1999 TOYOTA CAMRY relay

A09403
ECM
+B 12
E4 B±Y J/C
B
J24 J23B
B±Y
Instrument
Panel J/B 22J 2K7
W±R EFI
Relay 1 3
52
2F4
W±B
2A 1
AM2
42L
B
FL
Block
MAIN
FL
B±GEngine
J/B No.2
5
1B
531K71W
IGN
1K
Room
W±R
IG
Switch
7 6
E6
BR
B±R
EC
E1
F11
F9EB
1
1
EFI
J20
J/C A
A
Battery
BR
16 B±R DI±116
± DIAGNOSTICSENGINE
ECM Power Source Circuit
CIRCUIT DESCRIPTION
When the ignition switch is turned ON, battery positive voltage is applied to the coil, closing the contacts of
the EFI main relay (Marking: EFI) and supplying power to terminal +B of the ECM.
WIRING DIAGRAM
DI01L±07

A09291BE6653
A09273
ON
+B
E1
(±) (+)
± DIAGNOSTICSENGINE
DI±117
INSPECTION PROCEDURE
1 Check voltage between terminals +B and E1 of ECM connector.
PREPARATION:
(a) Remove the glove compartment (See Pub. No. RM654U,
page SF±64).
(b) Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals +B and E1 of the ECM
connector.
OK:
Voltage: 9 ± 14 V
OK Proceed to next circuit inspection shown on
Problem symptoms table (See page DI±21).
NG
2 Check for open in harness and connector between terminal E1 of ECM and body
ground (See page IN±29).
NG Repair or replace harness or connector.
OK
3 Check EFI main relay (Marking: EFI) (See Pub. No. RM654U, page SF±40).
NG Replace EFI main relay.
OK
4 Check EFI fuse (See page DI±110, step 2).
NG Check for short in all harness and components
connected to EFI fuse.
OK

A00355
IGN Fuse
Instrument Panel J/B
DI±118
± DIAGNOSTICSENGINE
5 Check for open in harness and connector between EFI main relay (Marking: EFI)
and battery, and EFI main relay and ECM (See page IN±29).
NG Repair or replace harness or connector.
OK
6 Check IGN fuse.
PREPARATION:
Remove the IGN fuse from the instrument panel J/B.
CHECK:
Check the continuity of the IGN fuse.
OK:
Continuity
NG Check for short in all harness and components
connected to IGN fuse.
OK
7 Check ignition switch (See Pub. No. RM654U, page BE±14).
NG Replace ignition switch.
OK
Check for open in harness and connector between ignition switch and EFI main relay, and EFI
main relay and body ground (See page IN±29).

± DIAGNOSTICSAUTOMATIC TRANSAXLE
DI±149
Chapter 2: On±Vehicle Repair
(
: A140E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM385U)
SymptomSuspect AreaSee page
Vehicle does not move in any forward positions and reverse posi-
tion
1. Manual valve
2. Throttle valve
3. Primary regulator valve
4. Off±vehicle repair matrix chart





±
Vehicle does not move in R position1. Off±vehicle repair matrix chart±
No up±shift (1st " 2nd)1. 1±2 shift valve
2. Off±vehicle repair matrix chart

±
No up±shift (2nd " 3rd)1. 2±3 shift valve
2. Off±vehicle repair matrix chart

±
No up±shift (3rd " O/D)1. 3±4 shift valve
2. Off±vehicle repair matrix chart

±
No down±shift (O/D " 3rd)1. 3±4 shift valve

No down±shift (3rd " 2nd)1. 2±3 shift valve

No down±shift (2nd " 1st)1. 1±2 shift valve

No lock±up or No lock±up off1. Lock±up relay valve
2. Off±vehicle repair matrix chart

±
Harsh engagement (N " D)1. C1 accumulator
2. Off±vehicle repair matrix chart

±
Harsh engagement (N " R)1. C2 accumulator
2. Off±vehicle repair matrix chart

±
Harsh engagement (N " L)1. Low coast modulator valve

Harsh engagement (Lock±up)1. Lock±up relay valve
2. Off±vehicle repair matrix chart

±
Harsh engagement (1st " 2nd " 3rd " O/D)
1. Throttle modulator valve
2. Cut back valve
3. Throttle valve





Harsh engagement (2nd " 3rd)1. C2 accumulator

Harsh engagement (3rd " O/D)1. B0 accumulator

Harsh engagement (O/D " 3rd)1. C0 accumulator
2. B
0 accumulator




Slip or shudder (Forward and reverse)
1. Throttle valve
2. Oil strainer
3. Off±vehicle repair matrix chart



±
No engine braking (1st: L position)1. Low coast modulator valve
2. Off±vehicle repair matrix chart

±
No engine braking (2nd: 2 position)1. 2nd coast modulator valve
2. Off±vehicle repair matrix chart

±
No kick±down
1. 1±2 shift valve
2. 2±3 shift valve
3. 3±4 shift valve

D02260
1 Shift Solenoid
Valve SLECM Transaxle
E1P8
E6SL
± DIAGNOSTICSAUTOMATIC TRANSAXLE
DI±161
DTC P0773 Shift Solenoid E Electrical Malfunction
(Shift Solenoid Valve SL)
CIRCUIT DESCRIPTION
The shift solenoid valve SL is turned ON and OFF by signals from the ECM to control the hydraulic pressure
acting on the lock±up relay valve, which then controls operation of the lock±up clutch.
Fail safe function
If the ECM detects a malfunction, it turns the shift solenoid valve SL OFF.
DTC No.DTC Detecting ConditionTrouble Area
P0773
Either (a) or (b) is detected for 1 time.(2 trip detection logic)
(a) Solenoid resistance is 8 W or less short circuit when sole-
noid is energized.
(b) Solenoid resistance is 100 kW or more open circuit when
solenoid is not energized.

