brakes TOYOTA CAMRY 1999 Service User Guide

A07449
Fusible
Link
Block
FL
MAINStop Light Switch
B±G1B 1CSTOP
WG±WLight
Failure
Sensor 7
2
To Stop Light Instrument Panel J/B
Instrument Panel J/B
E7 15
G±W
1S 1R
1R1
2
F9
F4
BatteryECM
STP
E1 B±R
ALT
G±WA
C
J27Junction
Connector
J2845
2
G±W7 4
1
1
± DIAGNOSTICSENGINE (1MZ±FE)
DI±363
598 Author: Date:
DTC P1520 Stop Light Switch Signal Malfunction
(Only for A/T)
CIRCUIT DESCRIPTION
This signal is used to detect when the brakes have been applied. The STP signal voltage is the same as
the voltage supplied to the stop lights.
The STP signal is used mainly to control the fuel cut±off engine speed (The fuel cut±off engine speed is re-
duced slightly when the vehicle is braking.).
DTC No.DTC Detecting ConditionTrouble Area
P1520
Stop light switch does not turn off when repeating the driving at
30 km or more 10 times or more after depressing brake
(2 trip detection logic)
Short in stop light switch signal circuit

Stop light switch

ECM
WIRING DIAGRAM
DI088±06

± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
DI±423
658 Author: Date:
DTC P1520 Stop Light Switch Signal Malfunction
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling, while driving in lock±up condition, when
brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signal to ECM. Then the ECM cancels operation
of the lock±up clutch while braking is in progress.
DTC No.DTC Detecting ConditionTrouble Area
P1520No stop light switch signal to ECM during driving.
(2 trip detection logic)
Open or short in stop light switch circuit

Stop light switch

ECM
WIRING DIAGRAM
See page DI±170.
INSPECTION PROCEDURE
See page DI±170.
DI036±02

DI±472
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
707 Author: Date:
DTC P1520 Stop Light Switch Signal Malfunction
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling, while driving in lock±up condition, when
brakes are suddenly applied.
When the brake pedal is operated, this switch sends a signals to ECM. Then the ECM cancels operation
of the lock±up clutch while braking is in progress.
DTC No.DTC Detecting ConditionTrouble Area
P1520No stop light switch signal to ECM during driving.
(2 trip detection logic)
Open or short in stop light switch circuit

Stop light switch

ECM
WIRING DIAGRAM
See page DI±363.
INSPECTION PROCEDURE
See page DI±363.
DI02O±02

A09400
ECM
STP 4
E4
G±W G±WJ23 J24 1R 1R
1SJ27 J/C
AC Instrument Panel J/B
5
2 4
7
12
G±WLight
Failure
Sensor
Stop
Light
(LH) Stop
Light
(RH) G±R
2
52
5
W±B
W±B
BM High
Mount
Stop
Light
2
1R
A
A
J34
J/C
BL
1
W±B
Stop Light
Switch
2
BatteryW±B W
1C 7
STOP
41BInstrument
Panel J/B
B±R
B±R
F14
2 F14
1
ALT
F9MAIN
FL
FL Block
G±W
1
B±G
DI±108
± DIAGNOSTICSENGINE
DTC P1520 Stop Light Switch Signal Malfunction
CIRCUIT DESCRIPTION
This signal is used to detect when the brakes have been applied. The STP signal voltage is the same as
the voltage supplied to the stop lights. The STP signal is used mainly to control the fuel cut±off engine speed.
(The fuel cut±off engine speed is reduced slightly when the vehicle is braking.)
DTC No.DTC Detecting ConditionTrouble Area
P1520Stop light switch does not turn off even once vehicle is driven
(2 trip detection logic)
Short in stop light switch signal circuit

Stop light switch

ECM
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand±held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected. When troubleshooting it is useful for determining
whether the vehicle was running or stopped, the engine was warmed up or not, the air±fuel ratio was lean
or rich, etc. at the time of the malfunction.
1 Check operation of stop light.
PREPARATION:
Check if the stop lights go on and off normally when the brake pedal is operated and released.
NG Check and repair stop light circuit
(See Pub. No. RM654U, page BE±37).
DI01H±09

DI±164
± DIAGNOSTICSAUTOMATIC TRANSAXLE
DTC P1520 Stop Light Switch Signal Malfunction
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling, while driving in lock±up condition, when
brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signal to ECM. Then the ECM cancels operation
of the lock±up clutch while braking is in progress.
DTC No.DTC Detecting ConditionTrouble Area
P1520No stop light switch signal to ECM during driving.
(2 trip detection logic)
Open or short in stop light switch circuit

Stop light switch

ECM
WIRING DIAGRAM
See page DI±108.
INSPECTION PROCEDURE
See page DI±108.
DI036±05

± MAINTENANCEINSIDE VEHICLE
MA±3
46 Author: Date:
13. ACCELERATOR PEDAL
Check the pedal for smooth operation and uneven pedal effort or catching.
14. CLUTCH PEDAL (See page CL±2)
(a) Check the pedal for smooth operation.
(b) Check that the pedal has the proper freeplay.
15. BRAKE PEDAL (See page BR±5)
(a) Check the pedal for smooth operation.
(b) Check that the pedal has the proper reserve distance and freeplay.
(c) Check the brake booster function.
16. BRAKES
At a safe place, check that the brakes do not pull to one side when applied.
17. PARKING BRAKE (See page BR±8)
(a) Check that the lever has the proper travel.
(b) On a safe incline, check that the vehicle is held securely with only the parking brake applied.
18. AUTOMATIC TRANSMISSION ºPARKº MECHANISM
(a) Check the lock release button of the selector lever for proper and smooth operation.
(b) On a safe incline, check that the vehicle is held securely with the selector lever in ºPº position and all
brakes released.

