Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Data List / Active Test

DATA LIST / ACTIVE TEST

1. DATA LIST

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic 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.

(a) Warm up the engine.

(b) Turn the ignition switch off.

(c) Connect the Techstream to the DLC3.

(d) Turn the ignition switch to ON.

(e) Turn the Techstream on.

(f) Enter the following menus: Powertrain / Engine and ECT / Data List.

(g) According to the display on the Techstream, read the Data List.

Engine and ECT

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Vehicle Speed

Vehicle speed/

Min.: 0 km/h (0 mph)

Max.: 255 km/h (158 mph)

Actual vehicle speed

-

Engine Speed

Engine speed/

Min.: 0 rpm

Max.: 16384 rpm

600 to 700 rpm: Idling

-

Coolant Temp

Engine coolant temperature/

Min.: -40°C (-40°F)

Max.: 140°C (284°F)

80 to 100°C (176 to 212°F): After warming up

  • If value -40°C (-40°F): sensor circuit open
  • If value 140°C (284°F): sensor circuit shorted

Battery Voltage

Battery voltage/

Min.: 0 V

Max.: 66.000 V

11 to 14 V: Ignition switch ON

-

Accelerator Position

Accelerator pedal position/

Min.: 0%

Max.: 399.9%

Actual accelerator pedal position

-

N Range Status

Shift lever N status/

ON or OFF

  • ON: Shift lever in P or N
  • OFF: Shift lever not in P or N

-

Neutral Position SW Signal

Park/neutral position switch status/

ON or OFF

  • ON: Shift lever in P or N
  • OFF: Shift lever not in P or N

When the shift lever position displayed on the Techstream differs from the actual position, adjustment of the park/neutral position switch or the shift cable may be incorrect.

HINT:

When the failure still occurs even after adjusting these parts, See page .

Stop Light Switch

Stop light switch status/

ON or OFF

  • ON: Brake pedal depressed
  • OFF: Brake pedal released

-

SPD (NT)

Input shaft speed/

Min.: 0 rpm

Max.: 12750 rpm

  • Lock-up on (after warming up the engine): Value from transmission revolution sensor (NT) equal to engine speed
  • Lock-up off (idling with shift lever in N): Value from transmission revolution sensor (NT) nearly equal to engine speed

Data is displayed in increments of 50 rpm.

SPD (SP2)

Output shaft speed/

Min.: 0 km/h (0 mph)

Max.: 255 km/h (158 mph)

0 km/h (0 mph): Vehicle stopped (equal to vehicle speed)

-

Shift SW Status (P Range)

Park/neutral position switch status/

ON or OFF

  • ON: Shift lever in P
  • OFF: Shift lever not in P

When the shift lever position displayed on the Techstream differs from the actual position, adjustment of the park/neutral position switch or the shift cable may be incorrect.

HINT:

When the failure still occurs even after adjusting these parts, See page .

Pattern Switch (PWR/M)

PWR mode status/

ON or OFF

  • ON: PWR mode on
  • OFF: PWR mode off

-

Shift SW Status (R Range)

Park/neutral position switch status/

ON or OFF

  • ON: Shift lever in R
  • OFF: Shift lever not in R

When the shift lever position displayed on the Techstream differs from the actual position, adjustment of the park/neutral position switch or the shift cable may be incorrect.

HINT:

When the failure still occurs even after adjusting these parts, See page .

Shift SW Status (N Range)

Park/neutral position switch status/

ON or OFF

  • ON: Shift lever in N
  • OFF: Shift lever not in N

When the shift lever position displayed on the Techstream differs from the actual position, adjustment of the park/neutral position switch or the shift cable may be incorrect.

HINT:

When the failure still occurs even after adjusting these parts, See page .

Shift SW Status (N, P Range) Supported

Status of park/neutral position switch (N or P) supported/

Supp or Unsupp

-

-

Shift SW Status (N, P Range)

Park/neutral position switch status/

ON or OFF

  • ON: Shift lever in P or N
  • OFF: Shift lever not in P or N

-

Sports Shift Up SW

Sport shift up switch status/

ON or OFF

  • ON: Shift lever held in "+" (up-shift)
  • OFF: Shift lever not held in "+" (up-shift)

-

Sports Shift Down SW

Sport shift down switch status/

ON or OFF

  • ON: Shift lever held in "-" (down-shift)
  • OFF: Shift lever not held in "-" (down-shift)

-

Sports Mode Selection SW

Sport mode select switch status/

ON or OFF

  • ON: Shift lever in S, "+" or "-"
  • OFF: Shift lever not in S, "+" or "-"

-

Shift SW Status (D Range)

Park/neutral position switch status/

ON or OFF

  • ON: Shift lever in D, S, "+" or "-"
  • OFF: Shift lever not in D, S, "+" or "-"

When the shift lever position displayed on the Techstream differs from the actual position, adjustment of the park/neutral position switch or the shift cable may be incorrect.

HINT:

When the failure still occurs even after adjusting these parts, See page .

A/T Oil Temperature 1

No. 1 ATF temperature sensor value/

Min.: -40°C (-40°F)

Max.: 150°C (302°F)

  • Approx. 80°C (176°F): After stall test
  • Equal to ambient temperature when cold soak

If the value -40°C (-40°F) or 150°C (302°F), No. 1 ATF temperature sensor circuit is open or shorted.

