instrument panel TOYOTA CAMRY 1999 Service Manual Online

S05335
TOYOTA hand±held tester
DLC3
BR3904
ON
OFF0.13 sec.
0.13 sec. DI±392
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
627 Author: Date:
3. INSPECT DIAGNOSIS (CHECK MODE)
HINT:
TOYOTA hand±held tester only: Compared to the Normal
mode, the Check mode has high sensing ability to detect mal-
functions. Furthermore, the same diagnostic items which are
detected in Normal mode can also be detected in Check mode.
(a) Check the DTC.
(1) Check the initial conditions.

Battery positive voltage 11 V or more

Throttle valve fully closed

Transaxle in P position

Air conditioning switched off
(2) Turn the ignition switch OFF.
(3) Prepare a TOYOTA hand±held tester.
(4) Connect the TOYOTA hand±held tester to DLC3 at
the lower side of the instrument panel.
(5) Turn the ignition switch ON and switch the TOYOTA
hand±held tester ON.
(6) Switch the TOYOTA hand±held tester from Normal
mode to Check mode (Check that the MIL flashes).
(7) Start the engine (MIL goes out after the engine
starts).
(8) Simulate the conditions of the malfunction de-
scribed by the customer.
NOTICE:
Leave the ignition switch ON until you have checked the
DTCs, etc.
(9) After simulating the malfunction conditions, use the
TOYOTA hand±held tester diagnosis selector to
check the DTCs and freeze frame data, etc.
HINT:
Take care not to turn the ignition switch OFF, as turning it off the
diagnosis system switches from Check mode to Normal mode,
so all DTCs, etc. are erased.
(10) After checking the DTC, inspect the applicable cir-
cuit.

D01820
Combination
Meter
R
C8R ± B
13
IG13
2
L8
11
6 C8
C8O
Y16
IG13
*3 L ± W
*4 O
1HInstrument
Panel J/BECM
1V Park/Neutral
Position Switch
P1
L ± W
B ± WII2
E
8 34
P1
P1 P12Y
R ± BII2
J29
Junction
Connector E
E
Y10
5
Y19
15
*1
*2
E7
E7
E7
E7
E7
E7R2 L
1816
*1
*2
17
22B
+
NSW *3 L ± W
*4 O
R ± B
R ± B
B ± W
DD
D
J29
Junction
Connector
J27J27
J28 CC
A
R ± B
B ± W 5
6
3
11II3
II2
B
BB R ± L A
A
J21
Junction
Connector
J28
Junction
Connector
5 2II2R ± L
F
F6
B ± R
F9
ALT
B ± G
B ± R
1
112F9
F4F6
FL
MAIN
BatteryAM1
1B
2L12
55 1B
1K1K
2A 41
AM2 W ± R
B GR
II2
W ± R
10*5
*6GR
B ± O
C
J8B*5
*6GR
B ± O
BW2
74
8 I16 I16
I16 I16Ignition Switch
B ± Y
R11
43 1K
1K1J
1J GAUGE
STARTER
MAINST Relay
2BB ± W
3
115
9
2J2D
2K 5
3
12 Y
J29
Junction
Connector
J27, J28
Junction Connector
*3 L ± W
*4 O
Instrument Panel J/B
Instrument Panel J/B Instrument Panel J/B
Engine Room J/B No.2
J11 Junction Connector
*1: w/ Engine Immobiliser System
*2: w/o Engine Immobiliser System
*3: TMC Made*4: TMMK Made
*5: TMC Made w/o Traction Control
*6: Except TMC Made w/o Traction ControlInstrument Panel J/B
Starter
J7A
IK R ± L
J7 J8 Junction Connector Engine Room J/B No.2 R ± L
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
DI±425
660 Author: Date:
WIRING DIAGRAM

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

FI0534
DI02E±02
S05335
TOYOTA hand±held tester
DLC3
DI±438
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
673 Author: Date:
PRE±CHECK
1. DIAGNOSIS SYSTEM
(a) Description

When troubleshooting OBD II vehicles, the only dif-
ference from the usual troubleshooting procedure
is that you connect to the vehicle an OBD II scan
tool complying with SAE J1987 or TOYOTA hand±
held tester, and read off various data output from
the vehicle's ECM.
OBD II regulations require that the vehicle's on±
board computer lights up the Malfunction Indicator
Lamp (MIL) on the instrument panel when the com-
puter detects a malfunction in the computer itself or
in drive system components which affect vehicle
emissions. In addition to the MIL lighting up when
a malfunction is detected, the applicable DTCs pre-
scribed by SAE J2012 are recorded in the ECM
memory. (See page DI±211)
If the malfunction only occurs in 3 trips, the MIL goes
off but the DTCs remain recorded in the ECM
memory.

