Taillight Disconnection Warning - Toyota Camry 1999 Electrical Troubleshooting Manual

TAILLIGHT
SYSTEM OUTLINE
When the light control SW is turned to TAIL or HEAD position. The current flows to TERMINAL 3 of the light failure sensor
through the TAIL fuse.
When the ignition SW is turned on, the current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and
also flows through the rear lights warning light to TERMINAL 4 of the light failure sensor.

TAILLIGHT DISCONNECTION WARNING

With the ignition SW on and the light control SW turned to TAIL or HEAD position, if the taillight circuit is open, the light failure
sensor detects the failure by the change in current flowing from TERMINAL 3 of the light failure sensor to TERMINAL 9, and
the warning circuit of the light failure sensor is activated.
As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear
lights warning light on, which remains on until the light control SW is turned off
SERVICE HINTS
TAILLIGHT RELAY [INSTRUMENT PANEL J/B]
5–3 : Closed with the light control SW at TAIL or HEAD position
L3 LIGHT FAILURE SENSOR
4, 8–GROUND : Approx. 12 volts with the ignition SW at ON position
3–GROUND : Approx. 12 volts with the light control SW at TAIL or HEAD position
11–GROUND : Always continuity
: PARTS LOCATION
Code See Page
C8 A 30
C10 C 30
C13 30
D6 30
26 (1MZ–FE)
F1 F1
28 (5S–FE)
26 (1MZ–FE)
F2 F2
28 (5S–FE)
26 (1MZ–FE)
F4 F4 A A
28 (5S–FE)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
Code See Page
1B
20 20
1C
1D 20
1J 20
1S 20
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
Code See Page
IF2 40
: GROUND POINTS
Code See Page
36 (1MZ–FE)
EB EB
38 (5S–FE)
IG 40
BL 44
BP 44
Code
F9 F9 F F
I17
J2
J4
J7
J11
J12
J35 A
J36 B
Junction Block and Wire Harness (Connector Location)
Cowl Wire and Instrument Panel J/B (Lower Finish Panel) Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
Joining Wire Harness and Wire Harness (Connector Location)
Floor Wire and Instrument Panel Wire (Left Kick Panel)
Ground Points Location
Left Radiator Side Support Left Radiator Side Support
Instrument Panel Brace LH
Under the Left Center Pillar
Back Panel Center
See Page
26 (1MZ–FE)
28 (5S–FE)
30
31
31
31
31
31
31
31
Code See Page
J40 32
L1 32
L2 32
L3 32
R8 33
L9 33
R10 33
R11 33