1994 TOYOTA CAMRY Battery

109
CURRENT FROM THE BATTERY IS ALWAYS FLOWING FROM THE FL MAIN " HEADLIGHT RELAY (COIL SIDE) " TERMINAL 5 OF THE
DAYTIME RUNNING LIGHT RELAY (MAIN) AND TERMINAL 14 OF THE DIMMER SW, HEADLIGHT RELAY (COIL SIDE) " TERMINAL 3 OF
THE INTEGRATION RELAY " TERMINAL 4 " TERMINAL 13 OF THE LIGHT CONTROL SW, FL MAIN " DAYTIME RUNNING LIGHT
RELAY NO. 2 (COIL SIDE) " TERMINAL 17 OF THE DAYTIME RUNNING LIGHT RELAY.
1. DAYTIME RUNNING LIGHT OPERATION
WHEN THE ENGINE IS STARTED, VOLTAGE GENERATED AT TERMINAL L OF THE GENERATOR (ALTERNATOR) IS APPLIED TO
TERMINAL 11 OF THE DAYTIME RUNNING LIGHT RELAY (MAIN).
IF THE PARKING BRAKE LEVER IS PULLED UP (PARKING BRAKE SW ON) AT THIS TIME, THE RELAY IS NOT ENERGIZED, SO THE
DAYTIME RUNNING LIGHT SYSTEM DOES NOT OPERATE. IF THE PARKING BRAKE LEVER IS RELEASED (PARKING BRAKE LEVER
SW OFF), THE SIGNAL IS INPUT TO TERMINAL 8 OF THE RELAY. THIS ACTIVATES THE RELAY ALSO, CURRENT FROM FL MAIN
FLOWES TO DAYTIME RUNNING LIGHT RELAY NO. 2 (POINT SIDE) " HEAD (UPR±LH) FUSE " TERMINAL 1 OF THE HEAD LH±HI "
TERMINAL 2 " TERMINAL 2 OF THE HEAD RH±HI " TERMINAL 1 " TERMINAL 4 OF THE DAYTIME RUNNING LIGHT RELAY NO. 3 "
TERMINAL 2 " TO GROUND, SO BOTH TAIL AND HEADLIGHT UP.
THIS IS HOW THE DAYTIME RUNNING LIGHT SYSTEM OPERATES. ONCE THE DAYTIME RUNNING LIGHT SYSTEM OPERATES AND
HEAD HAVE LIGHT UP, HEAD REMAIN ON EVEN IF THE PARKING BRAKE LEVER IS PULLED UP (PARKING BRAKE SW ON).
EVEN IF THE ENGINE STALLS WITH THE IGNITION SW ON AND THERE IS NO VOLTAGE FROM TERMINAL L OF THE GENERATOR
(ALTERNATOR), HEAD REMAIN ON. IF THE IGNITION SW IS THEN TURNED OFF, AND HEAD ARE TURNED OFF.
IF THE ENGINE IS STARTED WHILE THE PARKING BRAKE LEVER IS RELEASED (PARKING BRAKE SW OFF), THE DAYTIME RUNNING
LIGHT SYSTEM OPERATES AND TAIL, HEADLIGHT UP AS THE ENGINE STARTS.
2. HEADLIGHT OPERATION
*(WHEN THE LIGHT CONTROL SW AT THE HEAD POSITION)
WHEN THE LIGHT CONTROL SW IS SET TO HEAD POSITION, THE CURRENT FLOWING TO THE HEADLIGHT RELAY (COIL SIDE)
FLOWS TO TERMINAL 3 OF THE INTEGRATION RELAY " TERMINAL 4 " TERMINAL 13 OF THE LIGHT CONTROL SW " TERMINAL 11
" GROUND, TURNING THE HEADLIGHT RELAY ON.
