Toyota Tundra (2015 year). Manual — part 1965
TYPICAL MALFUNCTION THRESHOLDS
Brake switch
Stuck ON
CONFIRMATION DRIVING PATTERN
Connect the Techstream to the DLC3.
1.
Turn the ignition switch to ON and turn the Techstream on.
2.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
3.
Turn the ignition switch off and wait for at least 30 seconds.
4.
Turn the ignition switch to ON and turn the Techstream on [A].
5.
Wait 5 seconds.
6.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
7.
Read the Pending DTCs.
HINT:
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
8.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
9.
Input the DTC: P0724.
10.
Check the DTC judgment result.
TESTER
DISPLAY
DESCRIPTION
NORMAL
DTC judgment completed
System normal
ABNORMAL
DTC judgment completed
System abnormal
INCOMPLETE
DTC judgment not completed
Perform driving pattern after confirming DTC enabling conditions
11.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0724; Brake...
TESTER
DISPLAY
DESCRIPTION
N/A
Unable to perform DTC judgment
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE or N/A, perform steps [C] through [E].
Start the engine [C].
12.
Accelerate the vehicle to 30 km/h (18.65 mph) or more, depress the brake pedal and decelerate
the vehicle to 3 km/h (1.86 mph) or less [D]. Repeat step [D] 5 times.
13.
Check the DTC judgment result [E].
14.
If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and
check for permanent DTCs
.
HINT:
If a permanent DTC is output, the system is malfunctioning.
If no permanent DTC is output, the system is normal.
15.
WIRING DIAGRAM
INSPECTION PROCEDURE
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0724; Brake...
OK
HINT:
Using the Techstream to read the Data List allows switch, sensor, actuator and other item values to be
read without removing any parts. Reading the Data List early in troubleshooting is one way to save
time.
NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend
solely on these reference values when deciding whether a part is faulty or not.
Warm up the engine.
1.
Turn the ignition switch off.
2.
Connect the Techstream to the DLC3.
3.
Turn the ignition switch to ON.
4.
Turn the Techstream on.
5.
Enter the following menus: Powertrain / Engine and ECT / Data List.
6.
Follow the instructions on the Techstream and read the Data List.
7.
ITEM
MEASUREMENT ITEM/
RANGE (DISPLAY)
NORMAL CONDITION
DIAGNOSTIC NOTE
Stop Light Switch
Stop light switch status/
ON or OFF
Brake pedal is depressed: ON
Brake pedal is released: OFF
-
PROCEDURE
1.
INSPECT STOP LIGHT SWITCH
(a) Remove the stop light switch.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
TESTER
CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
1 - 2
Pin not pushed
Below 1 Ω
Pin pushed
10 kΩ or higher
3 - 4
Pin not pushed
10 kΩ or higher
Pin pushed
Below 1 Ω
NG
REPLACE STOP LIGHT SWITCH
2.
CHECK HARNESS AND CONNECTOR (ECM - BATTERY)
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0724; Brake...
(a) Disconnect the A24 ECM connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A24-36 (STP) - Body ground
Brake pedal is depressed
11 to 14 V
A24-36 (STP) - Body ground
Brake pedal is released
Below 1 V
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0724; Brake...
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