To check the DTCs, connect an OBD II scan tool or
TOYOTA hand±held tester to DLC3 on the vehicle.
The OBD II scan tool or TOYOTA hand±held tester
also enables you to erase the DTCs and check
freeze frame data and various forms of engine data
(For instruction book).
DTCs include SAE controlled codes and Manufac-
turer controlled codes.
SAE controlled codes must be set as prescribed by
the SAE, while Manufacturer controlled codes can
be set freely by the manufacturer within the pre-
scribed limits (See DTC chart on page DI±449).

FI0534
S05335
TOYOTA hand±held tester
DLC3
DI±440
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
675 Author: Date:
2. INSPECT DIAGNOSIS (NORMAL MODE)
(a) Check the MIL.
(1) The MIL comes on when the ignition switch is turned
ON and the engine is not running.
HINT:
If the MIL does not light up, troubleshoot the combination meter
(See page BE±2).
(2) When the engine is started, the MIL should go off.
If the lamp remains on, the diagnosis system has
detected a malfunction or abnormality in the sys-
tem.
(b) Check the DTC.
NOTICE:
TOYOTA hand±held tester only:
When the diagnostic system is switched from normal mode
to check mode, it erases all DTCs and freeze frame data re-
corded in normal mode. So before switching modes, al-
ways check the DTCs and freeze frame data, and note them
down.
(1) Prepare an OBD II scan tool (complying with SAE
J1978) or TOYOTA hand±held tester.
(2) Connect the OBD II scan tool or TOYOTA hand±
held tester to DLC3 at the lower of the instrument
panel.
(3) Turn the ignition switch ON and turn the OBD II scan
tool or TOYOTA hand±held tester switch ON.
(4) Use the OBD II scan tool or TOYOTA hand±held
tester to check the DTCs and freeze frame data and
note them down (For operating instructions, see the
OBD II scan tool's instruction book).
(5) See page DI±449 to confirm the details of the DTCs.
NOTICE:
When simulating symptoms with an OBD II scan tool (ex-
cluding TOYOTA hand±held tester) to check the DTCs, use
normal mode. For codes on the DTCs chart subject to º2
trip detection logicº, turn the ignition switch off after the
symptoms have been simulated the 1st time. Them repeat
the simulation process again. When the program has DTCs
are recorded in the ECM.

S05335
TOYOTA hand±held tester
DLC3
BR3904
ON
OFF0.13 sec.
0.13 sec.
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±441
676 Author: Date:
3. INSPECT DIAGNOSIS (CHECK MODE)
HINT:
TOYOTA hand±held tester only: Compared to the normal
mode, the check mode has high sensing ability to detect mal-
functions. Furthermore, the same diagnostic items which are
detected in Normal mode can also be detected in Check mode.
(a) Check the DTC.
(1) Check the initial conditions.

Battery positive voltage 11 V or more.

Throttle valve fully closed.

Transaxle in P position.

Air conditioning switched off.
(2) Turn the ignition switch OFF.
(3) Prepare a TOYOTA hand±held tester.
(4) Connect the TOYOTA hand±held tester to DLC3 at
the lower of the instrument panel.
(5) Turn the ignition switch ON and switch the TOYOTA
hand±held tester ON.
(6) Switch the TOYOTA hand±held tester from Normal
mode to Check mode (Check that the MIL flashes).
(7) Start the engine (MIL goes out after the engine
starts).
(8) Simulate the conditions of the malfunction de-
scribed by the customer.
NOTICE:
Leave the ignition switch ON until you have checked the
DTCs, etc..
(9) After simulating the malfunction conditions, use the
TOYOTA hand±held tester diagnosis selector to
check the DTCs and freeze frame data, etc..
HINT:
Take care not to turn the ignition switch OFF, as turning it off
switches the diagnosis system from Check mode to Normal
mode, so all DTCs, etc. are erased.
(10) After checking the DTC, inspect the applicable cir-
cuit.

D01897
Combination Meter
Ignition Switch Except California, w/ Engine Immobilizer and / or TRAC:
R
2
L8
11
6 C8
13
165
R±B
L±W YIJ1
IG310
1H
1VECM
1
E7
B+ 4
II2 P1
II3D J/C J2910 C8
C8O
Y
R±BY
R 2L
E7
E7
E10 II2 P1
P1
P1D D
J/C J29 E
15
14
B±W A
GR3
6CL±W (*1, *3)
O (*2, *4) LL
2L
RL R±L
J27J28
J/C
10FE E Y
Y
L±W L±W6 5
8
R±BR±BR±B
5
P1 P12
AJ/C
J24
R±LA J27
C
B±W
B
BB
J/C J26
B±W
II2II22
R±L
J28J/C J28
F
J2811
II2
B±WBBJ/C J29NSW
R±L
B±W 1
1
GAUGE
1K 1J I16 I16
I16 I16
1J 1K3
4 Starter B±Y
R 4
8 2
7IG1
AM1
ST2
AM2 1B
2L 2AW
W±R 2
1K AM1
2 1 1
1B 1K5 5
GR (*4)
B±O (*5)
W±R
41
AM2
B
B B±R
B±R
B±R
1
2 F9
F9
ALT
11F4
F6
B±G
BatteryB
C
J8J7GR (*4)
B±O (*5)3
1
2535
2B
2D
2J
2K 11
12
ST
Relay
B±R
Starter
W±BAJ/C J11
IG
Left Kick
Panel Park/Neutral Position Switch
9
J/C CInstrument Panel J/B
Fusible
Link BlockEngine Room J/B No.2
MAIN 3
FL
Main
*1: w/ Engine Immobilizer System
*2: w/o Engine Immobilizer System
*3: TMC Made Ex. USA w/ TRAC
*4: TMMK Made, TMC Made USA w/ TRAC DI±480
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
715 Author: Date:
WIRING DIAGRAM

