1994 TOYOTA CAMRY system

168
MOON ROOF*1 : S/D TMC MADE
*
2 : S/D TMM MADE, W/G
5236 123712 89 5 4
4 4213
R W±B
W±B
R±Y
R±W
P
G±Y G±W
R±L
G
R
DOWN
CLOSE OPEN UPNO. 1
NO. 2
MOON ROOF CONTROL RELAY
MOON ROOF
CONTROL SW 11 TIMERBUZZER
TIMER S
RQ
Q
R
S 612
W±B
W±BTIMER
IG II2 5II2 4
C C
R±L R±L R±L
R W±B
W±B W±B
L
J UNCTION
CONNECTOR
MOON ROOF
LIMIT SWMOON ROOF
MOTOR M2
J3
M3 M5 M4
L
IV1 1
IV2 1
R R
(
*2) (
*2)(
*1)
(
W/G)
(
S/D, C/P)
IV 1 5
IV 2 5
(
*2)
(
*2)
L
(
*1)(
W/G)
(
S/D,
C/P)
M
B5:S/D
B32 : W/G
B21 : C/P
B4:S/D
B31 : W/G
B21 : C/P
BK:S/D,C/P
BP : W/G 1
15II2 10
W±L W±L
8 L±R
R±LDOOR LOCK
CONTROL RELAY D8
IG
RLY+B
1K 82G 2 30A
POWER 10A
GAUGE20A
DOME
1
1K 2
1C 1
1I 1
1L 6
1M 11I5POWER
MAIN
RE LAY
23 1
5
FROM POWER SOURCE SYSTEM(
SEE PAGE 64)

