TOYOTA CAMRY 1999 Service Repair Manual

ELECTRONICALLY CONTROLLED TRANSMISSION AND A/T INDICATOR
A 6A11 A7A10 A8A9
B 16
IE IG2 5IG26IG29IH11IG33IG24
IF1 16 IF113 IF114 IF115 LL 2L DL NL RL PL
43109872
1V 5
1H 10 EE
DDA
AA E
DA
A L±WR±L
W±B
Y
O
B±R
R
R±B
G±WY
L±W
B±RY
L±W
B±R
R
R±B
G±W W± B W±B
COMBINATION METERB C10 C11ACC12
JUNCTION
CONNECTOR J 4A/T INDICATOR LIGHT SW
[PARK/NEUTRAL POSITION SW] P 1
JUNCTION
CONNECTOR J22JUNCTION
CONNECTOR J22 L
2
D
N
R
PY
L±W
B±R
R
R±B
G±W
G± OR±B R±B L±WY R±L
G±W
4 2
O/ D MAI N
SW O 2, , R±B RB

The electronically controlled transmission, however, electrically controls the line pressure and lock±up pressure etc., through
the solenoid valve. Engine control module controls of the solenoid valve based on the input signals from each sensor which
makes smooth driving possible by shift selection for each gear which is most appropriate to the driving conditions at that
time.
1. GEAR SHIFT OPERATION
During driving, the engine control module selects the shift for each gear which is most appropriate to the driving conditions,
based on input signals from the engine coolant temp. sensor to TERMINAL THW of the engine control module, and also the
input signals to TERMINAL SPD of the engine control module from the vehicle speed sensor devoted to the electronically
controlled transmission. Current is then output to the electronically controlled transmission solenoid. When shifting to 1st
gear, current flows from TERMINAL S1 of the engine control module to TERMINAL (B) 3 of the solenoid to GROUND, and
continuity to the No.1 solenoid causes the shift.
For 2nd gear, current flows from TERMINAL S1 of the engine control module to TERMINAL (B) 3 of the solenoid to
GROUND, and from TERMINAL S2 of the engine control module to TERMINAL (B) 1 of the solenoid to GROUND, and
continuity to solenoids No.1 and No.2 causes the shift.
For 3rd gear, there is no continuity to No.1 solenoid, only to No.2, causing the shift.
Shifting into 4th gear (Overdrive) takes place when there is no continuity to either No.1 or No.2 solenoid.
2. LOCK±UP OPERATION
When the engine control module judges from each signal that lock±up operation conditions have been met, current flows
from TERMINAL SL of the engine control module to TERMINAL (A) 1 of the electronically controlled transmission solenoid to
GROUND, causing continuity to the lock±up solenoid and causing lock±up operation.
3. STOP LIGHT SW CIRCUIT
If the brake pedal is depressed (Stop light SW on) when driving in lock±up condition, a signal is input to TERMINAL STP of
the engine control module, the engine control module operates and continuity to the lock±up solenoid is cut.
4. OVERDRIVE CIRCUIT
*O/D main SW on
When the O/D main SW is turned on (O/D off indicator light turns off), a signal is input into TERMINAL OD2 of the engine
control module and engine control module operation causes gear shift when the conditions for overdrive are met.
*O/D main SW off
When the O/D main SW is turned to off, the current through the O/D off indicator light flows through the O/D main SW to
GROUND, causing the indicator light to light up. At the same time, a signal is input into TERMINAL OD2 of the engine
control module and engine control module operation prevents shift into overdrive.
E4 (A), E5 (B), E6 (C) ENGINE CONTROL MODULE
S1, S2±E1 :9.0±14.0 volts with the solenoid on
0±1.5 volts with the solenoid off
L±E1 :7.5±14.0 volts with the shift lever at L position
2±E1 :7.5±14.0 volts with the shift lever at 2 position
R±E1 :7.5±14.0 volts with the shift lever at R position
STP±E1 :9.0±14.0 volts with the brake pedal depressed
THW±E2 :0.2±1.0 volts with the ignition SW on and coolant temp. 80°C (176°F)
VTA±E2 :0.3±0.8 volts with the throttle valve fully closed
3.2±4.9 volts with the throttle valve fully opened
VC±E2 :4.5±5.5 volts
OD2±E1 :9.0±14.0 volts with the O/D main SW turned on
0±3.0 volts with the O/D main SW turned off
+B±E1 :9.0±14.0 volts
O2 O/D MAIN SW
2±4 : Closed with the O/D main SW off, open with the O/D main SW on
SYSTEM OUTLINE
SERVICE HINTS

