Toyota Corolla 2004 Electrical Wiring Diagram - SRS
SRS
NOTICE: When inspecting or repairing the SRS, 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 SRS are difficult to confirm, so the DTCs become the most important source of information
when troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery.
Work must be started after 90 seconds from when the ignition switch is turned to the ”LOCK” position and the
negative (–) terminal cable is disconnected from the battery.
(The SRS is equipped with a back–up power source so that if work is started within 90 seconds from
disconnecting the negative (–) terminal cable of the battery, the SRS may be deployed.)
When the negative (–) terminal cable is disconnected from the battery, the memory of the clock and audio system will be
canceled. So before starting work, make a record of the contents memorized in the audio memory system. When work is
finished, reset the audio systems as they were before and adjust the clock. This vehicle has power tilt and power
telescopic steering, power seat and power outside rear view mirror which are all equipped with memory function.
However, it is not possible to make a record of the memory contents. So when the work is finished, it will be necessary
to explain this fact tot the customer, and ask the customer to adjust the features and reset the memory. To avoid erasing
the memory in each memory system, never use a back–up power supply from outside the vehicle.
Before repairs, remove the airbag sensor if shocks are likely to be applied to the sensor during repairs.
Do not expose the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner,
airbag sensor assembly, front airbag sensor assembly or side airbag sensor assembly directly to hot air or flames.
Even in cases of a minor collision where the SRS does not deploy, the steering wheel pad, front passenger airbag
assembly, side airbag assembly, seat belt pretensioner, airbag sensor assembly, front airbag sensor assembly and side
airbag sensor assembly should be inspected.
Never use SRS parts from another vehicle. When replacing parts, replace them with new parts.
Never disassemble and repair the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt
pretensioner, airbag sensor assembly, front airbag sensor assembly or side airbag sensor assembly in order to reuse it.
If the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner, airbag sensor
assembly, front airbag sensor assembly or side airbag sensor assembly has been dropped, or if there are cracks, dents
or other defects in the case, bracket or connector, replace them with new ones.
Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting the system’s electrical circuits.
Information labels are attached to the periphery of the SRS components. Follow the instructions on the notices.
After work on the SRS is completed, perform the SRS warning light check.
If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the Repair
Manual.
2004 COROLLA (EWD533U)
159
SRS
56AM2 IG2
ST2
15A
AM2
30A
MAIN
I10
Ignition S W
BB–RB–RB
IM6
IM3
IA42
1
2
1
1A1
B–W
L–W
IG13IG11
Occupant
B
Detection
Sensor
L–W
B
I 6
B
Buckle SW
G–Y
G–Y
B
A12(A), A13(B), A14(C
Airbag Sensor As sembly
C8
RBE+
G–W
VS GND
Seat Positio n
Sensor
)
LBE+LSP–LSP+
A11A4A3
R–B
G
2543423
B–W
L–W
G–Y
160
FL MAIN
2. 0L
Battery
B 7
Buckle SW RH
Occupant
Detection Sensor
1
W–B W–B
2004 COROLLA (EWD533U)
B 6
Buckle SW LH
Seat Position Sensor
1
A
W–BW–BW–B
IG12IG14
3A153A14
3A11
IG
Buckle SW
J 7
Junction
Connector
* 1 : w/ Side Ai rbag
B–W
L–W
G–Y
S 6 S 7
Side Airbag
Squib LH
12 12 1234 1234
)
*1
(
A6A5C1C2
A2A1C5C6
)
*1
(
Y–G
Side Airbag
Squib RH
)
*1
(
Y–R
)
*1
(
Y–G
S10 S11
Side Airbag Se nsor LH Side Airbag Sensor RH
)
*1
(
GR–L
A12 A9A10 A7
A12(A), A13(B), A14(C
Airbag Sensor Assembly
B14 B13 B16 B17
)
*1
(
L–W
)
*1
(
LG–B
)
)
*1
(
P–L
)
*1
GR
(
C7C10 C9C12
B10 B11 B8B7
)
*1
(
L–Y
)
*1
LG
(
B–W
L–W
G–Y
VUPRFS RSSR–ESRVUPLFSLSSL –ESL
)
P
*1
(
VUPRFSRSSR–ESRVUPLFSLSSL–ESLSFR–SFR+SFL–SFL+
P2–P2+P–P+D2–D2+D–D+PR–PR+PL–PL+
Y–B Y–R
P12 P13 A16 A15
Pretensioner LH Pretensioner RH
Y
2121
Y–B
Y
Y–B
1243 1234
D+ D– D2+ D2– P+ P– P2 + P2–
Airbag Squib
(
Steering Wheel Pad
Y
Y–V
)
Y–G
Airbag Squib
(
Front Passenger A ir bag Assembly
2004 COROLLA (EWD533U)
Y–R
Y–G
Y–GR
Y–P
)
161
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