Toyota Tundra (2015 year). Manual — part 586
OK
TESTER
DISPLAY
TEST PART
CONTROL RANGE
DIAGNOSTIC NOTE
Activate the
Solenoid
(SLT)*
Operate shift
solenoid SLT and
raise line pressure
ON or OFF
HINT:
OFF: Line pressure up (when Active Test
"Activate the Solenoid (SLT)" is performed,
ECM commands SLT solenoid to turn OFF)
ON: No action (normal operation)
[Vehicle Condition]
Vehicle
stopped
Engine
idling
HINT:
*: Activate the Solenoid (SLT) in the Active Test is performed to check the line pressure changes by
connecting SST to the automatic transmission, which is used in the Hydraulic Test
as well. Note that
the pressure values in the Active Test and Hydraulic Test are different.
OK:
The line pressure changes as specified when performing the Active Test.
NG
REPLACE SHIFT SOLENOID VALVE SLT
3.
INSPECT SHIFT SOLENOID VALVE S1
(a) Remove shift solenoid valve S1.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION SPECIFIED CONDITION
Shift solenoid valve S1 connector terminal - Shift solenoid valve S1 body
20°C (68°F)
11 to 15 Ω
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
OK
operating noise.
OK:
Valve moves and makes an operating noise.
NG
REPLACE SHIFT SOLENOID VALVE S1
4.
INSPECT TRANSMISSION VALVE BODY ASSEMBLY
(a) Check the transmission valve body assembly
.
OK:
There are no foreign objects on any valve.
NG
REPAIR OR REPLACE TRANSMISSION VALVE BODY
ASSEMBLY
OK
REPAIR OR REPLACE AUTOMATIC TRANSMISSION
ASSEMBLY
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000W800DMX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: P0756; Shift Solenoid "B"
Performance (Shift Solenoid Valve S2); 2015 MY Tundra [08/2014 - ]
DTC
P0756
Shift Solenoid "B" Performance (Shift Solenoid Valve S2)
DESCRIPTION
The ECM uses signals from the output shaft speed sensor and input speed sensor to detect the actual gear
position (1st, 2nd, 3rd, 4th, 5th or 6th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
CODE
DTC DETECTION CONDITION
TROUBLE AREA
P0756
S2 stuck ON malfunction*1:
Shifting to 3rd and 5th gears is impossible.
The ECM determines there is a malfunction when the
following conditions are both met. (2-trip detection
logic)
(a) When the ECM directs the transmission to switch to 5th
gear, the actual gear is shifted to 6th.
(b) When the ECM directs the transmission to switch to 6th
gear, the actual gear is shifted to 6th.
Shift solenoid valve S2
remains closed
Valve body is blocked
Automatic transmission
(clutch, brake, gear, etc.)
P0756
S2 stuck OFF malfunction*2:
The vehicle starts in 3rd gear and shifting to 6th gear is
impossible.
The ECM determines there is a malfunction when the
following conditions are both met. (2-trip detection
logic)
(a) When the ECM directs the transmission to switch to 1st
gear, the actual gear is shifted to 3rd.
(b) When the ECM directs the transmission to switch to 6th
gear, the actual gear is shifted to 5th.
Shift solenoid valve S2
remains open
Shift solenoid valve SLT
remains open or closed
Valve body is blocked
Automatic transmission
(clutch, brake, gear, etc.)
HINT:
1st
2nd
3rd
4th
5th
6th
*1: Actual gear position under S2 stuck ON malfunction
1st
2nd
2nd
4th
6th
6th
*2: Actual gear position under S2 stuck OFF malfunction
3rd
3rd
3rd
4th
5th
5th
MONITOR DESCRIPTION
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
by the ECM and the actual gear position are not the same, the ECM illuminates the MIL and stores the DTC.
MONITOR STRATEGY
Related DTCs
P0756: Shift solenoid valve S2/Functional check
Required sensors/Components
Shift solenoid valve S2
Duration
0.4 seconds
MIL operation
2 driving cycles
TYPICAL ENABLING CONDITIONS
All
The monitor will run whenever the following
DTCs are not present
P0717 (Turbine speed sensor circuit)
P0722 (Output speed sensor circuit)
P0973, P0974 (Shift solenoid valve S1 circuit)
P0976, P0977 (Shift solenoid valve S2 circuit)
P0979, P0980 (Shift solenoid valve S3 circuit)
P0982, P0983 (Shift solenoid valve S4 circuit)
P0985, P0986 (Shift solenoid valve SR circuit)
P0748 (Shift solenoid valve SL1 circuit)
P0778 (Shift solenoid valve SL2 circuit)
P0115, P0116, P0117, P0118, P011B (ECT (Engine coolant
temperature) sensor circuit)
P0327, P0328, P032C, P032D, P0332, P0333, P033C, P033D
(KCS sensor circuit)
ETCS (Electric Throttle Control System)
Not system down
Transmission position
"D"
Duration time from shifting "N" to "D"
4 seconds or more
ECT
40°C (104°F) or higher
Spark advance from max. retard timing by KCS
control
0° crankshaft angle or more
Engine
Starting
Calculated load value
7.75% or more (A/C off)
7.75% or more (A/C on)
Input speed/output speed (NT/NO)
NT: Input (Turbine) speed
NO: Internal counter shaft speed
3.11 to 7.58
or
1.83 to 2.27
or
1.24 to 1.49
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
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