ELECTRONICALLY CONTROLLED TRANSMISSION AND A/T INDICATOR
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
C10A30F9A28J2231
C11B30F11C28J23A31
C12C30I1030J24B31
C1630J331O231
E1A28J431P129
E2B28J531S431
E328J1531T129
E4A30J1831V129
E5B30J1931
E6C30J2031
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1B22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1C22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1D22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J
1K
1R22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1V
()
1W
2A
2C24Engine Room Main Wire and Engine Room J/B No.2 (Engine Compartment Left)
2F
gg(g)
2J
2K24Cowl Wire and Engine Room J/B No.2 (Engine Compartment Left)
2L
g(g )
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IF136Instrument Panel Wire and Cowl Wire (Under the Blower Motor)
IG1
IG238Engine Wire and Cowl Wire (Under the Blower Motor)
IG3
g()
IH138Engine Wire and Instrument Panel Wire (Under the Blower Motor)
: GROUND POINTS
CodeSee PageGround Points Location
EB34Left Radiator Side Support
EC34Intake Manifold
IE36Left Kick Panel
IG36Instrument Panel Brace RH
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
I438Engine Wire

MEMO

CRUISE CONTROL
SPEEDOMETER
B 15 C6B14 C10 C 5
IH1 7IH12IF13IE25
IG4 5
CRUISE CONTROL
SW [COMB. SW]
CRUISE
CANCELSET/
COAST RESUME/
ACCEL
C14 CMS CCS
3 EP D 10A
GAUGE FROM POWER SOURCE SYSTEM (
SEE PAGE 44)
1D 2
C 71J 1
B B D
1 DD
10 2 D
D
32DDBB3
10 11 12 5 4
10 4 11D
D
W±B
R±L
R±L
R±L R±L
R±L
B±R
W W± L V±W LG±RO O
LG±R
LG±R
V±WO V±WBRPL L
P
V±W
O
R±LR±L JUNCTION
CONNECTOR J19
D POSITION SW
[PARK/NEUTRAL POSITION SW] P 1 JUNCTION
CONNECTOR J 3
VEHICLE SPEED SENSOR
(
COMBINATION METER) V 1
DATA LINK
CONNECTOR 2 D 2
DATA LINK
CONNECTOR 1 D 1
JUNCTION CONNECTOR J 1
JUNCTION CONNECTOR J 2
JUNCTION CONNECTOR J15
R±L
CRUISE CONTROL ECU C16 COMBINATION METER
BR
CRUISE
A/D TC TCB
SI SE
IG+IG2 2
IG3 11 C C11 B , C12IG2 9
B±R LG±R
FF
A A
JUNCTION
CONNECTOR J22
B±R
PI TC SPD CMS CCS JUNCTION
CONNECTOR J2 4

15A
ECU±IG
1J 9
C 6 A 20 A 315A
STOP FROM POWER SOURCE SYSTEM (
SEE PAGE 44)
1C 7
A AAAAA B A
IF1R 5
1R 4 16 15 8 2
41
4 B
C
12332
ABB
C
W± BGND IDLO OD1 S2
7 13 14 6 9
L±B L±B Y±BL±R
L±B
B±RL±B
B±R
W W± B
R±G
R±B
G±B R±Y W±B
G± W
W
W±B JUNCTION
CONNECTOR J19
JUNCTION
CONNECTOR J12
STOP LIGHT SW S 4
ENGINE CONTROL MODULE
JUNCTION
CONNECTOR
CRUISE CONTROL ACTUATOR C 3
G± W G± W
CRUISE CONTROL ECU
C16
1J 8
1J 7
W±B W±B
M
JUNCTION CONNECTOR J 9
IG2 7S2
B J 6 A , J 7 E 4 CA, E 6
1
IDL OD ECT B
MO MC L STP±
A A
JUNCTION
CONNECTOR J23 ELECTRONICALLY
CONTROLLED
TRANSMISSION
SOLENOID E 2

