1999 TOYOTA CAMRY Shifting

D01809
Cruise Control ECU
: w/ Engine Immobiliser System
: w/o Engine Immobiliser SystemOD14
C15Y ± B
*1
20
E7OD1B+ ECM
*2
18
E7
*1
*2
DI±428
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
663 Author: Date:
O/D Cancel Signal Circuit
CIRCUIT DESCRIPTION
While driving uphill with cruise control activated, in order to minimize gear shifting and provide smooth cruis-
ing overdrive may be prohibited temporarily under some conditions.
The cruise control ECU sends O/D cut signals to the ECM as necessary and the ECM cancels overdrive
shifting until these signals are discontinued.
WIRING DIAGRAM
DI038±02

D01810
: w/ Engine Immobiliser System
: w/o Engine Immobiliser System
: O/D Main Switch
Contacts go open with switch pushed in
Contacts go closed with switch pushed once againInstrument
Panel J/BIgnition Switch
1B1
AM1
W
I16
7 1
22
1K2
AM1 IG1
B ± Y
O/D OFF
Indicator Light
(Combination Meter) R ± L
R ± LGAUGE
J4
Junction
Connector
DI164
2
1D 1K
D12
C8G ± OC
C8
W ± B C
CG ± O
G ± OJ6
Junction
ConnectorECM
5
*1B+
E77*2
E7OD2G ± O
IG311
O2 2
(*3)
O/D Main
Switch
O2
4
W ± B A
IF AJ5
Junction
Connector B ± R
1
FUSIBLE
LINK
BLOCKALT F9B ± R
2
F9
1
F4B ± GFL
MAIN
Battery
*3 *2 *1
1 Instrument
Panel J/B
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
DI±431
666 Author: Date:
O/D Main Switch & O/D OFF Indictor Light Circuit
CIRCUIT DESCRIPTION
The O/D main switch contacts go open when the switch is pushed in and go closed when it is pushed out.
In O/D main switch in OFF position, the O/D OFF indicator light lights up, and the ECM prohibits shifting over-
drive.
WIRING DIAGRAM
DI1J1±01

DI02C±02
Vehicle Brought to Workshop
Customer Problem Analysis
Check DTC and Freezes Frame Data (Pre±check)
Record or Print DTC and Freezed Frame Data P.
DI±438
Clear DTC and Freezed Frame Data P. DI±449
Visual Inspection
Setting the Check Mode Diagnosis P.
DI±438
1
Items insideare titles of pages in this manual, with the
page number indicated in the bottom portion. See the indicated
pages for detailed explanations.

Connect an OBD II scan tool or TOYOTA hand±held tester to DLC3.
If the display shows ºUNABLE TO CONNECT TO VEHICLEº when you have connected the
scan tool / TOYOTA hand±held tester, inspect DLC3 P.
DI±438
2
3
4
5
6
symptom does not occur
Problem Symptom Confirmation8
7Symptom Simulation
P.
IN±21symptom occur
DTC CheckP. DI±438OK Code11Preliminary Check
P.
DI±438
DTC Chart
P. DI±449Mechanical System Test
P.
DI±438
Manual Shifting Test
P.
DI±438 OK
OK
Chapter 1
(Electronic)Chapter 2
(On±Vehicle)
P.
DI±453 OK
Chapter 3
(Off±Vehicle)OK Matrix Chart of Problem Symptoms ± P. DI±453
Circuit
Inspection
Main Throttle Signal Check

Stop Light Signal Check
NG
Parts Inspection
NG
NGNG
Identification of ProblemRepairConfirmation TestEnd
NG
NG
12NG
13
14 15
16 17 9
10
P. DI±453P. DI±453
P. DI±484 to DI±487 P. DI±437 DI±436
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
671 Author: Date:
AUTOMATIC TRANSAXLE (A541E)
HOW TO PROCEED WITH TROUBLESHOOTING

Q00519
AT3417
OK if hot
Add if hot
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±443
678 Author: Date:
(c) L POSITION TEST
Shift into the 2 position and fully depress the accelerator pedal and check the following points:
(1) Check no up±shift.
While running in the L position, check that there is no up±shift to 2nd gear.
(2) Check engine braking.
While running in the L position, release the accelerator pedal and check the engine braking ef-
fect.
(3) Check for abnormal noises during acceleration and deceleration.
(d) R POSITION TEST
Shift into the R position and fully depress the accelerator pedal and check for slipping.
CAUTION:
Before conducting this test ensure that the test area is free from people and obstruction.
(e) P POSITION TEST
Stop the vehicle on a grade (more than 5°) and after shifting into the P position, release the parking
brake. Then, check to see that the parking lock pawl holds the vehicle in place.
5. BASIC INSPECTION
(a) Check the fluid level.
HINT:

Drive the vehicle so that the engine and transaxle are at
normal operating temperature.
Fluid temp.: 70 ± 80 °C (158 ± 176 °F)

Only use the COOL range on the dipstick as a rough refer-
ence when the fluid is replaced or the engine does not
run.
(1) Park the vehicle on a level surface and set the park-
ing brake.
(2) With the engine idling and the brake pedal de-
pressed, shift the shift lever into all positions from P
to L position and return to P position.
(3) Pull out the dipstick and wipe it clean.
(4) Push it back fully into the pipe.
(5) Pull it out and check that the fluid level is in the HOT
range.
If the level is at the low side, add new fluid.
Fluid type: ATF D±II or DEXRON®III (DEXRON®II)
NOTICE:
Do not overfill.
(b) Check the fluid condition.
If the level is at the low side, add new fluid.

Q00199
Q04604
Q04700
Bolt Neutral Basic Line
Groove
Bolt
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±445
680 Author: Date:
(f) Inspect and adjust the shift lever position.
When shifting the shift lever from the N position to other
positions, check that the lever can be shifted smoothly
and accurately to each position and that the position indi-
cator is not aligned with the correct position.
If the indicator is not aligned with the correct position, carry out
the following adjustment procedures.
(1) Loosen the nut on the shift lever.
(2) Push the control shaft fully rearward.
(3) Return the control shaft lever 2 notches to N posi-
tion.
(4) Set the shift lever to N position.
(5) While holding the shift lever lightly toward the R
position side, tighten the shift lever nut.
Torque: 13 N´m (130 kgf´cm, 9 ft´lbf)
(6) Start the engine and make sure that the vehicle
moves forward when shifting the lever from the N to
D position and reverses when shifting it to the R
position.
(g) Inspect and adjust the park/neutral position.
Check that the engine can be started with the shift lever
only in the N or P position, but not in other positions.
If it is not as stated above, carry out the following adjustment
procedures.
(1) Loosen the park/neutral position switch bolt and set
the shift lever to the N position.
(2) Align the groove and neutral basic line.
(3) Hold in position and tighten the bolt.
Torque: 5.4 N´m (55 kgf´cm, 48 in´lbf)
For continuity inspection of the park/neutral position
switch, see page DI±479.
(h) Check the idle speed.
Idle speed: 700 ± 50 rpm
(In N position and air conditioner OFF)
6. MECHANICAL SYSTEM TESTS
(a) Measure the stall speed.
The object of this test is to check the overall performance of the transaxle and engine by measuring
the stall speeds in the D and R positions.
NOTICE:

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

Do not continuously run this test longer than 5 seconds.

To ensure safety, conduct this test in a wide, clear level area which provides good traction.

The stall test should always be carried out in pairs. One technician should observe the condi-
tions of wheels or wheel stoppers outside the vehicle while the other is doing the test.
(1) Chock the 4 wheels.
(2) Connect an OBD II scan tool or TOYOTA hand±held tester to DLC3.
(3) Fully apply the parking brake.
(4) Keep your left foot pressed firmly on the brake pedal.
(5) Start the engine.

Q00224
DI±448
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
683 Author: Date:
8. MANUAL SHIFTING TEST
HINT:
With this test, it can be determined whether the trouble is within
the electrical circuit or is a mechanical problem in the transaxle.
(a) Disconnect the solenoid wire.
(b) Inspect the manual driving operation.
Check that the shift and gear positions correspond with
the table below.
While driving, shift through the L, 2 and D positions.
Check that the gear change corresponds to the shift posi-
tion.
Shift PositionGear Position
DO/D
2O/D
L1st
RReverse
PPawl Lock
HINT:
If the L, 2 and D position gear positions are difficult to positions
are difficult to distinguish, do the following read test.
If any abnormality is found in the above test, the problem is in
the transaxle itself.
(c) Connect the solenoid wire.
(d) Cancel out the DTC (See page DI±438).

