Toyota Tundra. Manual — part 316

2. PERFORM ACTIVE TEST

HINT:

Using the Techstream to perform ACTIVE TESTS allows relays, VSVs, actuators and other items to be
operated without removing any parts. This non-intrusive functional inspection can be very useful because
intermittent operation may be discovered before parts or wiring is disturbed. Performing ACTIVE TESTs
early in troubleshooting is one way to save diagnostic time. DATA LIST information can be displayed
while performing ACTIVE TESTs.

a. Warm up the engine.

b. Turn the ignition switch OFF.

c. Connect the Techstream to the DLC3.

d. Turn the ignition switch ON.

e. Turn the tester on.

f. Enter the following menus:

Techstream - Select: Body / Combination Meter/ Active Test.

g. According to the display on tester, perform the "ACTIVE TEST".

Techstream

COMBINATION METER

DIAGNOSTIC TROUBLE CODE CHART

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of
the code, refer to the "See page" below.

Stop Light SW M-CPU

Stop light switch signal
(Main CPU) / ON or
OFF

ON: Brake pedal
depressed
OFF: Brake pedal
released

-

Throttle Opening Angle Cruise throttle opening

angle / min.: 0°, max.:
125°

Actual demanded
throttle angle

-

# Codes

Number of diagnosis
codes/Min.: 0, Max.:
255

-

-

Tester Display

Test Part

Control Range

Diagnostic Note

Indicat. Lamp Cruise CRUISE main indicator

light operation

OFF or ON

-

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Cruise Control - Tundra

Cruise control system

SYMPTOM CHART

DTC P0500 VEHICLE SPEED SENSOR MALFUNCTION; DTC P0503 VEHICLE SPEED SENSOR
"A" INTERMITTENT / ERRATIC / HIGH

DESCRIPTION

The description is the same as DTC P0500 of the SFI system.



For vehicles with 1GR-FE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A" ).



For vehicles with 2UZ-FE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A" ).



For vehicles with 3UR-FE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A" ).



For vehicles with 3UR-FBE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A"

DTC DETECTION CONDITION

DTC Code

Detection Item

Trouble Area

P0500

Vehicle Speed Sensor Malfunction



Vehicle speed sensor



Vehicle speed sensor signal
circuit



ECM

P0503

Vehicle Speed Sensor "A"
Intermittent / Erratic / High



Vehicle speed sensor



Vehicle speed sensor signal
circuit



ECM

P0571

Brake Switch "A" Circuit



Stop light switch



Stop light switch circuit



ECM

P0575

Cruise Control Input Circuit



ECM

DTC Code

DTC Detection Condition

Trouble Area

P0500

Vehicle speed signal from vehicle
speed sensor is cut for 0.14 sec. or
more while cruise control is in
operation



Vehicle speed sensor



Vehicle speed sensor signal
circuit



ECM

P0503

Momentary interruption and noise
are detected when a rapid change



Vehicle speed sensor



Vehicle speed sensor signal

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Cruise Control - Tundra

WIRING DIAGRAM

The wiring diagram is the same as DTC P0500 of the SFI system.



For vehicles with 1 GR-FE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A" ).



For vehicles with 2UZ-FE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A" ).



For vehicles with 3UR-FE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A" ).



For vehicles with 3UR-FBE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A"

INSPECTION PROCEDURE

The inspection procedure is the same as DTC P0500 of the SFI system.



For vehicles with 1 GR-FE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A" ).



For vehicles with 2UZ-FE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A" ).



For vehicles with 3UR-FE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A" ).



For vehicles with 3UR-FBE, refer to the following procedures (see DTC P0500 VEHICLE SPEED
SENSOR "A"

DTC P0571 BRAKE SWITCH "A" CIRCUIT

DESCRIPTION

When the brake pedal is depressed, the stop light switch sends a signal to the ECM. When the ECM receives
this signal, it cancels the cruise control. The fail-safe function operates to enable normal driving even if there is
a malfunction in the stop light signal circuit. The cancellation condition occurs when voltage is applied to
terminal STP. When the brake is applied, voltage is applied to terminal STP Of the ECM through the STOP
fuse and the stop light switch, and the ECM turns the cruise control off.

DTC DETECTION CONDITION

of vehicle speed occurs while
cruise control is in operation

circuit



ECM

DTC Code

DTC Detection Condition

Trouble Area

P0571

When voltage of STP terminal and
ST1-terminal of ECM are less than
1 V for 0.5 sec. or more



Stop light switch



Stop light switch circuit



ECM

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Cruise Control - Tundra

WIRING DIAGRAM

Fig. 12: Brake Switch - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. READ VALUE OF TECHSTREAM (STOP LIGHT SWITCH)

a. Using the Techstream, read the Data List.

Techstream

DATA LIST - CRUISE CONTROL

OK: Normal conditions listed above are displayed.

Result

RESULT REFERENCE

Tester Display

Measurement Item /

Range

Normal Condition

Diagnostic Note

Stop Light SW M-CPU

Stop light switch signal
(Main CPU) / ON or
OFF

ON: Brake pedal
depressed
OFF: Brake pedal
released

-

Result

Proceed to

NG

A

OK (for 1GR-FE)

B

OK (for 2UZ-FE)

C

OK (for 3UR-FE)

D

OK (for 3UR-FBE)

E

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Cruise Control - Tundra