CRUISE CONTROL
The cruise control system is a constant vehicle speed controller which controls the opening angle of the engine throttle valve
by the SW, and allows driving at a constant speed without depressing the accelerator pedal.
SET CONTROL
When the SET/COAST SW is operated while traveling with the CRUISE SW on, the speed when the SET/COAST SW is
operated to off is memorized, and the vehicle speed is controlled at that speed.
COAST CONTROL
When the SET/COAST SW is operated to on, the motor in the actuator rotates the throttle valve until it is closed fully to
decrease the vehicle speed, and the speed when the SET/COAST SW is operated to off is memorized, and the vehicle
speed is controlled at that speed.
Furthermore, every time the SET/COAST SW is operated momentarily (Approx. 0.5 sec.) to on, the memorized vehicle
speed is decreased by approx. 1.5 km/h (0.9 mph).
ACCEL CONTROL
When the RESUME/ACCEL SW is operated to on, the motor in the actuator rotates the throttle valve to open direction to
increase the vehicle speed, and the speed when the RESUME/ACCEL SW is operated to off is memorized, and the vehicle
speed is controlled at that speed.
Furthermore, every time the RESUME/ACCEL SW is operated momentarily (Approx. 0.5 sec.) to on, the memorized vehicle
speed is increased by approx. 1.5 km/h (0.9 mph).
MANUAL CANCEL MECHANISM
While traveling with the cruise control, if the following signal is input, the magnetic clutch of the actuator is cut, the motor is
controlled to close the throttle valve, and the cruise control is canceled.
(1) Stop lamp SW is on (Brake pedal is depressed)
(2) The CANCEL SW of the control SW is on
(3) CRUISE SW is off
RESUME CONTROL
After canceling the cruise control by the Manual Cancel operation, (Except when the CRUISE SW is off) if the vehicle speed
is above the minimum speed limit (Approx. 40km/h, 25mph), operating the RESUME/ACCEL SW to on from off will cause the
system to accelerate and resume to the vehicle speed before manual cancellation.
OVERDRIVE FUNCTION
The overdrive may be cut on an uphill grade, while traveling with the cruise control.
After the overdrive is cut, if the vehicle speed reaches the overdrive resume speed (Set speed minus 2 km/h (1.2 mph) ), and
if the system determines that the uphill grade has finished, the overdrive will resume after the overdrive timer operation.
AUTO CANCEL OPERATION
If any of the following conditions are detected, the set speed is erased and the control is canceled.
(1) Overcurrent to the magnetic clutch traction transistor
(2) The motor does not operate
(3) Short in the magnetic clutch
(4) Disconnection in the magnetic clutch (Includes blown stop lamp fuse)
(5) No vehicle speed signal input
(6) Ground short of the control SW input
(7) The actual vehicle speed becomes slower than the minimum speed limit
SYSTEM OUTLINE

