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Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission (Ab60E) - Diagnostic Codes (2 Of 2) & Circuit Tests) >> Automatic Transmission System >> DTC P0781: 1-2 Shift (1-2 Shift Valve) [08/2015 - 08/2017] >> Typical Enabling Conditions

Typical Enabling Conditions

WARNING: This page is about a different variant/trim than selected.
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
CONDITION (A)

ECM selected gear 2nd
Vehicle speed 2 km/h (1.2 mph) or more
Output speed 2nd → 1st down-shift point 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
CONDITION (B)

ECM selected gear 4th
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
CONDITION (C)

Current ECM selected gear 5th
Last ECM selected gear 4th
Vehicle speed (During transition from 4th to 5th gear) Less than 100 km/h (62.2 mph)
CONDITION (D)

ECM selected gear 5th
Engine speed - Turbine speed (NE - NT) (After transition to 5th gear) 50 RPM or less
Vehicle speed (After transition to 5th gear) Less than 100 km/h (62.2 mph)