169
CURRENT IS APPLIED AT ALL TIMES THROUGH POWER FUSE TO TERMINAL 5 OF POWER MAIN RELAY AND ALSO THROUGH DOME
FUSE TO TERMINAL 12 OF MOON ROOF CONTROL RELAY.
WITH THE IGNITION SW TURNED ON, THE CURRENT FLOWS FROM TERMINAL 1 OF POWER MAIN RELAY " TERMINAL 2 " TO
GROUND THROUGH GAUGE FUSE. AS A RESULT, POWER MAIN RELAY IS ACTIVATED AND THE CURRENT TO TERMINAL 5 OF
POWER MAIN RELAY FLOWS FROM TERMINAL 3 OF RELAY TO TERMINAL 6 OF MOON ROOF CONTROL RELAY.
1. SLIDE OPEN OPERATION
WHEN THE IGNITION SW IS TURNED ON AND THE MOON ROOF CONTROL SW IS PUSHED TO THE OPEN POSITION, A SIGNAL IS
INPUT FROM TERMINAL 3 OF MOON ROOF CONTROL SW TO TERMINAL 1 OF MOON ROOF CONTROL RELAY. MOON ROOF LIMIT SW
NO. 2 ON AT THIS TIME.
WHEN THIS OCCURS, THE RELAY IS ACTIVATED AND THE CURRENT TO TERMINAL 6 OF MOON ROOF CONTROL RELAY FLOWS
FROM TERMINAL 5 " TERMINAL 1 OF MOON ROOF MOTOR " TERMINAL 3 " TERMINAL 4 OF MOON ROOF CONTROL RELAY "
TERMINAL 11 " TO GROUND AND ROTATES THE MOTOR TO OPEN THE MOON ROOF WHILE THE SW IS BEING PUSHED TO OPEN
POSITION.
2. SLIDE CLOSE OPERATION
WITH THE IGNITION SW TURNED ON, THE MOON ROOF COMPLETELY OPEN AND MOON ROOF LIMIT SW NO. 1 AND NO. 2 BOTH ON,
WHEN THE MOON ROOF CONTROL SW IS PUSHED TO THE CLOSE POSITION A SIGNAL IS INPUT FROM TERMINAL 6 OF MOON
ROOF CONTROL SW TO TERMINAL 2 OF MOON ROOF CONTROL RELAY.
WHEN THIS OCCURS, THE RELAY IS ACTIVATED AND THE CURRENT TO TERMINAL 6 OF MOON ROOF CONTROL RELAY FLOWS
FROM TERMINAL 4 " TERMINAL 3 OF MOON ROOF MOTOR " TERMINAL 1 " TERMINAL 5 OF MOON ROOF CONTROL RELAY "
TERMINAL 11 " TO GROUND AND ROTATES THE MOTOR TO CLOSE THE MOON ROOF WHILE THE SW IS BEING PUSHED TO CLOSE
POSITION.
MOON ROOF LIMIT SW NO. 1 TURNS OFF (LIMIT SW NO. 2 IS ON) AND A 100 MM BEFORE FULLY CLOSE POSITION, SIGNAL IS INPUT
FROM TERMINAL 1 OF LIMIT SW NO. 1 TO TERMINAL 8 OF MOON ROOF CONTROL RELAY. THIS SIGNAL ACTIVATES THE RELAY AND
STOPS CONTINUITY FROM TERMINAL 6 OF MOON ROOF CONTROL RELAY TO TERMINAL 11. AS A RESULT, THE MOON ROOF
STOPS AT THIS POSITION.
TO CLOSE THE MOON ROOF COMPLETELY, PUSHING THE MOON ROOF CONTROL SW AGAIN TO THE CLOSE SIDE CAUSES A
SIGNAL TO BE INPUT AGAIN TO TERMINAL 2 OF MOON ROOF CONTROL RELAY. THIS ACTIVATES THE RELAY AND THE MOON ROOF
