Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VILN |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 - 08/2016] |
Title: U660E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: P2808; Pressure Control Solenoid "G" Performance (Shift Solenoid Valve SL4); 2016 MY Sienna [12/2015 - 08/2016] |
DTC
|
P2808
|
Pressure Control Solenoid "G" Performance (Shift Solenoid Valve SL4)
|
DESCRIPTION
The TCM uses the vehicle speed signal and signals from the transmission speed sensors (NC, NT) to detect the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear).
Then the TCM compares the actual gear with the shift schedule in the TCM memory to detect mechanical problems of the shift solenoid valves and valve body.
DTC No.
|
DTC Detection Condition
|
Trouble Area
|
P2808
|
The engine revs freely when 3rd or 5th gear is commanded. (2 trip detection logic)
When any of the following is detected. In addition, the condition that 4th gear is engaged when 4th gear is commanded occurs twice. (2 trip detection logic)
-
When 1st gear is commanded, 3rd gear is engaged.
-
When 2nd gear is commanded, 3rd gear is engaged.
-
When 6th gear is commanded, 5th gear is engaged.
|
-
Shift solenoid valve SL4 remains open or closed
-
Valve body is blocked
-
Automatic transaxle (clutch, brake or gear etc.)
|
MONITOR DESCRIPTION
The TCM commands gear shifts by turning the shift solenoid valves on and off. According to the engine speed (NE), input speed (NT) and output speed (NC), the TCM detects the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear). When the gear commanded by the TCM and the actual gear are not the same, the TCM illuminates the MIL and stores the DTC.
MONITOR STRATEGY
Related DTCs
|
P2808:
Shift solenoid valve SL4/OFF malfunction
Shift solenoid valve SL4/ON malfunction
|
Required sensors/Components
|
Shift solenoid valve SL4, Input speed sensor (NT), Output speed sensor (NC), Crankshaft position sensor (NE)
|
Frequency of operation
|
Continuous
|
Duration
|
OFF malfunction (A): 0.5 seconds
OFF malfunction (B): 0.8 seconds
ON malfunction: 0.8 seconds
|
MIL operation
|
2 driving cycles
|
Sequence of operation
|
None
|
TYPICAL ENABLING CONDITIONS
ALL:
The monitor will run whenever this DTC is not present.
(Not circuit malfunction)
|
P0712, P0713 (ATF temperature sensor circuit (TFT sensor))
P0115, P0117, P0118 (ECT sensor circuit)
P0715, P0717 (Input speed sensor (NT) circuit)
P0791, P0793 (Output speed sensor (NC) circuit)
P0748 (Shift solenoid valve SL1 circuit)
P0778 (Shift solenoid valve SL2 circuit)
P0798 (Shift solenoid valve SL3 circuit)
P2810 (Shift solenoid valve SL4 circuit)
P0327, P0328, P0332, P0333 (KCS sensor circuit)
P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0604, P0606, P060A, P060B, P060D, P060E, P0657, P1607, P2102, P2103, P2111, P2112, P2118, P2119, P2135 ((ETCS) Electronic throttle control system)
U0100 (CAN communication system)
|
Transmission range
|
D
|
TFT (Transmission fluid temperature)
|
-10°C (14°F) or more
|
TFT (Transmission fluid temperature) sensor circuit
|
No circuit malfunction
|
ECT (Engine coolant temperature) sensor circuit
|
No circuit malfunction
|
Input speed sensor (NT) circuit
|
No circuit malfunction
|
Output speed sensor (NC) circuit
|
No circuit malfunction
|
Shift solenoid valve SL1 circuit
|
No circuit malfunction
|
Shift solenoid valve SL2 circuit
|
No circuit malfunction
|
Shift solenoid valve SL3 circuit
|
No circuit malfunction
|
Shift solenoid valve SL4 circuit
|
No circuit malfunction
|
KCS (Knock control sensor circuit)
|
No circuit malfunction
|
(ETCS) Electronic throttle control system
|
Not system down
|
CAN communication system
|
Not system down
|
Engine
|
Starting
|
OFF malfunction (A):
TCM select gear
|
3rd or 5th
|
Throttle valve opening angle
|
3% or more
|
OFF malfunction (B):
TCM select gear
|
3rd
|
Throttle valve opening angle
|
4.5% or more at engine speed 2000 rpm (condition varies with engine speed)
|
Vehicle speed
|
2 km/h (1.2 mph) or more
|
Engine coolant temperature
|
40°C (104°F) or more
|
Input speed (NT) / Output speed (NO) with 1st
|
3.304 to 7.724
|
Input speed (NT) / Output speed (NO) with 2nd
|
1.901 to 2.340
|
Input speed (NT) / Output speed (NO) with 3rd
|
1.399 to 1.649
|
Input speed (NT) / Output speed (NO) with 4th
|
0.998 to 1.138
|
Input speed (NT) / Output speed (NO) with 5th
|
0.705 to 0.836
|
Input speed (NT) / Output speed (NO) with 6th
|
0.568 to 0.695
|
ON malfunction (A):
TCM select gear
|
1st
|
Time after transmission to 1st gear
|
0.1 seconds or more
|
Vehicle speed
|
2 to 40 km/h (1.2 to 24.9 mph)
|
Engine coolant temperature
|
40°C (104°F) or more
|
