Toyota COROLLA2004 Electrical Wiring Diagram page 173

System Outline
Current is always applied from the DOME fuse to TERMINAL 5 of the combination meter. When the ignition SW is turned to
ON position, the current from the GAUGE fuse flows to TERMINAL 4 of the combination meter and flows TERMINAL 1 of the
front passenger seat belt warning light.
Seat Belt Warning System
When the ignition SW turned on, a signal is input to the combination meter. To determine whether the driver has fastened the
seat belt, a signal is input from the buckle SW LH to TERMINAL 12 of the combination meter. When the seat belt is not
fastened, the seat belt warning light in the combination meter blinks, and emits a warning sound.
In addition, the front passenger is recognized by a sensor (Occupant detection sensor) is installed in the front passenger
seat, and determines whether the seat belt is fastened. When not fastened, the signals from the occupant detection sensor
is input to TERMINAL 11 of the combination meter, and the front passenger seat belt warning light blinks.
Service Hints
B6 Buckle SW LH
3–1 : Open with the driver's seat belt in use
C9 Combination Meter
5–Ground : Always approx. 12 volts
4–Ground : Approx. 12 volts with the ignition SW at ON position
1–Ground : Always continuity
: Parts Location
Code See Page
B6 34
B7 34
C9 34
: Relay Blocks
Code See Page
1 22
: Junction Block and Wire Harness Connector
Code See Page
IC 25
IG 25
IL 24
3A
28 28
3B
4B
30 30
4C
: Connector Joining Wire Harness and Wire Harness
Code See Page
IG1 42
II2 42
: Ground Points
Code See Page
EB 38
IE 40
IG 40
Code
F7
J3
J6
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
Instrument Panel Wire and Center J/B (Behind the Combination Meter) Instrument Panel Wire and Center J/B (Behind the Combination Meter)
Joining Wire Harness and Wire Harness (Connector Location)
Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever)
Engine Wire and Instrument Panel Wire (Blower Unit RH)
Ground Points Location
Left Side of the Cylinder Head
Behind the Combination Meter
Right Kick Panel
2004 COROLLA (EWD533U)
See Page
35
35
35
Code See Page
J7 35
173