instrument panel TOYOTA CAMRY 1999 Service Repair Manual

F00168
BatteryABS & TRAC
Solenoid Relay Engine Room R/B No. 3
3ABS & TRAC
ECU
A8 1
R±L
C 5 4
IG3 IK2 6
J/C C10
EA4ABS Warning Light 8
12 II3
G±B23 2
22 ABS & TRAC
Actuator
DLC1 Short
Pin
WA
J29 33 3 3
3
W±B4
ABS & TRAC
ECUR±L
4
R±L
II3 5
G±B
C C G±B R±LC107
ABS & TRAC ECU R±LR±L
J/C
D 1D
GAUGE Instrument Panel J/B
A16 J4 D
G±B4 W±L
2
DI±612
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
847 Author: Date:
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
If the ECU detects a trouble, it lights the ABS warning light while at the same time prohibiting ABS control.
At this time, the ECU records a DTC in memory.
Connect terminals Tc and E
1 of the DLC1 or DLC2 to make the ABS warning light blink and output the DTC.
WIRING DIAGRAM
INSPECTION PROCEDURE
Troubleshoot in accordance with the chart below for each trouble symptom.
ABS warning light does not light upGo to step 1
ABS warning light remains onGo to step 3
1 Check ABS warning light.
See combination meter troubleshooting on page BE±2.
NG Repair bulb or combination meter assembly.
OK
DI04V±04

F00114
TRAC OFF
Indicator LightABS & TRAC ECU
CJ32 C10 R±L7
DLC2
17 J/CJ/C
2
IG3
TRC
Instrument Panel J/B
1D
J4 D319
L
A16
D R±L
C10LL
L
A16 TRAC Cut Switch
W±B12
11
LGWT
CSW
J7
J114 1
IGJ8
A 8
1JW±B
A J/C
1J7 Instrument Panel J/B
W±B
A J/CTRAC OFF
Indicator LightABS & TRAC ECU
C
C10 R±L7
DLC2
17 J/CJ/C
2
IG3
TRC
Instrument Panel J/B
1D
J4 D319
L
A16
D R±L
C10LL
L
A16 TRAC Cut Switch
W±B12
11
LGWT
CSW
J7
J114 1
IGJ8
A 8
1JW±B
A J/C
1J7 Instrument Panel J/B
W±B
A J/CTRAC OFF
Indicator LightABS & TRAC ECU
C
C10 R±L7
DLC2
17 J/CJ/C
2
IG3
TRC
Instrument Panel J/B
1D
J4 D319
L
A16
D R±L
C10LL
L
A16 TRAC Cut Switch
W±B12
11
LGWT
CSW
J7
J114 1
IGJ8
A 8
1JW±B
A J/C
1J7 Instrument Panel J/B
W±B
A J/CTRAC OFF
Indicator LightABS & TRAC ECU
C10 R±L7
DLC2
17 J/CJ/C
2
IG3
TRC
Instrument Panel J/B
1D
J4 D319
L
A16
D R±L
C10LL
L
A16 TRAC Cut Switch
W±B12
11
LGWT
CSW
J7
J114 1
IGJ8
A 8
1JW±B
A J/C
1J7 Instrument Panel J/B
W±B
A J/C
TRAC OFF
Indicator LightABS & TRAC ECU
C10
GAUGER±L7
DLC2
17 J/CJ/C
2
IG3
TRC
Instrument Panel J/B
1D
J4 D319
L
A16
D R±L
C10LL
L
A16 TRAC Cut Switch
W±B12
11
LGWT
CSW
J7
J114 1
IGJ8
A 8
1JW±B
A J/C
1J7 Instrument Panel J/B
W±B
A J/CJ32 J32
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±617
852 Author: Date:
TRAC OFF Indicator, TRAC Cut Switch Circuit
CIRCUIT DESCRIPTION
This is the TRAC control main switch. When the TRAC cut switch is pushed on, TRAC control goes off and
the TRAC OFF indicator lights up. This indicator blinks for warnings when the trouble occurs and for
displaying DTC.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check DTC.
Check DTC on page DI±574.
YES Repair circuit indicated by the code output.
NO
DI04Y±04

