Toyota Tundra (2015 year). Manual — part 320
Last Modified: 9-16-2014
6.6 D
Doc ID: RM000000W790RBX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: ROAD TEST; 2015 MY Tundra
[08/2014 - ]
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
following road test referring to the automatic shift schedule and attempt to duplicate the problem
symptoms.
2. ROAD TEST
(a) Perform a road test.
CAUTION:
Check for safety before performing any tests.
NOTICE:
Be sure to inspect and adjust the engine before performing these tests.
Perform the road test with the engine coolant temperature between 60 and 100°C (140 and 212°F) and
the ATF temperature between 50 and 100°C (122 and 212°F).
Perform these tests with the air conditioning and cruise control off.
INSPECTION
PROCEDURE
Transmission
Control Switch Test
With the vehicle stationary and the shift lever in D, move the shift lever to S and return it
to D. Check that the meter display changes from D to the appropriate S range and then
back again.
S Position Test
With the vehicle stationary and the shift lever in S, move the shift lever to "+" and "-".
Check that the meter display changes between S ranges properly.
D Position Shift Test
While driving the vehicle normally, check that the transmission shifts up and down
through each gear properly.
Lock-up Function
While driving on a level surface at a constant speed in the lock-up range (80 km/h (50
mph) or more) with the shift lever in D, lightly depress the accelerator pedal and check
that the engine speed does not change abruptly.
P Position Test
Stop the vehicle on an incline (approximately 5° or more). Then move the shift lever to P
and release the parking brake. Check that the parking lock pawl holds the vehicle in place.
Abnormal Noise and
Vibration
Check for abnormal noise and vibration while driving the vehicle forward and backward,
and during shift operations.
Fluid Leakage
After performing all other road test inspections, check for fluid leakage.
A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
Last Modified: 9-16-2014
6.6 D
Doc ID: RM000000W7A0TPX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: MECHANICAL SYSTEM TESTS;
2015 MY Tundra [08/2014 - ]
MECHANICAL SYSTEM TESTS
1. STALL SPEED TEST
HINT:
Do not perform the stall speed test for more than 5 seconds.
(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 / Engine and ECT / 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:
2300 +/-200 rpm
Evaluation
TEST RESULT
POSSIBLE CAUSE
Stall speed is lower than
standard value
Stator one-way clutch is not operating properly
Torque converter is faulty (stall speed is less than standard value
by 600 rpm or more)
Engine power may be insufficient
Stall speed is higher than
standard value
Line pressure is low
C1 clutch is slipping
F3 one-way clutch is not operating properly
F4 one-way clutch is not operating properly
NOTICE:
A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
Perform the test while the ATF temperature is 50 to 80°C (122 to 176°F).
2. SHIFT TIME LAG TEST
HINT:
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / 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.
(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.
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
Line pressure is low
C1 clutch is worn
F3 one-way clutch is not operating properly
F4 one-way clutch is not operating properly
R position time lag exceeds standard value
Line pressure is low
C3 clutch is worn
B4 brake is worn
F1 one-way clutch is not operating properly
A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
Last Modified: 9-16-2014
6.6 D
Doc ID: RM000000W7B0SFX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: HYDRAULIC TEST; 2015 MY
Tundra [08/2014 - ]
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
(2) Turn the ignition switch off.
(3) Lift the vehicle up.
Text in Illustration
*1
Test Plug
SST: 09992-00095
09992-00231
09992-00271
(5) Lower the vehicle.
(6) Fully apply the parking brake and chock the 4 wheels.
(7) Start the engine and check the idling speed.
(8) Keep your left foot pressed firmly on the brake pedal and move the shift lever to D.
(9) Measure the line pressure when the engine is idling.
(10) Fully depress the accelerator pedal with your right foot. Quickly read the highest line pressure when
A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
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