Toyota Tundra (2015 year). Manual — part 699
Gear position under normal conditions
1st
2nd
3rd 4th 5th 6th
*1: Actual gear position under fail-safe mode when S1 stuck ON
malfunction
2nd
2nd
3rd 4th 5th 6th
*2: Actual gear position under fail-safe mode when S1 stuck OFF
malfunction
1st*3 1st*3 3rd 3rd 3rd 3rd
*3: Under engine braking, downshifting to 1st or 2nd gear is prohibited.
MONITOR DESCRIPTION
commanded 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
P0751: Shift solenoid valve S1/Functional check
Required
sensors/Components
Shift solenoid valve S1, Speed sensor (NT), Speed sensor (SP2), Crankshaft
position sensor (NE), Throttle position sensor, MAF
Duration
OFF malfunction (A) and ON malfunction (A), (B)
0.4 seconds
OFF malfunction (B)
3 seconds
OFF malfunction (C)
1 second
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)
P0500 (Vehicle speed sensor circuit)
AB60F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
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
Transfer position
HIGH*
HINT:
*: Following conditions met
Transfer output speed
143 rpm or more
Transfer input speed/Transfer output speed (NO/NOtf)
0.9 or more, and less than 1.1
OFF Malfunction (A)
ECM selected gear
5th
Vehicle speed
2 km/h (1.2 mph) or more
Throttle valve opening angle
9% or more at 2000 rpm
(Conditions vary with engine speed)
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
or
0.93 to 1.07
or
0.66 to 0.80
or
0.51 to 0.65
OFF Malfunction (B)
Current ECM selected gear
6th
Last ECM selected gear
5th
Vehicle speed (During transition from 5th to 6th gear)
Less than 100 km/h (62.2 mph)
OFF Malfunction (C)
ECM selected gear
6th
AB60F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
Engine speed-Turbine speed (NE-NT) (After transition from 5th to 6th gear)
150 rpm or less
Vehicle speed (After transition from 5th to 6th gear)
Less than 100 km/h (62.2 mph)
ON Malfunction (A)
ECM selected gear
1st
Vehicle speed
2 km/h (1.2 mph) or more and less than 40 km/h (24.9 mph)
Engine speed-Turbine speed (NE-NT)
50 rpm or more
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
or
0.93 to 1.07
or
0.66 to 0.80
or
0.51 to 0.65
ON Malfunction (B)
ECM selected gear
5th
Vehicle speed
2 km/h (1.2 mph) or more
Throttle valve opening angle
9% or more at 2000 rpm
(Conditions vary with engine speed)
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
or
0.93 to 1.07
or
0.66 to 0.80
or
0.51 to 0.65
TYPICAL MALFUNCTION THRESHOLDS
[OFF malfunction]
AB60F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
Turbine speed/Output speed (NT/NO)
0.66 or more, and 0.80 or less
(This means actual gear is 5th)
OFF Malfunction (B)
Turbine speed-Output speed x 5th gear ratio
(NT-NO x 5th gear ratio)
1000 rpm or more
OFF Malfunction (C)
Turbine speed-Output speed x 6th gear ratio
(NT-NO x 6th gear ratio)
1000 rpm or more
[ON malfunction]
1st detection: temporary flag ON
2nd detection: pending fault code ON
ON Malfunction (A)
Turbine speed/Output speed (NT/NO)
1.83 or more, and 2.27 or less
(This means actual gear is 2nd)
ON Malfunction (B)
Turbine speed/Output speed (NT/NO)
0.66 or more, and 0.80 or less
(This means actual gear is 5th)
INSPECTION PROCEDURE
NOTICE:
Perform the universal trip to clear permanent DTCs
.
1. ACTIVE TEST
HINT:
Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be
operated without removing any parts. This non-intrusive functional inspection can be very useful because
intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early
in troubleshooting is one way to save diagnostic time. Data List information can be displayed while
performing Active Tests.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch to ON.
AB60F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
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