Toyota Tundra (2015 year). Manual — part 476

OK

NOTICE:

Perform the universal trip to clear permanent DTCs

.

PROCEDURE

1.

INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU)

(a) Disconnect the D83 transmission wire connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

17 (SLU+) - 6 (SLU-)

20°C (68°F)

5.0 to 5.6 Ω

17 (SLU+) - Body ground

Always

10 kΩ or higher

6 (SLU-) - Body ground

Always

10 kΩ or higher

Text in Illustration

*a

Component without harness connected

(Transmission Wire)

NG

GO TO STEP 3

2.

CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

A760F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISS...

(a) Disconnect the D74 ECM connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

D74-10 (SLU+) - D74-11 (SLU-)

20°C (68°F)

5.0 to 5.6 Ω

D74-10 (SLU+) - Body ground

Always

10 kΩ or higher

D74-11 (SLU-) - Body ground

Always

10 kΩ or higher

Text in Illustration

*a

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

REPLACE ECM

3.

INSPECT SHIFT SOLENOID VALVE SLU

NG

REPLACE SHIFT SOLENOID VALVE SLU

OK

REPAIR OR REPLACE TRANSMISSION WIRE

A760F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISS...

Last Modified: 9-16-2014

6.6 C

Doc ID: RM000002IR0046X

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: A760F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: P2772; Four Wheel Drive

(4WD) Low Switch Circuit Range / Performance; 2015 MY Tundra [08/2014 - ]

DTC

P2772

Four Wheel Drive (4WD) Low Switch Circuit Range / Performance

DESCRIPTION

The ECM detects the signal from the transfer indicator switch.

This DTC indicates that the transfer indicator switch (L4) remains on.

DTC

CODE

DTC DETECTION CONDITION

TROUBLE AREA

P2772

Transfer indicator switch (L4) remains on while the vehicle is being

driven under the following conditions for 1.8 sec. or more (1-trip

detection logic):

(a) Output shaft speed is between 1000 and 3000 rpm.

(b) Transfer position switch is in 2WD or 4H.

Short in transfer

indicator switch (L4)

circuit

4 wheel drive control

ECU

ECM

MONITOR DESCRIPTION

The ECM monitors the transfer-case transfer indicator switch to determine when the transfer-case 4L gears are

engaged. If the transfer-case 4L gears remain engaged under the following conditions, the ECM will conclude that

The transfer-case shifter is in the "2WD" or "4H" position.

The transfer-case output shaft speed is between 1000 and 3000 rpm.

The specified time period has elapsed.

MONITOR STRATEGY

Related DTCs

P2772: Transfer indicator switch/Functional check

Required sensors/Components

Transfer indicator switch

Duration

ON malfunction (A): 1.8 seconds

ON malfunction (B): 0.5 seconds

MIL operation

1 driving cycle

TYPICAL ENABLING CONDITIONS

All

A760F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISS...

The monitor will run whenever the following DTCs are not present

P0500 (Vehicle speed sensor "A" circuit)

Output speed sensor circuit

Not circuit malfunction

Transfer neutral position switch

OFF

ON Malfunction (A)

Output speed (Transfer output speed)

1000 rpm or more, and less than 3000 rpm

ON Malfunction (B)

Output speed (Transfer output speed)

143 rpm or more

TYPICAL MALFUNCTION THRESHOLDS

Transfer indicator switch (L4)

ON

ON Malfunction (B)

Actual transfer gear ratio

Transfer input speed / Transfer output speed

0.9 or more, and less than 1.1

WIRING DIAGRAM

A760F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISS...