1999 TOYOTA CAMRY brake

DI±446
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
681 Author: Date:
(6) Shift into the D position. Press all the way down on the accelerator pedal with your right foot.
Quickly read the stall speed at this time.
Stall speed: 2,600 ± 150 rpm
(7) Do the same test in R position.
Stall speed: 2,600 ± 150 rpm
Evaluation:
ProblemPossible cause
(a) Stall speed low in D and R positions

Engine output may be insufficient

Stator one±way clutch is operating properly
HINT: If more than 600 rpm below the specified value, the torque
converter could be faulty.
(b) Stall speed high in D position

Line pressure too low

Forward clutch slipping

No.2 one±way clutch not operating properly

O/D clutch slipping
(c) Stall speed high in R position

Line pressure too low

Direct clutch slipping

1st and reverse brake slipping

O/D clutch slipping
(d) Stall speed high in D and R positions

Line pressure too low

Improper fluid level

O/D one±way clutch not operating properly
(b) Measure the time lag.
When the shift lever is shifted while the engine is idling, there will be a certain time lapse or lag before
the shock can be felt. This is used for checking the condition of the O/D direct clutch, forward clutch,
and 1st and reverse brake.
NOTICE:

Do the test at normal operating fluid temperature 50 ± 80 °C (122 ± 176 °F).

Be sure to allow 1 minute interval between tests.

Take 3 measurements and take the average value.
(1) Connect an OBD II scan tool or TOYOTA hand±held tester to DLC3.
(2) Fully apply the parking brake.
(3) Start the engine and check idle speed.
Idle speed: 700 ± 50 rpm (In N position and air conditioner OFF)
(4) Shift the shift lever from N to D position. Using a stop watch, measure the time from when the
lever is shifted until the shock is felt.
In the same manner, measure the time lag for N " R.
Time lag:
N " D Less than 1.2 seconds
N " R Less than 1.5 seconds
Evaluation (If N " D time or N " R time lag is longer than specified):
ProblemPossible cause
N " D time lag is longer

Line pressure too low

Forward clutch worn

O/D one±way clutch not operating
N " R time lag is longer

Line pressure too low

Direct clutch worn

1st and reverse brake worn

O/D one±way clutch not operating properly

± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±447
682 Author: Date:
7. HYDRAULIC TEST
Measure the line pressure
NOTICE:

Do the test at normal operation fluid temperature 50 ± 80 °C (122 ± 176 °F).

The line pressure test should always be carried out in pairs. One technician should observe
the conditions of wheels or wheel stoppers outside the vehicle while the other is doing the test.

Be careful to prevent SST's hose from interfering with the exhaust pipe.
(1) Warm up the ATF.
(2) Remove the test plug on the transaxle case front left side and connect SST.
(See page AX±21 for the location to connect SST)
SST 09992±00095 (09992±00231, 09992±00271)
(3) Fully apply the parking brake and chock the 4 wheels.
(4) Connect an OBD II scan tool or TOYOTA hand±held tester to DLC3.
(5) Start the engine and check idling speed.
(6) Keep your left foot pressed firmly on the brake pedal and shift into D position.
(7) Measure the line pressure when the engine is idling.
(8) Depress the accelerator pedal all the way down. Quickly read the highest line pressure when
engine speed reaches stall speed.
(9) In the same manner, do the test in R position.
Specified line pressure:
ConditionD position kPa (kgf/cm2, psi)R position kPa (kgf/cm2, psi)
Idling401 ± 461 (4.1 ± 4.7, 58 ± 66)804 ± 882 (8.2 ± 9.0, 117 ± 128)
Stall1,138 ± 1,236 (11.6 ± 12.6, 165 ± 179)1,716 ± 1,854 (17.5 ± 18.9, 249 ± 269)
If the measured pressure is not up to specified value, recheck the throttle cable adjustment and retest.
Evaluation
ProblemPossible cause
If the measured values at all position are higher

Throttle cable out of adjustment

Throttle valve defective

Regulator valve defective
If the measured values at all position are lower

Throttle cable out of adjustment

Throttle valve defective

Regulator valve defective

Oil pump defective

O/D direct clutch defective
If pressure is low in the D position only
D position circuit fluid leakage

Forward clutch defective
If pressure is low in the R position only

R position circuit fluid leakage

Direct clutch defective

1st and reverse brake defective

DI02F±02
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±449
684 Author: Date:
DIAGNOSTIC TROUBLE CODE CHART
If a DTC is displayed during the DTC check, check the circuit listed for that code in the table below and pro-
ceed to the page given.
* : ±...MIL does not light /
...MIL light up
DTC No.
(See Page)Detection ItemTrouble AreaMIL *Memory
P0500
(DI±456)Vehicle Speed Sensor Malfunc-
tion
(No.1 Vehicle Speed Sensor)
Open or short in No.1 vehicle speed sensor circuit
No.1 vehicle speed sensor
Combination meter
ECM
Automatic transaxle (clutch, brake or gear etc.)


