Toyota AVENSIS 2000 Supplement Manual page 231

DI–100
DTC P1520
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling, while driving in lock–up condition, when
brakes are suddenly applied.
When the brake pedal is operated, this switch sends a signals to Engine and ECT ECU. Then the Engine
and ECT ECU cancels operation of the lock–up clutch while braking is in progress.
DTC No.
No stop light switch signal to Engine and ECT ECU during
P1520 driving.
(2–trip detection logic)
WIRING DIAGRAM
Sedan:
Instrument Panel J/B
1
5
W–R *
IA
6
W *
1 F17
FL
Block
ALT
1 F15
B–G
FL
MAIN
Battery
AVENSIS/CORONA SUP (RM781E)
DIAGNOSTICS
Stop Light Switch Signal Malfunction
DTC Detecting Condition
STOP
10
W
IG
G–W
*1 *1
F F
D D
*2 *2
High
Mounted
G–W
1 2
Stop
Stop
Light
Light RH
2 4
W–B
A
*4
J/C
A
*3
W–B
– AUTOMATIC TRANSAXLE (U240E)
S Open or short in stop light switch circuit
S Stop light switch
S Engine and ECT ECU
Stop Light
Switch
G–W
2 1
6 5
G–W
ID1 II1
5 6
* *
J/C
G–W
6
Stop Light
LH
4
W–B
A A
*4 *4
A
*3
W–B
5
BL *
6
BN *
Trouble Area
Center J/B
21
8
G–W
3F 3D
8 3C
G–W
*1: J12 (LHD), J28 (RHD)
*2: J13 (LHD), J29 (RHD)
*3: J10 (LHD), J30 (RHD)
*4: J11 (LHD), J31 (RHD)
W–B
*5: LHD
*6: RHD
BM
DI80H–01
Engine and
ECT ECU
22
STP
E13
F13602