1999 TOYOTA CAMRY ignition

SRS
The SRS is a driver and front passenger protection device which has a supplemental role to the seat belts.
When the ignition SW is turned to ACC or ON, current from the CIG fuse flows to TERMINAL (B) 6 of the center airbag
sensor assembly. Only when the ignition SW is on does the current flow from the IGN fuse to TERMINAL (B) 5 of the center
airbag sensor assembly.
If an accident occurs while driving, when the frontal impact exceeds a set level, current from the CIG or IGN fuse flows to
TERMINALS (B) 14, (B) 10, (A) 2 and (C) 5 of the center airbag sensor assembly to TERMINAL 1 of the airbag squibs and
the pretensioners to TERMINAL 2 to TERMINALS (B) 13, (B) 11, (A) 1 and (C) 6 of the center airbag sensor assembly to
TERMINAL (B) 27, (B) 28 or BODY GROUND to GROUND, so that current flows to the front airbag squibs and the
pretensioners and causes them to operate.
The airbag stored inside the steering wheel pad is instantaneously expanded to soften the shock to the driver.
The airbag stored inside the passenger's instrument panel is instantaneously expanded to soften the shock to the front
passenger.
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A928C1130J7B31
A1028D128J831
A1630D230J931
A1730D330J2031
C4A30E730P1333
C5B30J231P1433
C6C30J6A31
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1G22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J
1N22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1V22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1W
2J24Cowl Wire and Engine Room J/B No.2 (Engine Compartment Left)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IA136Cowl Wire and Cowl Wire (Left Kick Panel)
IE236Instrument Panel Wire and Cowl Wire (Lower Finish Panel)
IG138Engine Wire and Cowl Wire (Under the Blower Motor)IG338Engine Wire and Cowl Wire (Under the Blower Motor)
II138Engine Room Main Wire and Cowl Wire (Cowl Side Panel RH)
: GROUND POINTS
CodeSee PageGround Points Location
EC34Intake Manifold
ID36Cowl Side Panel LH
IF36Instrument Panel Brace LH
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
I138Cowl Wire
SYSTEM OUTLINE

When the ignition SW is turned to ACC position the current from the CIG fuse flows to TERMINAL 1 of the shift lock ECU, in
the ON position, the current from the ECU±IG fuse flows to TERMINAL 3 of the ECU.
1. SHIFT LOCK MECHANISM
With the ignition SW on, when a signal that the brake pedal is depressed (Stop light SW on) and a signal that the shift lever
is put in P position (Continuity between P1 and P of the shift lock control SW) is input to the shift lock ECU, the ECU
operates and current flows from TERMINAL 3 of the ECU to TERMINAL SLS+ of the shift lock solenoid to solenoid to
TERMINAL SLS± to TERMINAL 5 of the ECU to GROUND. This causes the shift lock solenoid to turn on (Plate stopper
disengages) and the shift lever can shift into position other than the P.
2. KEY INTERLOCK MECHANISM
With the ignition SW ON or ACC position, when the shift lever is put in P position (No continuity between P2 and P of shift
lock control SW), the current flowing from TERMINAL 4 of the shift lock ECU to the key interlock solenoid is cut off. This
causes the key interlock solenoid to turn off (Lock lever disengages from LOCK position) and the ignition key can be turned
from ACC to LOCK position.
S3 SHIFT LOCK ECU
1±GROUND : Approx. 12 volts with the ignition SW at ACC or ON position
3±GROUND : Approx. 12 volts with the ignition SW at ON or ST position
5±GROUND : Always continuity
6±GROUND : Approx. 12 volts with the brake pedal depressed
S4 STOP LIGHT SW
2±1 : Closed with the brake pedal depressed
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
J431J931S331
J531J1631S431
J631K131
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1C22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1D22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1R22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1T22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IE136Instrument Panel Wire and Cowl Wire (Lower Finish Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IE36Left Kick Panel
IF36Instrument Panel Brace LH
SYSTEM OUTLINE
SERVICE HINTS

C7 CIGARETTE LIGHTER
2±GROUND : Approx. 12 volts with the ignition SW at ACC or ON position
1±GROUND : Always continuity
C9 CLOCK
4±GROUND : Approx. 12 volts with the ignition SW at ACC or ON position
1±GROUND : Always approx. 12 volts
2±GROUND : Always continuity
3±GROUND : Approx. 12 volts with the light control SW at TAIL or HEAD position
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
C730J531J28A31
C930J931J29B31
D530J16A31
J431J17B31
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1T22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1W22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2J24Cowl Wire and Engine Room J/B No.2 (Engine Compartment Left)
: GROUND POINTS
CodeSee PageGround Points Location
IE36Left Kick Panel
IF36Instrument Panel Brace LH
SERVICE HINTS

