holding and increase are repeated to maintain
vehicle stability and to improve steerability during sudden braking.
A9, A10 ABS SPEED SENSOR FRONT LH, RH
2±1 : Approx. 1.6 kW
A25, A26 ABS SPEED SENSOR REAR LH, RH
2±1 : Approx. 1.6 kW
A6 ABS ACTUATOR AND ECU
(Connect the ABS actuator and ECU connectors)
12±GROUND : Approx. 12 volts with the ignition SW at ON position and the data link connector 1
TS±E1, TC±E1 not connected
11±GROUND : Approx. 12 volts with the ignition SW at ON position and the data link connector 1
TS±E1, TC±E1 not connected
16, 19±GROUND : Always continuity
15±GROUND : Approx. 12 volts with the ignition SW at ON position
14±GROUND : Approx. 12 volts with the brake pedal depressed
17, 18±GROUND : Always approx. 12 volts
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A626 (1MZ±FE)C1030J1231A628 (5S±FE)D126 (1MZ±FE)J2231
A926 (1MZ±FE)D128 (5S±FE)J2331A928 (5S±FE)D430J27A31
A1026 (1MZ±FE)J331J28B31A1028 (5S±FE)J431J2931
A2532J7A31S631
A2632J8B31
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
325Fusible Link Block (Radiator Upper Support RH)
SYSTEM OUTLINE
SERVICE HINTS

Page 4468 of 4592

TOYOTA CAMRY 1999 Service Repair Manual : JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1C20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1D20Instrument Panel Wire and I

Page 4469 of 4592

TOYOTA CAMRY 1999 Service Repair Manual ABS (TMMK MADE)
XX
XX
XXX11
XXX
16 X XX X
X
AA AA
AAAAAAA
X X
DDDX
B
BBBB

CCC
X X 3 4 X XX X X X X X14 X X

BBB
AA AA
AAAAAAA
AA

CC

Page 4470 of 4592

TOYOTA CAMRY 1999 Service Repair Manual SRS
NOTICE: When inspecting or repairing the SRS, perform the operation in accordance with the following precautionary
instructions and the procedure and precautions in the Repair Manual for the appli

SRS
NOTICE: When inspecting or repairing the SRS, perform the operation in accordance with the following precautionary
instructions and the procedure and precautions in the Repair Manual for the applicable model year.
Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of information
when troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery.
Work must be started after 90 seconds from when the ignition switch is turned to the ºLOCKº position and the
negative (±) terminal cable is disconnected from the battery.
(The SRS is equipped with a back±up power source so that if work is started within 90 seconds from
disconnecting the negative (±) terminal cable of the battery, the SRS may be deployed.)
When the negative (±) terminal cable is disconnected from the battery, the memory of the clock and audio system will be
canceled. So before starting work, make a record of the contents memorized in the audio memory system. When work is
finished, reset the audio systems as they were before and adjust the clock. To avoid erasing the memory in each
memory system, never use a back±up power supply from outside the vehicle.
Before repairs, remove the airbag sensor if shocks are likely to be applied to the sensor during repairs.
Do not expose the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner,
center airbag sensor assembly, front airbag sensor assembly or side airbag sensor assembly directly to hot air or
flames.
Even in cases of a minor collision where the SRS does not deploy, the steering wheel pad, front passenger airbag
assembly, side airbag assembly, seat belt pretensioner, center airbag sensor assembly, front airbag sensor assembly
and side airbag sensor assembly should be inspected.
Never use SRS parts from another vehicle. When replacing parts, replace them with new parts.
Never disassemble and repair the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt
pretensioner, center airbag sensor assembly, front airbag sensor assembly or side airbag sensor assembly in order to
reuse it.
If the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner, center airbag
sensor assembly, front airbag sensor assembly or side airbag sensor assembly has been dropped, or if there are
cracks, dents or other defects in the case, bracket or connector, replace them with new ones.
Use a volt/ohmmeter with high impedance (10 kW/V minimum) for troubleshooting the system's electrical circuits.
Information labels are attached to the periphery of the SRS components. Follow the instructions on the notices.
After work on the SRS is completed, perform the SRS warning light check.
If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the Repair
Manual.

Page 4471 of 4592

TOYOTA CAMRY 1999 Service Repair Manual SRS
5A
IGN
1N 415A
CIG FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
1N 210A
ECU±B
2J 7
1G2
1W3
B 5B6A7A9A10 A12
1N 1
1J 71N 3
1V 3
IG IE AB 27 B28
12
SPIRAL
CABLE
2 121 B 14 B13 B10 B11 A5A6 1234
B±O
GR

Page 4472 of 4592

TOYOTA CAMRY 1999 Service Repair Manual C 12 C10 C9C7
2 1A 2A1
2 1C 2C1
2 1C 5C6 13 12
IG2 2
A AII3 7II311
C CA C
B B
II3 6
A A
EC B 12 B 3B19 511 3
1234
B
3 AB
B
4
7
A AB TC E1
E1 TC
SILP
L±Y
LG
GR
LG
LG±R
BR LG
LG±R B±Y
P±B
LG±R BR

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