D01898
Combination Meter
Ignition Switch California, w/ Engine Immobilizer and / or TRAC:
R
2
L8
11
6 C8
13
165
R±B
L±W YIJ1
IG310
1H 1VECM
12
B+ 4
II2 P1
II3D J/C J29 C8
C8O
Y
R±BY
R 2 L
II2
P1
P1
P1D D
J/C J29 E
20
B±W A
GR3
6L±W (*1, *3)
O (*2, *4) LL
2L
RL R±L
J27J28
J/C
10FE E
Y Y
L±W L±W65
8
R±B
R±BR±B
5
P1P12
AJ/C
J24
R±LJ27
B±W
BB
II2II22
R±L
J28J/C J28
F
J28J/C J29NSW
R±L
B±W 1 1
GAUGE
1K1J
I16I16
I16 I16 1J1K3 4
Starter B±Y
R 4
8 2
7IG1
AM1
ST2
AM2 1B
2L 2AW
W±R 2
1K AM1
2 1 1
1B1K5 5
GR (*4)
B±O (*5)
W±R
41
AM2
B
B B±R
B±R
B±R
12
F9 F9
ALT
11
F4F6
B±G
FL
Main
BatteryF
J8
J7GR (*4)
B±O (*5)3
12535
2B
2D
2J2K 11
12
ST
Relay
B±R
Starter
W±BAJ/C J11
IG
Left Kick
Panel *1: w/ Engine Immobilizer System
*2: w/o Engine Immobilizer System
*3: TMC Made Ex. USA w/ TRAC
*4: TMMK Made, TMC Made USA w/ TRAC Park/Neutral Position SwitchE8
3
2
B±W B B
J/C J26II2 11
B±W
B
C9
J/C C
E8
E8E8
3C
CA
Engine Room J/B No.2
MAINInstrument Panel J/B
Instrument Panel J/B
Fusible
Link Block
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±481
716 Author: Date:

D01900
ECM
4E7OD2B+
G±O
IG1 C
CC
O2 O/D Main
Switch O/D Indicator
Light
C8 712
R±L
D
Ignition Switch
11K2
1DGAUGE J/C J4
G±OG±O
IG3
J/C J6
G±O
O2
B±Y
AM11B 1K
C10
AM1
F9 D
R±L
I16 W 21
24
I16 2
12
B±R
B±R
B±R1
2
F9Fusible Link Block
FL Main
Battery 1
F4B±GW±B
A
J/C J5
IF A
W±B
Left Kick Panel
*1: Except California, w/ Engine Immobilizer and / or TRAC
*2: California, w/ Engine Immobilizer and / or TRACInstrument Panel J/B
Instrument Panel J/B11106 *2*1
ALTE8
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±487
722 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 at OFF position, the O/D OFF indicator light lights up, and the ECM prohibits shifting over-
drive.
WIRING DIAGRAM
DI1KD±01

F07156
Ignition
Switch
W24
AM1
IG1
B±YInstrument Panel J/B
19
1K
ECU±IG1JB±RJ/C
J12
C
CB±R13
A19ABS ECU
IG1
Instrument Panel J/B
21
1K
1B
AM1
B±R
FL Block
1
1
F4 F9
ALT
B±G
FL MAIN
Battery
IG A
Instrument
Panel Brace LH J11
Junction
ConnectorW±B
W±B12
A19
A1925GND1
GND2 DI±520
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
755 Author: Date:
DTC 41 IG Power Source Circuit
CIRCUIT DESCRIPTION
This is the power source for the ECU, hence the actuators.
DTC No.DTC Detecting ConditionTrouble Area
41
Condition 1. or 2. is detected:
1. Vehicle speed is at 3 km/h (1.9 mph) or more and ECU
terminal IG1 voltage is 9.5 V or less , which continues
for 10 sec. or more.
2. When IG1 terminal voltage is less than 9.5 V, there is
open circuit in the motor relay or in the solenoid relay, or
the solenoid circuit malfunction.

Battery

Charging system

Power source circuit
Fail safe function:
If trouble occurs in the power source circuit, the ECU cuts off current to the ABS solenoid relay and prohibits
ABS control.
WIRING DIAGRAM
DI03M±03