F00097
Instrument Panel J/B
1DR±L
C10 C8 IND 2J/C
J4LG18
A16 R±LSLIP Indicator LightABS & TRAC ECU
IG3 75
LG3
D D Instrument Panel J/B
1DR±L
C10 C8 IND 2J/C
J4LG18
A16 R±LSLIP Indicator LightABS & TRAC ECU
IG3 75
LG3
D D Instrument Panel J/B
1DR±L
C10 C8 IND 2J/C
J4LG18
A16 R±LSLIP Indicator LightABS & TRAC ECU
IG3 75
LG3
D D Instrument Panel J/B
1DR±L
C10 C8 IND 2J/C
J4LG18
A16 R±LSLIP Indicator LightABS & TRAC ECU
IG3 75
LG3
D D Instrument Panel J/B
1DR±L
C10 C8 IND 2J/C
J4LG18
A16 R±LSLIP Indicator LightABS & TRAC ECU
IG3 75
LG3
D D Instrument Panel J/B
1DR±L
C10 C8 IND 2J/C
J4LG18
A16 R±LSLIP Indicator LightABS & TRAC ECU
IG3 75
LG3
D DInstrument Panel J/B
1DR±L
C10 C8 IND 2
GAUGEJ/C
J4LG18
A16 R±LSLIP Indicator LightABS & TRAC ECU
IG3 75
LG3
D D
DI±620
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
855 Author: Date:
SLIP Indicator Light Circuit
CIRCUIT DESCRIPTION
The SLIP indicator blinks during TRAC operation.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check SLIP indicator light.
See combination meter troubleshooting on page BE±2.
NG Repair or replace combination meter.
OK
2 Check for short circuit in harness and connector between ABS & TRAC ECU and
SLIP indicator light (See page IN±31).
NG Repair or replace harness or connector.
OK
Check and replace ABS & TRAC ECU.
DI04Z±04

H02288
15A CIG
L±R 2Airbag Sensor
Assembly 2
3 4
6 7
6
3B±R
65A IGN
C18 1K
IG 1K
1N1N
C18 Instrument Panel J/B
30A AM2
W±R W±R1
4 40A AM1
2L
1K2A
1B
1K1B
55 W2
1
2 Instrument Panel J/B
AF9 F4F6 FL MAIN
B±G
100A
ALT
Instrument Panel J/B Junction
Connector
W±B7
1J 1NW±BC18
1 Battery
1 1
2
5
B±O
GR
ACCIG2 Fusible Link Block
27
E1 Ignition Switch1 B±RB
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±787
1022 Author: Date:
DTC Normal Source Voltage Drop
CIRCUIT DESCRIPTION
The SRS is equipped with a voltage±increase circuit (DC±DC converter) in the airbag sensor assembly in
case the source voltage drops.
When the battery voltage drops, the voltage±increase circuit (DC±DC converter) functions to increase the
voltage of the SRS to normal voltage.
The diagnosis system malfunction display for this circuit is different from other circuits that is when the SRS
warning light remains lit up and the DTC is a normal code, source voltage drop is indicated.
Malfunction in this circuit is not recorded in the airbag sensor assembly, and the source voltage returns to
normal, the SRS warning light automatically goes off.
DTC No.Diagnosis
(Normal)Source voltage drop
WIRING DIAGRAM
DI1BN±08

H02289
2 Airbag Sensor
Assembly
237
B±Y
12 IG2
C18LG
AB10A
ECU±B
Short Pin
W±R
1W Engine Room J/B No.2
11 B
II3 A
A 3
LG
5DLC1 1 Battery
4 J3 Junction
Connector
1G2J 2A B±G
F4 F6 FL MAINFusible Link Block
1
1
TCP±B7Instrument Panel J/B
C18
B A LAW±R
LG
13
TC B±Y (*1)
LG (*2)
LG±R (*3)
P±B (*4)
II3 LG±R11
B B
TC LG±R J3 Junction
Connector
19
DLC2 SRS Warning Light
*1: TMMK Made, 1MZ±FE
*2: Except *1
*3: TMC Made
*4: TMMK Made DI±790
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1025 Author: Date:
SRS Warning Light Circuit Malfunction (Always lights up, when
ignition switch is in LOCK position.)
CIRCUIT DESCRIPTION
The SRS warning light is located on the combination meter.
When the SRS is normal, the SRS warning light lights up for approx. 6 seconds after the ignition switch is
turned from the LOCK position to ACC or ON position, and then turns off automatically.
If there is a malfunction in the SRS, the SRS warning light lights up to inform the driver of the abnormality.
When terminals Tc and E1 of the DLC1 are connected, the DTC is displayed by blinking the SRS warning
light.
WIRING DIAGRAM
DI1BO±08

DI05O±03
I00217
I00216
I00215
I00241
Ignition Switch
Key Unlock Warning Switch
Wireless Door Lock ECU
Transmitter
Instrument Panel Junction Block
Integration Relay
Engine Room Junction Block

Door Lock Motor

Door Unlock Detection
Switch
Door Courtesy Switch
DOME FuseDoor Key Lock and Unlock Switch

Door Lock Motor

Door Unlock
Detection Switch
Door Lock Motor

Door Unlock
Detection Switch
Door Courtesy Switch
Door Courtesy Switch
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI±807
1042 Author: Date:
PARTS LOCATION

