Toyota Tacoma (2015-2018) Service Manual: Mechanical System Tests
MECHANICAL SYSTEM TESTS
1. STALL SPEED TEST
HINT:
This test is to check the overall performance of the engine and transmission.
CAUTION:
- This test should be done on a paved surface (a surface that is not slippery).
- To ensure safety, perform this test in an open and level area that provides good traction.
- The stall speed test should always be performed with at least 2 people. One person should observe the condition of the wheels and wheel chocks while the other is performing the test.
NOTICE:
- Do not perform the stall speed test for more than 5 seconds.
- When performing the stall speed test more than once, make sure to wait 15 seconds or more between tests.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Transmission / Data List.
(e) Run the vehicle until the transmission fluid temperature is between 50 and 80°C (122 and 176°F).
(f) Allow the engine to idle with the air conditioning off.
(g) Chock all 4 wheels.
(h) Set the parking brake and keep the brake pedal depressed firmly with your left foot.
(i) Move the shift lever to D.
(j) Depress the accelerator pedal as much as possible with your right foot.
(k) Read the engine speed (stall speed) and release the accelerator pedal immediately.
Standard value:
|
Stall Speed |
|
|---|---|
|
2220 rpm |
+ 200 rpm |
|
- 200 rpm |
|
|
Test Result |
Possible Cause |
|---|---|
|
Stall speed is lower than standard value |
|
|
Stall speed is higher than standard value |
|
2. SHIFT TIME LAG TEST
HINT:
When the shift lever is moved while the engine is idling, there will be a certain time lapse or lag before the shock can be felt. This is used for checking the condition of the clutch, and brake.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Transmission / Data List.
(e) Run the vehicle until the transmission fluid temperature is between 50 and 80°C (122 and 176°F).
(f) Allow the engine to idle with the air conditioning off.
(g) Set the parking brake and keep the brake pedal depressed firmly.
(h) Check the D position time lag.
(1) Move the shift lever to N and wait for 1 minute.
(2) Move the shift lever to D and measure the time until the shock is felt.
(3) Repeat the 2 steps above 3 times, and calculate the average time of the 3 tests.
(i) Check the R position time lag.
(1) Move the shift lever to N and wait for 1 minute.
(2) Move the shift lever to R and measure the time until the shock is felt.
(3) Repeat the 2 steps above 3 times, and calculate the average time of the 3 tests.
Standard value:
D position time lag is less than 1.2 seconds
R position time lag is less than 1.5 seconds
Evaluation|
Test Result |
Possible Cause |
|---|---|
|
D position time lag exceeds standard value |
|
|
R position time lag exceeds standard value |
|
Hydraulic Test
HYDRAULIC TEST
1. PERFORM HYDRAULIC TEST
(a) Measure the line pressure.
CAUTION:
The line pressure test should always be performed with at least 2 people. One
person should observe the condition ...
Road Test
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
(a) Based on the result of the customer problem analysis, try to reproduce the
symptoms. If the problem is that the transmission does not shift up or down ...
Other materials:
Pressure Control Solenoid "B" Actuator Stuck Off (P07757F)
SYSTEM DESCRIPTION
The ECM uses the vehicle speed signal and signals from the transmission revolution
sensors (NT, SP2) to detect the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear).
The ECM compares the actual gear with the shift schedule in the ECM memory to
detect mechanical problems of t ...
Entune Audio
Operations such as listening to audio, using the hands-free phone, confirming
vehicle information and changing multimedia system settings are started by using
the following buttons.
Multimedia system operation buttons
button
Press this button to access the Bluetooth® hands-free system.
...
Seatback table
Front passenger’s seatback can be used as a temporary table only when the
vehicle is stopped.
Fold down the front passenger’s seat to use the seatback table.
CAUTION
■Caution while driving
Observe the following precautions to avoid death or serious injury.
●Do not set up the ...