WILL CLOSE AS LONG AS THE MOON ROOF CONTROL SW IS BEING PUSHED, ALLOWING THE MOON ROOF TO FULLY CLOSE.
3. TILT UP OPERATION
WHEN THE MOON ROOF CONTROL SW IS PUSHED TO TILT UP POSITION, WITH THE IGNITION SW TURNED ON AND THE MOON
ROOF COMPLETELY CLOSED (MOON ROOF LIMIT SW NO. 2 IS OFF), A SIGNAL IS INPUT FROM TERMINAL 5 OF MOON ROOF
CONTROL SW TO TERMINAL 3 OF MOON ROOF CONTROL RELAY. AS A RESULT, THE RELAY IS ACTIVATED AND THE CURRENT TO
TERMINAL 6 OF RELAY FLOWS FROM TERMINAL 4 OF RELAY " TERMINAL 3 OF MOON ROOF MOTOR " TERMINAL 1 " TERMINAL
5 OF RELAY " TERMINAL 11 TO GROUND AND ROTATES THE MOTOR SO THAT TILT UP OPERATION OCCURS AS LONG AS THE
MOON ROOF CONTROL SW IS PUSHED ON THE TILT UP SIDE.
4. TILT DOWN OPERATION
WHEN THE MOON ROOF CONTROL SW IS PUSHED TO TILT DOWN POSITION, WITH THE IGNITION SW TURNED ON AND THE MOON
ROOF TILTED UP (NO. 1 AND NO. 2 MOON ROOF LIMIT SWITCHES ARE BOTH OFF), A SIGNAL IS INPUT FROM TERMINAL 2 OF MOON
ROOF CONTROL SW TO TERMINAL 7 OF MOON ROOF CONTROL RELAY.
AS A RESULT, THE RELAY IS ACTIVATED AND THE CURRENT TO TERMINAL 6 OF RELAY FLOWS FROM TERMINAL 5 OF RELAY "
TERMINAL 1 OF MOON ROOF MOTOR " TERMINAL 3 " TERMINAL 4 OF RELAY " TERMINAL 11 " TO GROUND AND ROTATES THE
MOTOR SO THAT TILT DOWN OPERATION OCCURS AS LONG AS THE MOON ROOF CONTROL SW IS PUSHED ON THE TILT DOWN
SIDE. (DURING TILT DOWN, LIMIT SW NO. 1 IS CHANGED OFF TO ON.)
5. TILT UP REMINDER SYSTEM
WHEN THE IGNITION SW IS TURNED FROM ON TO ACC OR OFF WITH THE MOON ROOF STILL TILTED UP THE CURRENT DOES NOT
FLOW TO TERMINAL 6 OF MOON ROOF CONTROL RELAY.
THIS IS RECEIVED BY THE RELAY AS A SIGNAL THAT THE IGNITION SW IS TURNED OFF. AT THIS TIME, MOON ROOF LIMIT SW NO.1
AND NO. 2 ARE OFF, SO SIGNALS ARE INPUT TO TERMINALS 8 AND 9 OF MOON ROOF CONTROL RELAY THAT THE MOON ROOF IS
IN THE TILT OPERATION POSITION. WHEN THESE SIGNALS ARE INPUT TO THE MOON ROOF CONTROL RELAY, THE TIMER BUILT
INTO THE RELAY OPERATES.
THUS THE CURRENT TO TERMINAL 12 OF MOON ROOF CONTROL RELAY FLOWS THROUGH BUZZER OF MOON ROOF CONTROL
RELAY AND TERMINAL 11 OF MOON ROOF CONTROL RELAY TO GROUND AND THE BUZZER SOUNDS ABOUT 8 TIMES TO NOTIFY
THAT THE MOON ROOF IS STILL IN THE TILT UP CONDITION.
SYSTEM OUTLINE

