Toyota Camry Manual page 1390

DTC P1520
CIRCUIT DESCRIPTION
This signal is used to detect when the brakes have been applied. The STP signal voltage is the same as
the voltage supplied to the stop lights.
The STP signal is used mainly to control the fuel cut–off engine speed (The fuel cut–off engine speed is re-
duced slightly when the vehicle is braking.).
DTC No.
Stop light switch does not turn off when repeating the driving at
P1520 30 km or more 10 times or more after depressing brake
(2 trip detection logic)
WIRING DIAGRAM
Instrument Panel J/B
4
B–R
STOP
1B
F9
1
Fusible
Link
Block
1 F4
B–G
FL
MAIN
Battery
DIAGNOSTICS
Stop Light Switch Signal Malfunction
(Only for A/T)
DTC Detecting Condition
Instrument Panel J/B
Stop Light Switch
7
W G–W
1C
1
2
– ENGINE (1MZ–FE)
D Short in stop light switch signal circuit
D Stop light switch
D ECM
5
4
G–W
1R
1R
2 1S
7
Light
Failure
Sensor
2
To Stop Light
Author :
Trouble Area
Junction
Connector
A 15
C
G–W
STP
J27 E7
J28
Date :
DI–363
DI088–06
ECM
E1
A07449
598