P0750
(DI±460)Shift Solenoid A Malfunction
(Shift Solenoid Valve No.1)Shift solenoid valve No.1 is stuck open or closed
Valve body is blocked up or stuck
Automatic transaxle (clutch, brake or gear etc.)


P0753
(DI±462)Shift Solenoid A Electrical Mal-
function
(Shift Solenoid Valve No.1)Open or short in shift solenoid valve No.1 circuit
Shift solenoid valve No.1
ECM


P0755
(DI±460)Shift Solenoid B Malfunction
(Shift Solenoid Valve No.2)Shift solenoid valve No.2 is stuck open or closed
Valve body is blocked up or stuck
Automatic transaxle (clutch, brake or gear etc.)


P0758
(DI±462)Shift Solenoid B Electrical Mal-
function
(Shift Solenoid Valve No.2)Open or short in shift solenoid valve No.2 circuit
Shift solenoid valve No.2
ECM


P0770
(DI±466)Shift Solenoid E Malfunction
(Shift Solenoid Valve SL)
Shift solenoid valve SL is stuck open or closed
Valve body is blocked up or stuck
Lock±up clutch
Automatic transaxle (clutch, brake or gear etc.)


P0773
(DI±468)Shift Solenoid E Electrical Mal-
function
(Shift Solenoid Valve SL)Open or short in shift solenoid valve SL circuit
Shift solenoid valve SL
ECM


P1520
(DI±472)Stop Light Switch Signal Mal-
functionOpen or short in stop light switch circuit
Stop light switch
ECM


P1705
(DI±473)NC2 Revolution Sensor Circuit
Malfunction
(Direct Clutch Speed Sensor)Open or short in direct clutch speed sensor circuit
Direct clutch speed sensor
ECM


P1765
(DI±476)
Linear Solenoid for Accumulator
Pressure Control Circuit Mal-
function
(Shift Solenoid Valve SLN)Open or short in shift solenoid valve SLN circuit
Shift solenoid valve SLN
ECM


P1780
(DI±479)Park/Neutral Position Switch
MalfunctionShort in park/neutral position switch circuit
Park/neutral position switch
ECM



± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±455
690 Author: Date:
3. Chapter 3: Off±Vehicle Repair
(
: A541E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM530U)
SymptomSuspect AreaSee page
Vehicle does not move in any forward position and reverse posi-
tion
1. Front and rear planetary gear
2. O/D planetary gear
3. O/D one±way clutch (F
0)
4. O/D direct clutch (C
0)
5. Forward clutch (C
1)
6. O/D brake (B
0)












Vehicle does not move in R position
1. Front and rear planetary gear unit
2. Direct clutch (C
2)
3. O/D direct clutch (C
0)
4. 1st and reverse brake (B
3)








No up±shift (1st " 2nd)1. No. 1 one±way clutch (F1)
2. 2nd brake (B
2)




No up±shift (2nd " 3rd)Direct clutch (C2)

No up±shift (3rd " O/D)O/D brake (B0)

No lock±up or No lock±up offTorque converter clutch

Harsh engagement (N " D)
1. Forward clutch (C1)
2. O/D one±way clutch (F
0)
3. No. 2 one±way clutch (F
2)






Harsh engagement (N " R)1. Direct clutch (C2)
2. 1st and reverse brake (B
3)




Harsh engagement (Lock±up)Torque converter clutch

Slip or shudder (Forward position: After warm±up)
1. Torque converter clutch
2. O/D direct clutch (C
0)
3. Forward clutch (C
1)
4. O/D one±way clutch (F
0)








Slip or shudder (R position)
1. Direct clutch (C2)
2. 1st and reverse brake (B
3)
3. O/D direct clutch (C
0)






Slip or shudder (1st)No. 2 one±way clutch (F2)

Slip or shudder (2nd)1. No. 1 one±way clutch (F1)
2. 2nd brake (B
2)




Slip or shudder (3rd)Direct clutch (C2)