THIS CAUSES THE CURRENT FLOWING TO THE HEADLIGHT RELAY (POINT SIDE) " DRL FUSE " DAYTIME RUNNING LIGHT RELAY
NO. 3 (COIL SIDE) AND DAYTIME RUNNING LIGHT RELAY NO. 4 (COIL SIDE) " GROUND, TURNING THE DAYTIME RUNNING LIGHT
RELAY NO. 3 AND NO. 4 ON. ALSO, CURRENT FROM THE HEADLIGHT RELAY (POINT SIDE) TO HEAD (LWR) FUSES " TERMINAL 1
OF THE HEADLIGHTS (LO) " TERMINAL 2 " GROUND, SO THE HEADLIGHTS (LO) LIGHT UP.
*(DIMMER SW AT FLASH POSITION)
WHEN THE DIMMER SW IS SET TO FLASH POSITION, CURRENT FLOWS FROM HEADLIGHT RELAY (COIL SIDE) " TERMINAL 14 OF
THE DIMMER SW " TERMINAL 9 " GROUND, TURNING THE HEADLIGHT RELAY ON. AT THE SAME TIME, SIGNALS ARE OUTPUT
FROM TERMINAL 12 AND TERMINAL 14 OF THE DIMMER SW TO TERMINAL 16 AND TERMINAL 5 OF THE DAYTIME RUNNING LIGHT
RELAY (MAIN), ACTIVATING THE DAYTIME RUNNING LIGHT RELAY (MAIN) AND ALSO THE DAYTIME RUNNING LIGHT RELAY NO. 2.
WHEN THE HEADLIGHT RELAY AND DAYTIME RUNNING LIGHT RELAY (MAIN) ARE ACTIVATED, THE HEADLIGHTS (LO AND HI) THEN
LIGHT UP.
*(DIMMER SW AT HIGH POSITION)
WHEN THE LIGHT CONTROL SW IS SET TO HEAD POSITION, A SIGNAL IS OUTPUT FROM TERMINAL 13 OF THE LIGHT CONTROL SW
" TERMINAL 4 OF THE INTEGRATION RELAY " TERMINAL 3 " TERMINAL 5 OF THE DAYTIME RUNNING LIGHT RELAY (MAIN).
WHEN THE DIMMER SW IS SET TO HIGH POSITION, A SIGNAL IS OUTPUT FROM TERMINAL 12 OF THE DIMMER SW TO TERMINAL 16
OF THE DAYTIME RUNNING LIGHT RELAY (MAIN). THESE SIGNALS ACTIVATE DAYTIME RUNNING LIGHT RELAY NO. 2, SO CURRENT
FLOWS FROM DAYTIME RUNNING LIGHT RELAY NO. 2 (POINT SIDE) " HEAD (UPR±LH) FUSE " TERMINAL 1 OF THE HEADLIGHT
LH±HI " TERMINAL 2 " DAYTIME RUNNING LIGHT RELAY NO. 4 (POINT SIDE) " GROUND, AND CURRENT ALSO SIMUTANEOUSLY
FLOWS FROM HEAD (UPR±RH) FUSE " DAYTIME RUNNING LIGHT RELAY NO. 3 (POINT SIDE) " TERMINAL 1 OF THE HEADLIGHT
RH±HI " TERMINAL 2 " DAYTIME RUNNING LIGHT RELAY NO. 4 (POINT SIDE), CAUSING THE HEADLIGHTS (HI SIDE) TO LIGHT UP.
D 4 DAYTIME RUNNING LIGHT RELAY (MAIN)
2±GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
15±GROUND : ALWAYS APPROX. 12 VOLTS
8±GROUND : CONTINUITY WITH THE PARKING BRAKE LEVER PULLED UP (PARKING BRAKE SW ON)
13±GROUND : ALWAYS CONTINUITY
SYSTEM OUTLINE
SERVICE HINTS