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 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 relay and the current flowing through the warning light flows from TERMINAL 9 of the relay to TERMINAL 10 to
GROUND, causing the warning light to light up. A buckle SW off signal is input to TERMINAL 8 of the relay to TERMINAL 10
to GROUND, causing the warning light to light 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 to GROUND and the seat belt warning buzzer sounds for
approx. 6 seconds. However, if the 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 to TERMINAL 10 to GROUND is cut,
causing the buzzer to stop.
2. KEY REMINDER SYSTEM
With the ignition key inserted in the key cylinder (Unlock warning SW on), the ignition SW still off and driver's door open
(Door courtesy SW on), when a signal is input to TERMINAL 6 of the integration relay, the relay operates, current flows from
TERMINAL 1 of the relay to TERMINAL 10 to GROUND and key reminder buzzer sounds.
B5 BUCKLE SW LH
1±2 : Closed with driver's seat belt in use
D7 DOOR COURTESY SW FRONT LH
1±GROUND : Closed with front LH door open
U1 UNLOCK WARNING SW
1±2 : Closed with ignition key in cylinder
I12 (A) INTEGRATION RELAY
10±GROUND : Always continuity
6±GROUND : Continuity with the front LH door open
5±GROUND : Continuity with the ignition key in cylinder
8±GROUND : Continuity with the driver's seat belt in use
1±GROUND : Always approx. 12 volts
(A)13±GROUND : Always approx. 12 volts
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
B532I12A30J32B31
C10A30J331J3432
C12C30J931U131
D732J31A31
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1M22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1S22Floor Wire and Instrument Panel J/B (Lower Finish Panel)
1T22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1W22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2J24Cowl Wire and Engine Room J/B No.2 (Engine Compartment Left)
: GROUND POINTS
CodeSee PageGround Points Location
IF36Instrument Panel Brace LH
BK40Under the Left Center Pillar
SYSTEM OUTLINE
SERVICE HINTS

P4 POWER OUTLET
2±GROUND : Approx. 12 volts with the ignition SW at ACC or ON position
1±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
P431
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1J22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1V22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
: GROUND POINTS
CodeSee PageGround Points Location
ID36Cowl Side Panel LH
SERVICE HINTS

R5 REMOTE CONTROL MIRROR SW
9±GROUND : Approx. 12 volts with the ignition SW at ACC or ON position
6±10 : Continuity with the operation SW at UP or LEFT position
9±6 : Continuity with the operation SW at DOWN or RIGHT position
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
J331R531R14A33
J431R13A33R14B33
J531R13B33
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1T22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
ID136Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IL138Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IE36Left Kick Panel
SERVICE HINTS

DEFOGGER RELAY
5±3 : Closed with the ignition SW at ON or ST position and the rear window defogger SW on
R4 REAR WINDOW DEFOGGER SW
4±GROUND : Approx. 12 volts with the ignition SW at ON or ST position
3±GROUND : Always continuity
R13, R14 MIRROR HEATER LH, RH [REMOTE CONTROL MIRROR LH, RH]
1±GROUND : Approx. 12 volts with the rear window defogger SW on
5±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
J931J3532R1333
J3031N233R1433
J3332R431
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J
1L22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1R
()
1T22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1V22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IB136Floor Wire and Cowl Wire (Left Kick Panel)
ID136Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IL138Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
ID36Cowl Side Panel LH
IF36Instrument Panel Brace LH
II36Right Kick Panel
SERVICE HINTS

R3 (A) RADIO AND PLAYER
(A) 4±GROUND : Always approx. 12 volts
(A) 3±GROUND : Approx. 12 volts with the ignition SW at ACC or ON position
(A) 7±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
F1532R2B31R1233
F1632R3A31
J1631R1133
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1G22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H22Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1W22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2K24Cowl Wire and Engine Room J/B No.2 (Engine Compartment Left)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IC136Floor Wire and Instrument Panel Wire (Left Kick Panel)
ID136Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IL138Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IG36Instrument Panel Brace RH
SERVICE HINTS