Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 2011n cip0724
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05-582 DIAGNOSTICS - ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] 05BUK-02
DTC P0724 BRAKE SWITCH "B" CIRCUIT HIGH
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 depressed, this switch sends a signals to the ECM. Then the ECM cancels the op-
eration of the lock-up clutch while braking is in progress.
DTC No. DTC Detecting Condition Trouble Area
The stop light switch remains ON even when the vehicle is S Short in stop light switch signal circuit
P0724 driven in a GO (30 km/h) and STOP (3 km/h) fashion 5 times. S Stop light switch
(2-trip detection logic). S ECM
MONITOR DESCRIPTION
This DTC indicates that the stop light switch remains on. When the stop light switch remains ON during "stop
and go" driving, the ECM interprets this as a fault in the stop light switch and the MIL comes on and the ECM
stores the DTC. The vehicle must stop (less than 3 km/h (2 mph)) and go (30 km/h (19 mph) or more) 5 times
for two driving cycles in order to detect malfunction.
MONITOR STRATEGY
Related DTCs P0724: Stop light switch/Rationality
Required sensors/Components Stop light switch, Vehicle speed sensor
Frequency of operation Continuous
Duration GO and STOP 5 times
MIL operation 2 driving cycles
Sequence of operation None
TYPICAL ENABLING CONDITIONS
The monitor will run whenever this DTC is not present. See page 05-9
Battery voltage 8 V or more
Ignition switch ON
Starter OFF
GO (Vehicle speed is 30 km/h (18.63 mph) or more) Once
STOP (Vehicle speed is less than 3 km/h (1.86 mph)) Once
TYPICAL MALFUNCTION THRESHOLDS
Brake switch Remain ON during GO and STOP 5 times
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 765
DIAGNOSTICS - ELECTRONIC CONTROLLED AUTOMATIC 05-583
TRANSAXLE [ECT]
WIRING DIAGRAM
S12
J2 ECM
Stop Light SW
J/C 20 J/C 3 19
W (*2) G-W G-W G-W
J3 J4 E5 STP
W (*1) 2 1 A A
J15 Driver Side J/B
J/C 16 STOP 1
W (*1) W (*1) W
1C 1A
C C
W (*2)
FL Block
1 1
W W
F6 F7
ALT
FL MAIN
Battery *1: w/ Dynamic Laser Cruise Control
*2: Except *1
G39666
INSPECTION PROCEDURE
HINT:
According to the DATA LIST displayed by the OBD II scan tool or hand-held tester, you can read the value
of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of
troubleshooting is one method to shorten labor time.
(a) Turn the ignition switch off.
(b) Connect the OBD II scan tool or hand-held tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Push the "ON" button of the OBD II scan tool or the hand-held tester.
(e) When you use hand-held tester:
Select the item "DIAGNOSIS/ENHANCED OBD II/DATA LIST".
(f) According to the display on tester, read the "DATA LIST".
Measurement Item/
Item Normal Condition
Range (display)
Stop light SW Status/ S Brake Pedal is depressed: ON
STOP LIGHT SW
ON or OFF S Brake Pedal is released: OFF
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 766
05-584 DIAGNOSTICS - ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]
1 INSPECT STOP LAMP SWITCH ASSY(See page 65-4 )
NG REPLACE STOP LAMP SWITCH ASSY
OK
2 CHECK HARNESS AND CONNECTOR(STOP LAMP SWITCH ASSY - ECM)
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR(See page 01-37 )
OK
REPAIR OR REPLACE ECM(See page 01-37 )
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 767
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