170
UNLOCK AND SEAT BELT WARNING
5 1
1
2 1
1 2 2G 2
IO1 5IO1 2 CC
6
7
IGBL
R±W
R R±L W± B
R±G
R±Y R±Y
R±Y W±B W±B
W±B W±B
R±L R±LFROM POWER SOURCE SYSTEM(
SEE PAGE 64)
20A
DOME
SEAT BELT
WARNING LIGHT
[COMB. METER]JUNCTION
CONNECTOR
UNLOCK
WARNING SW
[IGNITION SW]
DOOR COURTESY
SW FRONT LHBUCKLE
SWBUCKLE
SW J1
C9
I12
D12 B 7 B 8
(
W/ POWER SEAT)
(
W/O POWER SEAT) W±B
C C
C
JUNCTION
CONNECTOR J5
W± B
(
S/D, C/P)
W±B
(
S/D, C/P)(
W/G) (
W/ G)
1B6
1C 7
1G 21H21H51C 1
TIMERBUZZER 97110A
GAUGE
INTEGRATION RELAY
10 5 6 8
1M 11G 4

171
CURRENT ALWAYS FLOWS TO TERMINAL 1 OF THE INTEGRATION RELAY THROUGH THE DOME FUSE.
1. SEAT BELT WARNING SYSTEM
WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS FROM THE GAUGE FUSE TO THE TERMINAL 7 OF THE INTEGRATION
RELAY AT THE SAME TIME, CURRENT FLOWS TO TERMINAL 9 OF THE RELAY FROM THE GAUGE FUSE THROUGH THE SEAT BELT
WARNING LIGHT. THIS CURRENT ACTIVATES THE SEAT BELT WARNING RELAY AND, CURRENT FLOWING THROUGH THE WARNING
LIGHT FLOWS FROM TERMINAL 9 OF THE RELAY" TERMINAL 10 " GROUND, CAUSING THE WARNING LIGHT TO LIGHT UP. AT THE
SAME AS THE WARNING LIGHT LIGHTS UP. A BUCKLE SW OFF SIGNAL IS INPUT TO TERMINAL 8 OF THE RELAY, THE CURRENT
FLOWING TO TERMINAL 1 OF THE RELAY FLOWS FROM TERMINAL 10 " GROUND AND THE SEAT BELT WARNING BUZZER SOUNDS
FOR APPROX. 4±8 SECONDS. HOWEVER, IF SEAT BELT IS PUT ON DURING THIS PERIOD (WHILE THE BUZZER IS SOUNDING),
SIGNAL INPUT TO TERMINAL 8 OF THE RELAY STOPS AND THE CURRENT FLOW FROM TERMINAL 1 OF THE RELAY " TERMINAL 10
" GROUND IS CUT, CAUSING THE BUZZER TO STOP.
2. UNLOCK WARNING SYSTEM
WITH THE IGNITION KEY INSERTED IN THE KEY CYLINDER (UNLOCK WARNING SW ON), THE IGNITION SW STILL OFF AND DOOR
OPEN (DOOR COURTESY SW ON), WHEN A SIGNAL IS INPUT TERMINAL 5 AND 6 OF THE RELAY, THE INTEGRATION RELAY
OPERATES, CURRENT FLOWS FROM TERMINAL 1 OF THE RELAY " TERMINAL 10 " GROUND AND THE UNLOCK WARNING
BUZZER SOUNDS.
B 7, B 8 BUCKLE SW
1±2 : CLOSED WITH DRIVR'S LAP BELT IN USE
D12 DOOR COURTESY SW FRONT LH
1±GROUND : CLOSED WITH FRONT LH DOOR OPEN
INTEGRATION RELAY
10±GROUND : ALWAYS CONTINUITY
6±GROUND : CONTINUITY WITH FRONT LH DOOR OPEN
5±GROUND : CONTINUITY WITH IGNITION KEY IN CYLINDER
8±GROUND : CONTINUITY UNLESS DRIVER'S LAP BELT IN USE
9±GROUND :0 VOLTS WITH IGNITION SW ON AND BUCKLE SW OFF
1±GROUND : ALWAYS APPROX. 12 VOLTS
7±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
I12 UNLOCK WARNING SW [IGNITION SW]
1±5 : CLOSED WITH IGNITION KEY IN CYLINDER
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
B 732D1234 (S/D), 35 (C/P), 36 (W/G)J 536 (W/G)
B 832I1233
C 932J 133
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B
1C20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1G
20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1H20FLOOR NO. 1 WIRE J/B NO. 1 (INSTRUMENT PANEL LEFT)
1M20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
2E22ENGINE ROOM MAIN WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IO142FLOOR NO. 1 WIRE AND SEAT WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IG42INSTRUMENT PANEL BRACE LH
46 (S/D)
BL48 (C/P)UNDER THE LEFT QUARTER PILLARBL
50 (W/G)
UNDER THE LEFT QUARTER PILLAR
SYSTEM OUTLINE
SERVICE HINTS

173
HORN
10
11
G±B
G±W
G±W FROM POWER SOURCE SYSTEM(
SEE PAGE 64)
HORN SW
[COMB. SW]
HORN
LHHORN
RH C12
H5 H6
2G 52A3 10A
HORN
HORN
RELAY
13 2
HORN RELAY
2±3 : CLOSED WITH HORN SW ON
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C1232H 528 (1MZ±FE), 30 (5S±FE)H 628 (1MZ±FE), 30 (5S±FE)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
2A22ENGINE ROOM MAIN WIRE AND J/B NO 2 (ENGINE COMPARTMENT LEFT)2E22ENGINE ROOM MAIN WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
1 BLACK BLACK C12 H 5, H 6
XXX
X
10
SERVICE HINTS

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.

175
The supplemental restraint system has connectors which possess the functions described below:
1. SRS ACTIVATION PREVENTION MECHANISM
Each connector contains a short spring plate. When the
connector is disconnected, the short spring plate
automatically connects the power source and grounding
terminals of the squib to preclude a potential difference
between the terminals.
2. ELECTRICAL CONNECTION CHECK MECHANISM
This mechanism is designed to electrically check if
connectors are connected correctly and completely.
The electrical connection check mechanism is designed so
that the connection detection pin connects with the
diagnosis terminals when the connector housing lock is in
the locked condition.

176
SRS (SUPPLEMENTAL RESTRAINT SYSTEM)
3. CONNECTOR TWIN±LOCK MECHANISM
With this mechanism connectors (male and female
connectors) are locked by two locking devices to increase
connection reliability. If the primary lock is incomplete, ribs
interfere and prevent the secondary lock.