Open or short in shift solenoid valve SL circuit

Shift solenoid valve SL

ECM
WIRING DIAGRAM
DI035±05

D06504
Combination
Meter
R
C10
2
L8
11
6 C10
C10R±B
13
O
Y16IF1
IF1L±W
YInstrument
Panel J/BECM
1H
1V10
5
19
18
17
6 E4
E4
E4
E7R2 L
B
+
NSW Y
L±W
R±B A
J23J27
J24 CC R±B Park/Neutral
Position Switch
P1
8 3 4
P1
P1Y5
6
5
P1L±W
R±BJ22
Junction
Connector
EEE
J22 Junction
ConnectorD
D D
R±B 3
IG3
B±W
B±W B±W
B±W Junction
Connector
B
BB
J22
Junction
Connector 11
IG2 P12
P16
N RB
P RL2L LL
GR J19
Junction
Connector
D
DR±L
R±L 2R±L
IG2
F
F
J24 Junction
ConnectorR±L
1
1
1K 1JGAUGE
B±Y 24
I10 Ignition Switch
I10
I10 I107
8
R43
1K
1J STARTER Instrument Panel J/B
Instrument Panel J/B W
W±R AM1
1B
2L12
55 1B
1K 1K
2A 41
AM2 W±R
Instrument Panel J/B Instrument Panel J/B
Engine Room J/B No.2 12 F14 F14
ALT
11F9 F11B±RB±R
B±G
FL
MAIN
BatteryB
J7 J8 Junction Connector
10
GRCB
IG2J7 J6GR B
ST Relay
2B3
115
9
2J2D
2K 53
12 Engine Room J/B No.2
J9 Junction ConnectorStarter
A
IF MAIN IG2 IG2 DI±166
± DIAGNOSTICSAUTOMATIC TRANSAXLE
WIRING DIAGRAM

DI03D±04
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM
DI±181
DIAGNOSTIC TROUBLE CODE CHART
HINT:

Using SST 09843 ±18020, connect the terminals Tc and E1, and remove the short pin.

If any abnormality is not found when inspection parts, inspect the ECU.

If a malfunction code is displayed during the DTC check, check the circuit listed for the code. For details
of each code, turn to the page referred to under the ºSee pageº for respective ºDTC No.º in the DTC
chart.
DTC No.
(See Page)Detection ItemTrouble Area
11
(DI±186)Open circuit in ABS solenoid relay circuit
ABS solenoid relay
12
(DI±186)Short circuit in ABS solenoid relay circuit

ABS solenoid relay

ABS solenoid relay circuit
13
(DI±191)Open circuit in ABS motor relay circuit
ABS motor relay
14
(DI±191)Short circuit in ABS motor relay circuit

ABS motor relay

ABS motor relay circuit
21
(DI±195)Open or short circuit in 2±position solenoid circuit for right front
wheel
ABS actuator

SFRR or SFRH circuit
22
(DI±195)Open or short circuit in 2±position solenoid circuit for left front
wheel
ABS actuator

SFLR or SFLH circuit
23
(DI±195)Open or short circuit in 2±position solenoid circuit for right rear
wheel
ABS actuator

SRRR or SRRH circuit
24
(DI±195)Open or short circuit in 2±position solenoid circuit for left rear
wheel
ABS actuator

SRLR or SRLH circuit
31
(DI±198)Right front wheel speed sensor signal malfunction
32
(DI±198)Left front wheel speed sensor signal malfunction
Right front, left front, right rear and left rear speed sensor
Eh d i it33
(DI±198)Right rear wheel speed sensor signal malfunction

Each speed sensor circuit

Speed sensor rotor
34
(DI±198)Left rear wheel speed sensor signal malfunction
33, 34
(DI±203)Rear speed sensor rotor faulty

Rear axle hub

Right rear, left rear speed sensor

Rear speed sensor circuit
41
(DI±204)Power source voltage down

Battery

Charging system

Power source circuit
49
(DI±207)Open circuit in stop light switch circuit
Stop light switch

Stop light switch circuit
51
(DI±209)Pump motor is locked
ABS pump motor
Always ON
(DI±211)Malfunction in ECU
ECU

Battery

DI03E±04
F01172
Sensor Rotor
ABS Warning Light
ABS ECU
DLC 1
Front Speed Sensor
ABS Actuator
ABS Solenoid
Relay
ABS Motor Relay
Sensor RotorFront Speed
Sensor
Stop Light SwitchDLC 2
Rear Speed Sensor DI±182
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM
PARTS LOCATION