Slip or shudder (O/D)O/D brake (B0)

No engine braking (1st ~ 3rd: D position)2nd brake (B2)

No engine braking (1st: L position)1st and reverse brake (B3)

No engine braking (2nd: 2 position)2nd coast brake (B1)

Poor acceleration (All position)1. Torque converter clutch
2. O/D planetary gear



Poor acceleration (O/D)1. O/D direct clutch (C0)
2. O/D planetary gear



Large shift shock or engine stalls when starting off or stoppingTorque converter clutch

DI1KB±01
A00223
Vehicle Speed
Sensor4±Pulse
Combination
Meter
ECM
Transaxle
Vehicle Speed Sensor
4±Pulse
Q00515 Q00514
DI±456
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
691 Author: Date:
CIRCUIT INSPECTION
DTC P0500 Vehicle Speed Sensor Malfunction
CIRCUIT DESCRIPTION
The vehicle speed sensor outputs a 4±pulse signal for every revolution of the rotor shaft, which is rotated
by the transmission output shaft via the driven gear. After this signal is converted into a more precise rectan-
gular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the
ECM. The ECM determines the vehicle speed based on the frequency of these pulse signals.
DTC No.DTC Detecting ConditionTrouble Area
P0500
No vehicle speed sensor signal to ECM under conditions (a)
and (b)
(2 trip detection logic)
(a) Park/neutral position switch is OFF
(b) Vehicle is being driven
Open or short in vehicle speed sensor circuit

Vehicle speed sensor

Combination meter

ECM
At ti t l (lthb k t )Clutch or brake slips or gear is broken
Automatic transaxle (clutch, brake or gear etc.)
WIRING DIAGRAM
See page DI±333.

± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±459
694 Author: Date:
5 Check ECM (See page IN±31).
NG Replace ECM.
OK
Check and repair the transaxle (clutch, brake
or gear etc.).

Q07781
DI±460
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
695 Author: Date:
DTC P0750, P0755 Shift Solenoid A/B Malfunction
(Shift Solenoid Valve No.1/No.2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor and direct clutch speed sensor to detect the actual
gear position (1st, 2nd, 3rd or O/D gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
trouble of the shift solenoid valves, valve body or automatic transaxle (clutch, brake or gear etc.)
DTC No.DTC Detecting ConditionTrouble Area
P0750
P0755During normal driving, the gear required by the ECM does not
match the actual gear
(2 trip detection logic)
Shift solenoid valve No.1/No.2 is stuck open or closed

Valve body is blocked up or stuck

Automatic transaxle (clutch, brake or gear etc.)
Check the shift solenoid valve No.1 when DTC P0750 is output and check the shift solenoid valve No.2 when
DTC P0755 is output.
INSPECTION PROCEDURE
1 Check shift solenoid valve No.1 or No.2 operation.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve No.1 or No.2.
CHECK:
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
check that the solenoid valve does not leak air.
(b) When battery positive voltage is supplied to the shift sole-
noid valve, check that the valve opens.
NG Replace the shift solenoid valve No.1 or No.2.
OK
DI02K±02

Q04874
Controlled
Pressure Line
Pressure
Drain Controlled
Pressure
Q08040
DI±466
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
701 Author: Date:
DTC P0770 Shift Solenoid E Malfunction
(Shift Solenoid Valve SL)
SYSTEM DESCRIPTION
The ECM uses the signals from the throttle position sensor, air±
flow meter and crankshaft position sensor to monitor the en-
gagement condition of the lock±up clutch.
Then the ECM compares the engagement condition of the
lock±up clutch with the lock±up schedule in the ECM memory
to detect mechanical trouble of the shift solenoid valve SL,
valve body, torque converter clutch or automatic transaxle
(clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P0770

Lock±up does not occur when driving in the lock±up range
(normal driving at 80 km/h [50 mph]), or lock±up remains ON
in the lock±up OFF range.
(2 trip detection logic)

When lock±up is ON, clutch or brake slips or gear is broken.
Shift solenoid valve SL is stuck open or closed

Valve body blocked up or stuck

Lock±up clutch

Automatic transaxle (clutch, brake or gear etc.)
INSPECTION PROCEDURE
1 Check solenoid valve SL operation.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve SL.
CHECK:
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
check that the solenoid valve does not leak air.
(b) When battery positive voltage is supplied to the shift sole-
noid valve, check that the solenoid valve opens.
NG Replace the solenoid valve SL.
OK
DI02M±02