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.
When the side impact also exceeds a set level, current from the CIG or IGN fuse flows to TERMINALS (A) 5, (C) 2, (A) 2 and
(C) 5 of the center airbag sensor assembly to TERMINAL 1 of the side airbag squibs and the pretensioners to TERMINAL 2
to TERMINALS (A) 6, (C) 1, (A) 1 and (C) 6 of the center airbag sensor assembly to TERMINAL (B) 27, (B) 28 or BODY
GROUND to GROUND, causing side airbag squibs and the pretensioners 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.
Side airbags are instantaneously expanded to soften the shock of side to the driver and front passenger.
The pretensioners make sure of the seat belt restrainability.
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A2230D430P2433
A2330D530P2533
C930J331S733
C17A30J7A31S833
C18B30J8B31S934
C19C30J1131S1034
D126 (1MZ±FE)J2231D128 (5S±FE)J2331
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1G20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J
1N20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1V20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1W
2J22Cowl 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)
IG240Instrument Panel Wire and Cowl Wire (Lower Finish Panel)
II342Engine Wire and Cowl Wire (Under the Blower Motor)
IT142Cowl Wire and Cowl Wire (Left Kick Panel)
IU142Engine Room Main Wire and Cowl Wire (Right Kick Panel)
BV146Floor Wire and Seat No.1 Wire (Under the Driver's Seat)
BW146Floor No.2 Wire and Seat No.2 Wire (Under the Front Passenger's Seat)
: GROUND POINTS
CodeSee PageGround Points Location
EC36 (1MZ±FE)Surge Tank RHEC38 (5S±FE)Intake Manifold
IE40Cowl Side Panel LH
IG40Instrument Panel Brace LH
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 position
5±GROUND : Always continuity
6±GROUND : Approx. 12 volts with the brake pedal depressed
S6 STOP LIGHT SW
2±1 : Closed with the brake pedal depressed
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
J531J1131S331
J631J1631S631
J731K331
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1C20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1D20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1R20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1T20Instrument 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)
IG140Instrument Panel Wire and Cowl Wire (Lower Finish Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IF40Left Kick Panel
IG40Instrument Panel Brace LH
SYSTEM OUTLINE
SERVICE HINTS

C4 CIGARETTE LIGHTER
2±GROUND : Approx. 12 volts with the ignition SW at ACC or ON position
1±GROUND : Always continuity
C6 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
C430J631J30A31
C630J1131J31B31
D1030J16A31
J531J17B31
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1T20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1W20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2J22Cowl Wire and Engine Room J/B No.2 (Engine Compartment Left)
: GROUND POINTS
CodeSee PageGround Points Location
IF40Left Kick Panel
IG40Instrument Panel Brace LH
1
2
1234
12AAA AA
AAAAAAAA
AAAAAA
















EEE
AA
AAAA
AAA AA

























DD D



AAAAAA







C4BLACK BLACK ORANGEJ6
J11
BLACK BLACK GRAY
GRAY
(Hint : See Page 7)(Hint : See Page 7) (Hint : See Page 7) (Hint : See Page 7) (Hint : See Page 7)(Hint : See Page 7)(Hint : See Page 7)
C6 D10 J5
J16 (A) J17 (B) J30 (A)
J31 (B)
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.
B6, B7 BUCKLE SW LH
1±2 : Closed with driver's seat belt in use
D12 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
INTEGRATION RELAY [INSTRUMENT PANEL J/B]
10±GROUND : Always continuity
6±GROUND : Continuity with the driver's 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
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
B632C10C30J1131
B734D1232J4032
C8A30J431U131
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1M20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1S20Floor Wire and Instrument Panel J/B (Lower Finish Panel)
1T20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1W20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2J22Cowl 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)
BQ146Floor Wire and Seat No.1 Wire (Under the Driver's Seat)
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)
1J20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1V20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IE40Cowl Side Panel LH
1
2 ORANGE
P4
SERVICE HINTS

R6 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
J431A33R17B33
J531R16B33R17C33
J631C33
R631R17A33
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1T20Instrument 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)
IE140Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IM142Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IF40Left Kick Panel

AAA AA
AAAAAAAAX X



CCC


XAAAAA


















10 9 8 7 6 5X X
1
321

X
1
2
3 BLACK
(Hint : See Page 7)
(Hint : See Page 7)(Hint : See Page 7) ORANGE
J6 R6
(TMMK Made w/ Mirror Heater) (TMMK Made w/o Mirror Heater) (TMC Made w/ Mirror Heater) (TMC Made w/o Mirror Heater)
J5 J4
R16 (A), R17 (A) R16 (A), R17 (A) R16 (B), R17 (B) R16 (C), R17 (C)

234
1
32
SERVICE HINTS

DEFOGGER RELAY [INSTRUMENT PANEL J/B]
5±3 : Closed with the ignition SW on and the rear window defogger SW on
R5 REAR WINDOW DEFOGGER SW
4±GROUND : Approx. 12 volts with the ignition SW on
3±GROUND : Always continuity
5±GROUND : Continuity with the rear window defogger SW on and approx. 15 minutes thereafter
R16 (A), (B), R17 (A), (B) MIRROR HEATER LH, RH [REMOTE CONTROL MIRROR LH, RH]
(A)1, (B) 6±GROUND : Approx. 12 volts with the rear window defogger SW on
(A)5, (B) 4±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A3430N233R16B33
J1131R531R17A33
J3231R14A33R17B33
J3832R15B33
J3932R16A33
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1J
1L20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1R
()
1T20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1V20Cowl 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)
ID140Floor Wire and Cowl Wire (Left Kick Panel)
IE140Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IM142Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IE40Cowl Side Panel LH
IG40Instrument Panel Brace LH
IJ40Right Kick Panel
BO44Right Quarter Pillar
SERVICE HINTS

A27 AUTO ANTENNA MOTOR AND RELAY
3±GROUND : Always approx. 12 volts
5±GROUND : Approx. 12 volts with the ignition SW at ON position
2±GROUND : Approx. 12 volts with the ignition SW at ACC or ON position
6±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A2732R331S5B31
J16A31R431
J17B31S4A31
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D
1G20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1H
()
1W20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2K22Cowl 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)
IH140Instrument Panel Wire and Instrument Panel No.2 Wire (Instrument Panel Brace RH)
IN142Floor No.2 Wire and Instrument Panel Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IK40Right Kick Panel
BN44Under the Right Center Pillar
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
B644Floor No.2 Wire
X2
34 56AABBCC















8
X








XX 7




X
XX X
AABBCC










2

XX










34



8X

A27BLACK BLACKR3
R4 S4 (A) S5 (B)
(Hint : See Page 7) (Hint : See Page 7)
J16 (A) J17 (B)
SERVICE HINTS