DI05R±03
I00225
Wireless Door Lock ECU
SHORT PIN
2A2J
DOME Engine Room J/B No.2
FL BLOCK
BatteryRR± J16J17
W±BJ5
A
GND B±G1
B12
FL MAIN
A
IF R
RED 1
1
1 1
8
12 R±YDIODE(DOME) 1W
1G
R8 Instrument
panel J/B F6
F4
J/C
W±B DI±810
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1045 Author: Date:
CIRCUIT INSPECTION
ECU Power Source Circuit
CIRCUIT DESCRIPTION
Battery positive voltage is always applied to the terminal +B of the wireless door lock ECU.
WIRING DIAGRAM

I08425
Theft Deterrent ECU
LSWD14
T4
LSWP
LSWR15
T4
16
T4Wireless Door
Lock ECU
W±B
*2
Door Unlock Detection
Switch Rear RH IE
Instrument Panel J/B J6
J/C
F
1111
L±RF
F
YL±R
LSWD
LSWP
LSWR W6
12
W6
13
W6 L±R L±R
IE1
Door Unlock Detection
Switch Rear LHDoor Unlock Detection
Switch Front RH Door Unlock
Detection Switch
Front LH
W±B*1W±B*1J38
20
W±B
J/C A
A
1
3 243 2
3 23 2 IE1
W±B3C
L±YE
J101V7
1GJ37 J/C
C
CY
Y Y11
IM1
1*1
4*2
W±B*1J39
J/CW±B*1
A
A
IM1 20
W±B
BN
IJ
IK L±Y J/C
D
J9
D J9 EJ10
L±Y L±Y L±Y
L±YL±Y L±Y
4
BO12
IF23
IN24
BP14
1
W±BW±B6
BP1
4 1
W±B
W±B6
BO1J40
J/CBL
4*1
1*2
*1: TMC Made
*2: TMMK Made W±BW±B
*2
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI±813
1048 Author: Date:
Door Unlock Detection Switch Circuit
CIRCUIT DESCRIPTION
The door unlock detection switch is built into the door lock motor assembly. The switch is OFF when the
door lock knob is in Lock position, and is ON When the Knob is in Unlock position.
Furthermore, the door unlock detection switch circuit has terminal +B connected inside the theft deterrent
ECU, when the door unlock detection switch is OFF, battery positive voltage is applied to the terminal of the
door unlock detection switch circuit of the wireless door lock ECU.
WIRING DIAGRAM
DI05S±03

I08426
Wireless Door Lock ECU
Theft Deterrent ECU Integration Relay
UL3 R±G9
T4 I18
UL2 10
T4 UL27
W6R±G R±GI18
B
J6
J/C
3
IE1
74*1
19*25*1
20*2
B
B
B
R±G
R±G
Instrument Panel J/B
1G3
1V
IE 20J37 J/C
RH
J38 W±B
IE1
J/C AA W±B
*3W±B*3
W±B*4
32
UNLOCK LOCK
Door Key
Lock and
Unlock
SwitchLL
L AA
A
3IM1
32
1
UNLOCK LOCK
L
J39
J/C AA W±B
*3W±B*3
W±B*4
20 IM1W±B
1LH
IJ *1: w/o Theft Deterrent System
*2: w/ Theft Deterrent System
*3: TMC Made
*4: TMMK Made
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI±815
1050 Author: Date:
Door Key Lock and Unlock Switch Circuit (Unlock Side)
CIRCUIT DESCRIPTION
The Key±operated switch is built into the door key cylinder. When the key is turned to the lock side, the lock
terminal of the switch is grounded, and when the key is turned to the unlock side the unlock terminal is
grounded.
Furthermore, the door key lock and unlock switch circuit has terminal +B connected inside the theft deterrent
ECU, when neither the lock nor unlock terminal of the key lock and unlock switch are grounded, battery posi-
tive voltage is applied to the door key lock and unlock switch circuit of the wireless door lock ECU.
( Tr inside the ECU coming ON causes the wireless door lock ECU to output a signal to unlock all the doors.)
WIRING DIAGRAM
DI05T±03

I08427
Wireless Door Lock ECUIntegration Relay
L2 8
T4 I18
L15
W6
BJ37
J/C
4
IE1
7B
B B
1G3
1V
IE 20RH
J38 W±B
IE1
J/C AA W±B
*3W±B*3
W±B*4
32
UNLOCK LOCK
Door Key
Lock and
Unlock
Switch4
IM1
32
1
UNLOCK LOCK
L±W
J39
J/C A
A W±B
*3W±B*3
W±B*4
20 IM1W±B
1LH
IJ*1: w/o Theft Deterrent System
*2: w/ Theft Deterrent System
*3: TMC Made
*4: TMMK Made
Theft Deterrent ECU
W±B Instrument Panel J/BL±W
L±W
L±W L±W3
*1
18*2
B L±W
L±W
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI±817
1052 Author: Date:
Door Key Lock and Unlock Switch Circuit (Lock Side)
CIRCUIT DESCRIPTION
Refer to page DI±815.
Tr inside the wireless door lock ECU coming ON causes the theft deterrent ECU to output a signal to lock
all the doors.
WIRING DIAGRAM
DI05U±03