Position
NORMALSHIFT SOLENOID NO.1
MALFUNCTIONING
Solenoid valveNo.1 No.2GearSHIFT SOLENOID NO.2
MALFUNCTIONINGBOTH SOLENOIDS MAL-
FUNCTIONINGSolenoid valve
No.1 No.2GearSolenoid valve
No.1 No.2GearGear when shift selector is
manually operated
D
2
LON
ONOFF
ON
ON OFF
OFF OFF
ON
ONOFF
ON
ON OFF
ON
ON ONOFF1st
2nd
3rd
O/D
1st
2nd
3rd
1st
2ndX
X
X
X
X
X
X
X
XON
ON
OFF
OFFON
ON
ON3rd 3rd
O/D
3rd
3rd
1st
2ndX
X
X
X
X
X
X
X
X OFF
OFFON
ON OFF OFF
OFF
ON
ON1st
O/D
O/D1st O/D O/D
O/D
1st
1stO/D O/D O/D
O/D
O/D O/D
O/D
1st
1st
X: MalfunctionsON
ON3rd
3rd
DI±462
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
697 Author: Date:
DTC P0753, P0758 Shift Solenoid A/B Electrical Malfunc-
tion (Shift Solenoid Valve No.1/No.2)
CIRCUIT DESCRIPTION
Shifting from 1st to O/D is performed in combination with ON and OFF of the shift solenoid valves No.1 and
No.2 controlled by ECM. If an open or short circuit occurs in either of the shift solenoid valves, the ECM con-
trols the remaining normal shift solenoid valve to allow the vehicle to be operated smoothly (Fail safe func-
tion).
Fail Safe Function:
If either of the shift solenoid valve circuits develops an open or short, the ECM turns the other shift solenoid
ON and OFF to shift to the gear positions shown in the table below. The ECM also turns the shift solenoid
valve SL OFF at the same time. If both solenoids are malfunction, hydraulic control cannot be performed
electronically and must be done manually.
Manual shifting as shown in the following table must be done (In the case of a short circuit, the ECM stops
sending current to the short circuited solenoid).
Check the shift solenoid valve No.1 when DTC P0753 is output and check the shift solenoid valve No.2 when
DTC P0758 is output.
DTC No.DTC Detecting ConditionTrouble Area
P0753
P0758
The ECM checks for an open or short circuit in the shift sole-
noid valves No.1 and No.2 circuit when it changes.
The ECM records DTC P0753 or P0758 if condition (a) or (b) is
detected once, but it does not light up MIL.
After ECM detects condition (a) or (b) continuously 8 times or
more in a trip and the MIL light up.
(a) When the solenoid is energized, the solenoid resistance
is 8 W or less and is counted.
(b) When the solenoid is not energized, the solenoid resistance
is 100 kW or more and is counted.

Open or short in shift solenoid valve No.1/No.2 circuit

Shift solenoid valve No.1/No.2

ECM
DI02L±02

Q04869
NC2 Revolution Sensor
D01094
Direct Clutch
Speed Sensor 2V3
1
V3
G R
E99
E94ECM
NC2
+
NC2±4 ~ 6 V
*1: Except California, w/ Engine Immobilizer and / or TRAC
*2: California, w/ Engine Immobilizer and / or TRAC*2 *1
E1114
26 *2 *1
E11
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±473
708 Author: Date:
DTC P1705 NC2 Revolution Sensor Circuit Malfunction
(Direct Clutch Speed Sensor)
CIRCUIT DESCRIPTION
This sensor detects the rotation speed of the direct clutch drum.
By comparing the direct clutch speed signal and the vehicle
speed sensor signal, the ECM detects the shift timing of the
gears and appropriately controls the engine torque and hydrau-
lic pressure in response to various conditions, thus performing
smooth gear shifting.
DTC No.DTC Detecting ConditionTrouble Area
P1705
The ECM detects conditions (a), (b), (c), (d), (e) and (f) conti-
nuity for 4 sec or more.
(2 trip detection logic)
(a) Vehicle speed : 32 km/h (20 mph) or more
(b) 3rd or 4th gear
(c) NC2 < 300 rpm
(d) Park/neutral position switch: OFF
(e) Solenoid valves and vehicle speed sensor are normal
(f) L position: OFF

Open or short in direct clutch speed sensor circuit

Direct clutch speed sensor

ECM
WIRING DIAGRAM
DI02P±02