11 2
LIGHT AUTO TURN OFF*1 : 1MZ±FE
*
2 : 5S±FE
1
IE IG OFF
TAIL
HE AD A 2A3
A 1A4
LIGHT
CONTROL SW
11213 7WB
G±R
R±B
R G
R±Y R±GB
B
W±B
W±B
10A
GAUGE
Q
Q S
R R
S
DOOR COURTESY SW
FRONT L H
100A ALT
BATTERY FL MAIN
2. 0L
W
FROM POWER SOURCE SYSTEM(
SEE PAGE 64)
FUSE B OX
D12COMBINATION SW C12 FROM POWER SOURCE SYSTE
(
SEE PAGE 64)
2X X X
X
1113
1
1
I13A
1234C12
B
F10
C F16A
F10 (
*1)
(
*2) EF1 1
B 1A 1
C 1(
*1)
(
*2)
B F1 0 , F1 0
AC,F16
BLACK
I13A
INTEGRATION RELAY1 D12
1M 1101H 26
1C 1
1
M1E 4
1B 8TAILLIGHT
RELAY 15
3 2
TO TAIL
FUSE2H 2
2G 72G2
HEADLIGHT
RELAY
20A
DOME
42
31
TO HEAD
FUSE

126
ILLUMINATION
IEI9
I9
I12 3 2
2 1
1 2
4 5
11 1
2 2 EF1 4
100A ALT
G
B
G±R
W±BBWW
G
G
G
GG G B
B
B B
B B
INTEGRATION
RELAY
COMBINATION SW FL MAI N
2. 0L
BATTERY
HAZARD SW
ASHTRAY
ILLUMINATION
CIGARETTE LIGHTER
ILLUMINATION
REAR WINDOW
DEFOGGER SW
OFF
TAIL
HEAD
LIGHT
CONTROL
SW
G GG
I13
C12
H7
A1 8
C5
R5
I12
TO CLOCK
G G
B 1A 1
C 1(
1MZ±FE)
(
5S±FE)B F10 , F10AC,F16
FUSE BOX
1E 41B81D14 TAILLIGHT
RELAY15A
TAIL
3 2 15
3D 5
3C4
3D 93C20 3C21 3D21 3D 20
3D 13C 11 3D11

144
TAILLIGHT (S/D, C/P)
EF1 4
1
11 2
2
2 1
2 1
2 1
2 1
E4 E4 E4 E4 ED1 3
IE EB EA
LIGHT
CONTROL SW
OFF
TAIL
HEAD
G G G G G
G
G
G W±B
W±B
W±B
W±B W±B
W±BW±BGG±RW W B100A ALT
G
FL MAIN
2. 0L
BATTERYINTEGRATION
RELAY
COMBINATION SW
W±B
FRONT CLEARANCE
LIGHT LH
FRONT SIDE
MARKER LH
FRONT CLEARANCE
LIGHT RH
FRONT SIDE
MARKER RH
G
BZ112
G
I13
F3
F5
F4
F6C12
FUSE B OX
B 1A 1(
1MZ±FE)
(
5S±FE)
C 1B F1 0 , F1 0
AC,F16
E4 G
3D 43D 5
1E 41B8TAILLIGHT
RE LAY15A
TAIL
1H7 23 151D 14

148
TAILLIGHT (W/G)
EF1 4
1
11 2
2
2 1
2 1
2 1
2 1
E4 E4 E4 E4 ED1 3
IE EB EA
LIGHT
CONTROL SW
OFF
TAIL
HEAD
G G G G G
G
G
G W±B
W±B
W±B
W±B W±B
W±BW±BGG±RW W B100A ALT
G G
FL MA I N
2. 0L
BATTERYINTEGRATION
RELAY
COMBINATION SW
W±B
FRONT CLEARANCE
LIGHT LH
FRONT SIDE
MARKER LH
FRONT CLEARANCE
LIGHT RH
FRONT SIDE
MARKER RH
G
I13
F3
F5
F4
F6C12
FUSE BOX
B 1A 1
C 1B F10 , F10AC,F16
(
1MZ±FE)
(
5S±FE)
E43D 43D 5
1E 41B8
1D 14 TA I LL I GHT
RE LA Y15A
TA I L
1H7 23 15

174
SRS (SUPPLEMENTAL RESTRAINT SYSTEM)
NOTICE: When inspecting or repairing the SRS (supplemental restraint system), perform the operation in
accordance with the following precautionary instructions and the procedure and precautions in the Repair
Manual for the applicable model year.

Malfunction symptoms of the supplemental restraint system are difficult to confirm, so the diagnostic trouble
codes become the most important source of information when troubleshooting.
When troubleshooting the supplemental restraint system, always inspect the diagnostic trouble codes before
disconnecting the battery.