A/T Oil Temperature 2

No. 2 ATF temperature sensor value/

Min.: -40°C (-40°F)

Max.: 150°C (302°F)

  • Approx. 80°C (176°F): After stall test
  • Equal to ambient temperature when cold soak

If the value -40°C (-40°F) or 150°C (302°F), No. 2 ATF temperature sensor circuit is open or shorted.

ATF Thermal Degradation Estimate

Estimated value of ATF thermal degradation/

Min.: 0

Max.: 65535

-

If 50000 or more is displayed for the Data List item "ATF Thermal Degradation Estimate", thermal degradation of the ATF is suspected. Perform ATF Thermal Degradation Estimate Reset after replacing the ATF.

NT Sensor Voltage

Transmission revolution sensor (NT) output voltage/

Min.: 0.000 V

Max.: 4.999 V

0.1 to 1.9 V: Engine idling

-

SP2 Sensor Voltage

Transmission revolution sensor (SP2) output voltage/

Min.: 0.000 V

Max.: 4.999 V

0.1 to 1.9 V: Engine idling

-

Lock Up

Lock up/

ON or OFF

  • ON: Lock-up operating
  • OFF: Lock-up not operating

-

Shift Status

ECM gear shift command/

1st, 2nd, 3rd, 4th, 5th or 6th

Same as actual gear

-

SLT Solenoid Status

Shift solenoid valve SLT status/

ON or OFF

  • ON: Shift solenoid valve SLT operating
  • OFF: Shift solenoid valve SLT not operating

-

SLU Solenoid Status

Shift solenoid valve SLU status/

ON or OFF

  • ON: Shift solenoid valve SLU operating
  • OFF: Shift solenoid valve SLU not operating

-

SL Solenoid Status

Shift solenoid valve SL status/

ON or OFF

  • ON: Shift solenoid valve SL operating
  • OFF: Shift solenoid valve SL not operating

-

Torque Converter Temperature Raise History

Torque converter temperature raise history status/

ON or OFF

OFF

-

2. 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 to ON.

(e) Turn the Techstream on.

(f) Enter the following menus: Powertrain / Engine and ECT / Active Test.

(g) According to the display on the Techstream, perform the Active Test.

Engine and ECT

Tester Display

Test Part

Control Range

Diagnostic Note

Connect the TC and TE1

Connects and disconnects TC and TE1.

(changes to the fluid temperature detection mode)

ON/OFF

[Vehicle Condition]

  • Ignition switch ON
  • Vehicle stopped

Activate the Solenoid (SLU)

Operates shift solenoid valve SLU

ON/OFF

[Vehicle Condition]

  • Ignition switch ON
  • Engine stopped
  • Shift lever in P or N

Activate the Solenoid (SLT)*

Operates shift solenoid valve SLT to raise the line pressure.

ON/OFF

HINT:

ON: No action (normal operation)

OFF: Line pressure up (When the Active Test of "Activate the Solenoid (SLT)" is performed, the ECM commands the shift solenoid valve SLT to turn off).

[Vehicle Condition]

  • Vehicle Stopped
  • Engine idling

Activate the Lock Up

Controls the shift solenoid valves SLU and SL to set the automatic transmission to the lock-up condition.

ON/OFF

Can be used to check shift solenoid valves SLU and SL operation.

[Vehicle Condition]

Vehicle speed: 60 km/h (36 mph) or more

Activate the Solenoid (SL)

Operates shift solenoid valve SL

ON/OFF

[Vehicle Condition]

  • Ignition switch ON
  • Engine stopped
  • Shift lever in P or N

Control the Shift Position

Operates the shift solenoid valves to allow gears to be selected manually.

  • Press "→" button: Up-shift occurs
  • Press "←" button: Down-shift occurs

Can be used to check the operation of the shift solenoid valves.

Up-shifts and down-shifts should be performed consecutively. A 10 second interval is required between gear changes.

Do not down-shift at high speeds. Doing so will damage the automatic transmission.

[Vehicle Condition]

  • 50 km/h (31 mph) or less

Activate the Solenoid (SL1)

Operates shift solenoid valve SL1

ON/OFF

[Vehicle Condition]

  • Ignition switch ON
  • Engine stopped
  • Shift lever in P or N

Activate the Solenoid (SL2)

Operates shift solenoid valve SL2

ON/OFF

[Vehicle Condition]

  • Ignition switch ON
  • Engine stopped
  • Shift lever in P or N

Activate the Solenoid (SL3)

Operates shift solenoid valve SL3

ON/OFF

[Vehicle Condition]

  • Ignition switch ON
  • Engine stopped
  • Shift lever in P or N

Activate the Solenoid (SL4)

Operates shift solenoid valve SL4

ON/OFF

[Vehicle Condition]

  • Ignition switch ON
  • Engine stopped
  • Shift lever in P or N

*: The "Activate the Solenoid (SLT)" Active Test is performed to allow confirmation that the line pressure changes. The line pressure changes are confirmed using the same SST that is used for the Hydraulic Test (See page HINT: ).

HINT:

Note that the pressure readings for the Active Test and Hydraulic Test are different.

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