Toyota Tundra (2015 year). Manual — part 324

SYMPTOM

SUSPECTED AREA

SEE

PAGE

Slip or shudder (6th)

C2 clutch

B2 brake

No engine braking (1st to 4th, shift lever in S)

C4 clutch

No engine braking (1st)

Valve body assembly

B4 brake

No engine braking (2nd)

Valve body assembly

B2 brake

No engine braking (3rd)

Valve body assembly

B1 brake

No engine braking (4th)

Valve body assembly

No kick-down

Valve body assembly

Shift point too high or too low

Valve body assembly

Poor acceleration (all positions)

Valve body assembly

Torque converter

Poor acceleration (6th)

B2 brake

C2 clutch

Front planetary gear unit

Engine stalls when starting off or stopping

Valve body assembly

Torque converter

A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...

Last Modified: 9-16-2014

6.6 U

Doc ID: RM000000W740LKX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: TERMINALS OF ECM; 2015

MY Tundra [08/2014 - ]

TERMINALS OF ECM

1. CHECK ECM

HINT:

The standard voltage at each ECM terminal is shown in the table below.

In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the

terminals to inspect. The standard voltage between the terminals is shown under "Specified Condition".

Use the illustration above as a reference for the ECM terminals.

TERMINAL NO.

(SYMBOL)

WIRING

COLOR

TERMINAL

DESCRIPTION

CONDITION

SPECIFIED

CONDITION

D74-120 (NSW) -

D74-81 (E1)

L - BR

PNP switch signal

Ignition switch ON

Shift lever in P or N

Below 1 V

Ignition switch ON

Shift lever not in P or

N

11 to 14 V

D74-2 (P) - D74-81

(E1)

G-B - BR

P shift position switch

signal

Ignition switch ON

Shift lever in P

11 to 14 V

Ignition switch ON

Shift lever not in P

Below 1 V

D74-26 (R) - D74-81

(E1)

L-R - BR

R shift position switch

signal

Ignition switch ON

Shift lever in R

11 to 14 V

A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...

TERMINAL NO.

(SYMBOL)

WIRING

COLOR

TERMINAL

DESCRIPTION

CONDITION

SPECIFIED

CONDITION

Ignition switch ON

Shift lever not in R

Below 1 V

D74-25 (N) - D74-81

(E1)

G-W - BR

N shift position switch

signal

Ignition switch ON

Shift lever in N

11 to 14 V

Ignition switch ON

Shift lever not in N

Below 1 V

D74-27 (D) - D74-81

(E1)

G - BR

D shift position switch

signal

Ignition switch ON

Shift lever in D

11 to 14 V

Ignition switch ON

Shift lever not in D

Below 1 V

A24-25 (S) - D74-81

(E1)

Y - BR

S shift position switch

signal

Ignition switch ON

Shift lever in S

11 to 14 V

Ignition switch ON

Shift lever not in S

Below 1 V

A24-38 (SFTU) -

D74-81 (E1)

G - BR

Up-shift position switch

signal

Ignition switch ON

Shift lever in S

11 to 14 V

Ignition switch ON

Shift lever in "+"

(up-shift)

Below 1 V

A24-27 (SFTD) -

D74-81 (E1)

BE - BR

Down-shift position

switch signal

Ignition switch ON

Shift lever in S

11 to 14 V

Ignition switch ON

Shift lever in "-"

(down-shift)

Below 1 V

D74-7 (S1) - D74-81

(E1)

R - BR

S1 solenoid signal

1st gear

Below 1 V

Not in 1st gear

11 to 14 V

D74-6 (S2) - D74-81

(E1)

W - BR

S2 solenoid signal

1st, 2nd or 6th gear

11 to 14 V

3rd, 4th or 5th gear

Below 1 V

D74-3 (S3) - D74-81

(E1)

G-W - BR

S3 solenoid signal

1st, 2nd or 3rd gear

11 to 14 V

4th, 5th or 6th gear

Below 1 V

D74-5 (S4) - D74-81

G-R - BR

S4 solenoid signal

5th or 6th gear

11 to 14 V

A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...

TERMINAL NO.

(SYMBOL)

WIRING

COLOR

TERMINAL

DESCRIPTION

CONDITION

SPECIFIED

CONDITION

(E1)

1st, 2nd, 3rd or 4th gear

Below 1 V

D74-4 (SR) - D74-81

(E1)

G - BR

SR solenoid signal

1st, 2nd, 3rd or 4th gear

11 to 14 V

5th or 6th gear

Below 1 V

D74-14 (SL1+) -

D74-15 (SL1-)

Y - L

SL1 solenoid signal

5th or 6th gear

Pulse generation

D74-12 (SL2+) -

D74-13 (SL2-)

G-R - L-W

SL2 solenoid signal

Engine is idling

Pulse generation

D74-9 (SLT+) -

D74-8 (SLT-)

B - G-B

SLT solenoid signal

Engine is idling

Pulse generation

D74-10 (SLU+) -

D74-11 (SLU-)

L-Y - L-R

SLU solenoid signal

5th gear (lock-up) or 6th gear

(lock-up)

Pulse generation

D74-122 (THO1) -

D74-98 (E2)

G-Y - BR

No. 1 ATF temperature

sensor signal

No. 1 ATF temperature: 115°C

(239°F) or more

Below 1.5 V

D74-99 (THO2) -

D74-98 (E2)

L - BR

No. 2 ATF temperature

sensor signal

No. 2 ATF temperature: 115°C

(239°F) or more

Below 1.5 V

D74-101 (SP2+) -

D74-100 (SP2-)

Y - B

Speed sensor SP2 signal

Vehicle speed 20 km/h (12

mph)

Pulse generation

(see waveform

1)

D74-124 (NT+) -

D74-123 (NT-)

Y - B

Speed sensor NT signal

Engine idling

(shift lever in P or N)

Pulse generation

(see waveform

2)

A24-10 (CANH) -

D74-81 (E1)

GR - BR

CAN communication line Ignition switch ON

Pulse generation

(see waveform

3)

A24-11 (CANL) -

D74-81 (E1)

W - BR

CAN communication line Ignition switch ON

Pulse generation

(see waveform

4)

(a) Using an oscilloscope, check waveform 1.

Reference

TERMINAL NO.

(SYMBOL)

TOOL SETTING

CONDITION

D74-101 (SP2+) -

D74-100 (SP2-)

2 V/DIV., 20

msec./DIV.

Vehicle speed 20 km/h

(12 mph)

A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...