Work must be started after 90 seconds from the time the Ignition SW is set to the ªLOCKº position and the
negative (±) terminal cable is disconnected from the battery.
(The supplemental restraint system is equipped with a back±up power source so that if work is started within
90 seconds of disconnecting the negative (±) terminal cable of the battery, the SRS may be activated.)
When the negative (±) terminal cable is disconnected from the battery, memory of the clock and audio systems
will be cancelled. So before starting work, make a record of the contents momorized by each memory system.
When work is finished, reset the clock and audio system as before and adjust the clock. This vehicle has tilt
and telescopic steering, power seat and outside rear view mirror and power shoulder belt anchorage, which
are all equipped with memory function, it is not possible to make a record of the customer, and ask the
customer to adjust the features and reset the memory.
To avoid erasing the memory of each memory system, never use a back±up power supply from outside the
vehicle.

When removing the steering wheel pad or handling a new steering wheel pad, keep the pad upper surface
facing upward. Also, lock the lock lever of the twin lock type connector at the rear of the pad and take care
not to damage the connector.
(Storing the pad with its metallic surface up may lead to a serious accident if the SRS inflates for some reason.)

Store the steering wheel pad where the ambient temperature remains below 93°C (200°F), without high
humidity and away from electrical noise.

Never use SRS parts from another vehicle. When replacing SRS parts, replace them with new parts.

Never disassemble and repair the steering wheel pad, center SRS sensor assembly or front airbag sensors.

Before repairing the body, remove the airbag sensors if during repair shocks are likely to be applied to the
sensors due to vibration of the body or direct tapping with tools or other parts.

Do not reuse a steering wheel pad or front airbag sensors.
After evaluating whether the center airbag sensor assembly is damaged or not, decide whether or not to reuse
it. (See the Repair Manual for the method for evaluating the center airbag sensor assembly.)

When troubleshooting the supplemental restraint system, use a high±impedance (Min. 10k
/V) tester.

The wire harness of the supplemental restraint system is integrated with the cowl wire harness assembly and
engine wire harness assembly.
The vehicle wiring harness exclusively for the airbag system is distinguished by corrugated yellow tubing, as
are the connectors.

Do not measure the resistance of the airbag squib.
(It is possible this will deploy the airbag and is very dangerous.)

If the wire harness used in the supplemental restraint system is damaged, replace the whole wire harness
assembly.
When the connector to the airbag front sensors can be repaired alone (when there is no damage to the wire
harness), use the repair wire specially designed for the purpose.
(Refer to the Repair Manual for the applicable Model year for details of the replacement method.)

INFORMATION LABELS (NOTICES) are attached to the periphery of the SRS components. Follow the
instructions on the notices.

260
GROUND POINT* 2 : TMM MADE *
1:TMCMADE
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
J 133J 536 (W/G)
J 233J 733
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
125R/B NO. 1 (LEFT KICK PANEL)
425R/B NO. 4 (RIGHT KICK PANEL)
526R/B NO. 5 (ENGINE COMPARTMENT LEFT)
626R/B NO. 6 (BEHIND GLOVE BOX)
727R/B NO. 7 (NEAR THE BATTERY)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1C
1F20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1G
20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1I20 (*1)ROOF WIRE AND J/B NO. 1 (INSTRUMENT PANEL) TMC MADE1I20 (*2)COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL) TMM MADE
1M20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
2B22ENGINE ROOM MAIN WIRE AND J/B NO 2 (ENGINE COMPARTMENT LEFT)2E22ENGINE ROOM MAIN WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
2F22COWL WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
3A
3B24COWL WIRE AND J/B NO 3 (BEHIND COMBINATION METER)3C24COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
3D
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EA138 (1MZ±FE)ENGINE ROOM MAIN WIRE AND ENGINE ROOM NO. 3 WIRE
EB138 (1MZ±FE)ENGINE ROOM MAIN WIRE AND RELAY WIREEB140 (5S±FE)ENGINE ROOM MAIN WIRE AND RELAY WIRE
IH242FRONT DOOR LH WIRE AND INSTRUMENT PANEL WIRE
IJ142FLOOR NO. 1 WIRE AND COWL WIRE
IK142COWL WIRE AND A/C SUB WIRE
IL142COWL WIRE AND SERVO MOTOR SUB WIRE
IM242INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE
IO142FLOOR NO. 1 WIRE AND SEAT WIRE
IP344ENGINE WIRE AND COWL WIRE
IQ144ENGINE WIRE AND INSTRUMENT PANEL WIRE
IT144FRONT DOOR RH WIRE AND INSTRUMENT PANEL WIRE
IV144ROOF WIRE AND COWL WIRE
IV244ROOF WIRE AND COWL WIRE MADE IN USA
46 (S/D)
BX148 (C/P)FUEL GAUGE WIRE AND FLOOR NO. 1 WIREBX1
50 (W/G)
FUEL GAUGE WIRE AND FLOOR NO. 1 WIRE
BZ146 (S/D)LUGGAGE ROOM NO 1 WIRE AND FLOOR NO 1 WIREBZ148 (C/P)LUGGAGE ROOM NO. 1 WIRE AND FLOOR NO. 1 WIRE
Ba146 (S/D)FLOOR NO 1 WIRE AND LUGGAGE ROOM NO 2 WIREBa148 (C/P)FLOOR NO. 1 WIRE AND LUGGAGE ROOM NO. 2 WIRE
Bb150 (W/G)LUGGAGE ROOM NO. 1 WIRE AND FLOOR NO. 1 WIRE
Bc150 (W/G)BACK DOOR NO. 1 WIRE AND FLOOR NO. 1 WIRE
Bd350 (W/G)BACK DOOR NO. 1 WIRE AND BACK DOOR NO. 2 WIRE

OVERALL ELECTRICAL WIRING DIAGRAM
1
234
1 CAMRY ELECTRICAL WIRING DIAGRAM
4ACC
IG1
ST1
IG2
ST2 AM1
7
9 10 AM2
2 2
1
5
1C 113C 6 2G 1
1G 912H 2
3C1A 14
1E 11
2C 2F
3C 182C
3EF117 IP11EF1 16 IP11A 6
1A
1
B1M 11G 8
3D 2
B±R B± O B±W W
W± R
B± RBB±W B± R
WW
B±W B±W
B±R B±R
W± B W± B
W±BB±WB
W± R W±B
IG
B±W
I12
IGNITION SW10A
START ER 40A
AM130A
AM2
FL MAI N
2. 0L
BATTERYIGNITER
To Circuit Opening
Relay< 3±2>
40A
MA I N
1
BBLACK
STARTER
B100A ALT
B±O
Instr ument panel
br ace LHB
EC 2 1
Intake
manifold
RH
W± B
B±O 5
6
W± R
P
N 61GB±W
(
A/ T)Fr om Diode
(
f or Cruis e Contr ol)
< 24±1>
B2
3B 201
3
251
B±W
51E
1A2 1
I16
IGNI TION COI L NO. 1
I21
IGNI TION COI L NO. 6
2 1
I20
IGNI TION COI L NO. 52 1
6A
I19
IGNI TION COI L NO. 42 1
5A
I18
IGNI TION COI L NO. 32 1
4A
I17
IGNI TION COI L NO. 22 1
3A 7A
1B 2B 3B 4B 5B 6B 8B 8A 7B2A
L
R±BL±B GR ± BY±R W± G
B± O B
IGT6 IGT5 IGT4 IGT3 IGT2 IGT1 IGF TACH GN DCOI L 6 COI L 5 COIL4 COI L3 COIL2 COI L1 +BG±R PLG±BG W GR W± R
B± O
B± O
B± O
B± O
B± O
B±OB±O B±O B±O B± O
To Injector
<3±2>
B±O
Starting and Ignition(
1MZ±FE)
Power Source
ST ARTERIGNITER
8 7 6 5 4 3 2 1
1 2 3 45678
ABLACKADARKGRAY
STARTER
RELAY
P1
PARK/ NEUTRAL POSI TI ON SW
(
NEUTRAL START SW)
(
A/T)
FUSE BOX
To Bulb Check Relay
To Engine Cont rol Module
(
Engine and Elect ronic
Co nt r ol le d
To Data Link Connec tor 1
(
Check Connec tor)
<3±3>
To Engine Contr ol Module
(
Engine and Elec tronic
Controlled Transmission
ECU)
<3±7>
B± O B± O 5
4
1A
1BF1 0 A , F16 B
1 S3 S4
S3 A , S4 BI2 A ,I15 BI2
I15
N1
NOISE
FILTER
(
for Ignit ion
System)
1 A F10
B F1 6 FUSE BOX
W±R Tra nsmi ss i on ECU) [COMB. METER]