C3 CRUISE CONTROL ACTUATOR
3±4 : Approx. 38.5 W
C14 CRUISE CONTROL SW [COMB. SW]
5±3 : Continuity with the CRUISE SW on
4±3 : Approx. 418 W with the CANCEL SW on
Approx. 68 W with the RESUME/ACCEL SW on
Approx. 198 W with the SET/COAST SW on
C16 CRUISE CONTROL ECU
9±GROUND : Approx. 12 volts with the ignition SW at ON or ST position
10±GROUND : Approx. 418 W with the CANCEL SW on in the cruise control SW
Approx. 198 W with the SET/COAST SW on in the cruise control SW
Approx. 68 W with the RESUME/ACCEL SW on in the cruise control SW
16±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
C328E6C30J1931
C11B30J131J2231
C12C30J231J2331
C1430J331J2431
C1630J6A31P129
D128J7B31S431
D230J931V129
E228J1231
E4A30J1531
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1C22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1D22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1R22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IE236Instrument Panel Wire and Cowl Wire (Lower Finish Panel)
IF136Instrument Panel Wire and Cowl Wire (Under the Blower Motor)
IG238Engine Wire and Cowl Wire (Under the Blower Motor)IG338Engine Wire and Cowl Wire (Under the Blower Motor)
IH138Engine Wire and Instrument Panel Wire (Under the Blower Motor)
: GROUND POINTS
CodeSee PageGround Points Location
IF36Instrument Panel Brace LH
IG36Instrument Panel Brace RH
SERVICE HINTS

ABS
W±R
11 IJ2 12 IJ2 ABS ECU
A 3A 10 B 2
B 1
SFRH B 1
B 5
SFRR A 5
B 3
SFLH A 6
B 7
SFLR A 11
B 4
SRRH A 12
B 8
SRRR B 15
B 2
SRLH B 14
B 6
SRLR
MA 4 A 1IG3 5 IG3 8 IG3 11IG3 4 60A
FL ABS
2 1 FROM POWER SOURCE SYSTEM
(
SEE PAGE 44)
24 13
36 214
3 3 3 3 3333
B 21 B 8 B 24 B 26IJ28
A 7 A 1
A 2 E 1B23DATA LINK
CONNECTOR 1 D 1
DATA LINK
CONNECTOR 2 D 2
14 4 111622
B
JUNCTION
CONNECTOR J 2 ABS MOTOR
RELAY
ABS SOL RELAY
ABS ACTUATORMT BS EBM
R±W W±L W±R W±B W±B
R+ SR MR5
B GR± RR±L R±L
R±L
G± B R±Y LG±R LG±RR±L GR± R W±B
W±L GR±LW± R
R±Y LG±R
LG±R(
SHORT PIN)
ABS TC TS WATCWB
G±B
EC IG3 6A C
B B
E1
BR BR BR
JUNCTION
CONNECTOR
A A3
R±B W±RL±B W± L W± RR±G G± Y LG±B
B J 6 A , J 7
B A13 A , A14
B A 4 A , A 5IJ1 1
IJ2 5IJ213
LG±B
G±Y
GR±R
R±B
EA JUNCTION
CONNECTOR J20
D/G TC TS
MT SFRH SFRR SFLH SFLR SRRH SRRR SRLH SRLR
BR
GR±L
GR W± B
BRBR

A1 2 1 2 1D 21C7 1J 9
IK1 1 IK1 2 IB1 9 IB1 3
2 1 2 1 B 22 B9J24
10 B23 B 13 B5 B 11FROM POWER SOURCE SYSTEM (
SEE PAGE 44)
R±L
B±R B±R
G±W G±WR±L
R
G G R
W
BW
B
ABS SPEED SENSOR
FRONT LHABS SPEED SENSOR
FRONT RH D D10A
GAUGE
ABS WARNING
LIGHT
[COMB. METER]
ABS SPEED SENSOR
REAR LHABS SPEED SENSOR
REAR RH 15A
ECU±IG15A
STOP
ABS ECUA 6 A 7R±L
J 3
JUNCTION
CONNECTOR
C12
B
B J23
A19 A201R 51R 4
STOP LIGHT SW
W G± W1 2S 4
IFB 12 B 25
A
JUNCTION
CONNECTOR J 9
W±B W±B
IF1 12
C7
C4
G±B G± B
B CA A
C CCIJ2 1IJ26
A 9 A 3 A 2 A 8
R
G
W
BGRJUNCTION
CONNECTOR JUNCTION
CONNECTOR J22
JUNCTION
CONNECTOR J12
G± B
GND GND,
B A13 A , A14
WA IG1 STP FL+ FL± FR+ FR±
RL+ RL± RR+ RR±