MA0676B00995
MA00O±01
N21126
N21125
MA±8
± MAINTENANCEBODY
51 Author: Date:
BODY
INSPECTION
1. TIGHTEN BOLTS AND NUTS ON CHASSIS AND
BODY
Tighten these parts:

Front seat mount bolts
Torque: 37 N´m (375 kgf´cm, 27 ft´lbf)

Front suspension member±to±body mounting bolts
Torque: 181 N´m (1,850 kgf´cm, 134 ft´lbf)

Rear suspension member±to±body mounting nuts
Torque: 51 N´m (520 kgf´cm, 38 ft´lbf)
Check that the brakes work properly and do not drag.
2. FINAL INSPECTION
(a) Check the operation of the body parts:

Hood:
Auxiliary catch operates properly
Hood locks securely when closed

Front and rear doors:
Door lock operates properly
Doors close properly

Luggage compartment door and back door:
Door lock operates properly

Seats:
Seat adjusts easily and locks securely in any posi-
tion
Front seat back locks securely in any position
Folding±down rear seat backs lock securely
(b) Road test:

Check the engine and chassis for abnormal noises.

Check that the vehicle does not wander or pull to
one side.

± MAINTENANCEBODY
MA±9
52 Author: Date:

Check that the brakes work properly and do not
drag.

Do setting of the parking brake shoes and drum.
(c) Be sure to deliver a clean car. Especially check:

Steering wheel

Shift lever knob

All switch knobs

Door handles

Seats

SA07C±01
W03084W03084
W03093
W03139
W03094
SST
SA±10
± SUSPENSION AND AXLEFRONT AXLE HUB
1961 Author: Date:
REMOVAL
1. REMOVE FRONT WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
2. CHECK BEARING BACKLASH AND AXLE HUB DEVI-
ATION
(a) Remove the 2 bolts, brake caliper and disc.
(b) Support the brake caliper securely.
(c) Using a dial indicator near the center of the axle hub and
check the backlash in the bearing shaft direction.
Maximum: 0.05 mm (0.0020 in.)
If the backlash exceeds the maximum, replace the bearing.
(d) Using a dial indicator, check the deviation at the surface
of the axle hub outside the hub bolt.
Maximum: 0.05 mm (0.0020 in.)
If the deviation exceeds the maximum, replace the bearing.
(e) Install the disc, 2 bolts and brake caliper.
Torque: 107 N´m (1,090 kgf´cm, 79 ft´lbf)
3. REMOVE DRIVE SHAFT LOCK NUT
(a) Remove the cotter pin and lock cap.
(b) With applying the brakes, remove the nut.
Torque: 294 N´m (3,000 kgf´cm, 217 ft´lbf)
(c) Remove the brake caliper and disc.
4. w/ ABS:
REMOVE ABS SPEED SENSOR AND WIRE HARNESS
CLAMP
Torque: 8.0 N´m (82 kgf´cm, 71 in.´lbf)
5. LOOSEN 2 NUTS ON LOWER SIDE OF SHOCK AB-
SORBER
Torque: 211 N´m (2,150 kgf´cm, 156 ft´lbf)
HINT:

Do not remove the bolts.

At the time of installation, coat the nut's thread with en-
gine oil.
6. DISCONNECT TIE ROD END FROM STEERING
KNUCKLE
(a) Remove the cotter pin and nut.
Torque: 49 N´m (500 kgf´cm, 36 ft´lbf)
(b) Using SST, disconnect the tie rod end from the steering
knuckle.
SST 09610±20012

SA08Q±01
FA1535
SST
W03093
W03142
± SUSPENSION AND AXLEFRONT DRIVE SHAFT (5S±FE)
SA±17
1968 Author: Date:
REMOVAL
NOTICE:
The hub bearing could be damaged if it is subjected to the
vehicle weight, such as when moving the vehicle with the
drive shaft removed.
Therefore, if it is absolutely necessary to place the vehicle
weight on the hub bearing, first support it with SST.
SST 09608±16042 (09608±02021, 09608±02041)
1. REMOVE FRONT WHEEL AND FRONT FENDER
APRON SEAL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
2. REMOVE DRIVE SHAFT LOCK NUT
(a) Remove the cotter pin and lock cap.
(b) With applying the brakes, remove the nut.
Torque: 294 N´m (3,000 kgf´cm, 217 ft´lbf)
3. DRAIN GEAR OIL (M/T) or ATF (A/T)
4. DISCONNECT TIE ROD END FROM STEERING
KNUCKLE (See page SA±10)
5. DISCONNECT LOWER BALL JOINT FROM LOWER
SUSPENSION ARM (See page SA±10)
6. DISCONNECT DRIVE SHAFT FROM AXLE HUB
(a) Using a plastic hammer, disconnect the drive shaft from
the axle hub.
NOTICE:
Cover the drive shaft boot with cloth to protect it from dam-
age.
(b) Push the front axle hub toward the outside of the vehicle,
and separate the drive shaft from the axle hub.