Input speed (NT) / Output speed (NO) with 1st
|
3.304 to 7.724
|
Input speed (NT) / Output speed (NO) with 2nd
|
1.901 to 2.340
|
Input speed (NT) / Output speed (NO) with 3rd
|
1.399 to 1.649
|
Input speed (NT) / Output speed (NO) with 4th
|
0.998 to 1.138
|
Input speed (NT) / Output speed (NO) with 5th
|
0.705 to 0.836
|
Input speed (NT) / Output speed (NO) with 6th
|
0.568 to 0.695
|
ON malfunction (B):
TCM select gear
|
2nd
|
Throttle valve opening angle
|
4.5% or more at engine speed 2000 rpm (condition varies with engine speed)
|
Vehicle speed
|
2 km/h (1.2 mph) or more
|
Engine coolant temperature
|
40°C (104°F) or more
|
Input speed (NT) / Output speed (NO) with 1st
|
3.304 to 7.724
|
Input speed (NT) / Output speed (NO) with 2nd
|
1.901 to 2.340
|
Input speed (NT) / Output speed (NO) with 3rd
|
1.399 to 1.649
|
Input speed (NT) / Output speed (NO) with 4th
|
0.998 to 1.138
|
Input speed (NT) / Output speed (NO) with 5th
|
0.705 to 0.836
|
Input speed (NT) / Output speed (NO) with 6th
|
0.568 to 0.695
|
ON malfunction (C):
TCM select gear
|
6th
|
Throttle valve opening angle
|
4.5% or more at engine speed 2000 rpm (condition varies with engine speed)
|
Vehicle speed
|
2 km/h (1.2 mph) or more
|
Engine coolant temperature
|
40°C (104°F) or more
|
Input speed (NT) / Output speed (NO) with 1st
|
3.304 to 7.724
|
Input speed (NT) / Output speed (NO) with 2nd
|
1.901 to 2.340
|
Input speed (NT) / Output speed (NO) with 3rd
|
1.399 to 1.649
|
Input speed (NT) / Output speed (NO) with 4th
|
0.998 to 1.138
|
Input speed (NT) / Output speed (NO) with 5th
|
0.705 to 0.836
|
Input speed (NT) / Output speed (NO) with 6th
|
0.568 to 0.695
|
ON malfunction (D):
TCM select gear
|
4th
|
Throttle valve opening angle
|
4.5% or more at engine speed 2000 rpm (condition vary with engine speed)
|
Vehicle speed
|
2 km/h (1.2 mph) or more
|
Engine coolant temperature
|
40°C (104°F) or more
|
Input speed (NT) / Output speed (NO) with 1st
|
3.304 to 7.724
|
Input speed (NT) / Output speed (NO) with 2nd
|
1.901 to 2.340
|
Input speed (NT) / Output speed (NO) with 3rd
|
1.399 to 1.649
|
Input speed (NT) / Output speed (NO) with 4th
|
0.998 to 1.138
|
Input speed (NT) / Output speed (NO) with 5th
|
0.705 to 0.836
|
Input speed (NT) / Output speed (NO) with 6th
|
0.568 to 0.695
|
TYPICAL MALFUNCTION THRESHOLDS
OFF malfunction (A):
Input speed (NT) - Output speed (NC) x Gear ratio
|
1000 rpm or more
|
OFF malfunction (B):
Input speed (NT) / Output speed (NC)
|
3.304 to 7.724
|
ON malfunction (A) and (B):
Input speed (NT) / Output speed (NC)
|
1.399 to 1.649
|
ON malfunction (C):
Input speed (NT) / Output speed (NC)
|
0.705 to 0.836
|
ON malfunction (D):
Input speed (NT) / Output speed (NC)
|
0.998 to 1.138
|
CAUTION / NOTICE / HINT
NOTICE:
Perform the universal trip to clear permanent DTCs (See page
).
PROCEDURE
1.
|
CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P2808)
|
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / ECT / Trouble Codes.
(e) Read the DTCs using the Techstream.
Result
Result
|
Proceed to
|
P2808 and other DTCs are output
|
A
|
Only P2808 is output
|
B
|
HINT:
If a solenoid is stuck OFF, DTCs for several solenoids including the malfunctioning solenoid will be detected.
A
|
|
|
2.
|
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE SHIFT POSITION)
|
NOTICE:
This test should always be performed with at least 2 people.
(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.
(e) Turn the Techstream on.
(f) Enter the following menus: Powertrain / ECT / Active Test.
(g) According to the display on the Techstream, perform the Active Test.
HINT:
Comparing the gear commanded by the Active Test with the actual gear enables confirmation of the problem (See page
).
ECT
Tester Display
|
Test Part
|
Control Range
|
Diagnostic Note
|
Control the Shift Position
|
Operates the shift solenoid valves to allow gears to selected manually.
|
-
Press "→" button: Upshift occurs
-
Press "←" button: Downshift occurs
|
Can be used to check the operation of the shift solenoid valves.
Upshifts and downshifts should be performed consecutively. A 10-second interval is required between gear changes.
Do not downshift at high speeds.
Doing so will damage the automatic transaxle.
[Vehicle Condition]
50 km/h (30 mph) or less
|
NOTICE:
-
This test can be conducted when the vehicle is stopped.
-
When shifting gears using the Active Test function, do not operate the accelerator pedal for 2 seconds before and after shifting gears.
HINT:
The gear commanded by the TCM is shown in the Data List / Shift Status display on the Techstream.
(h) Check the vehicle speed and the gear when the engine speed is 1000 rpm.
HINT:
Because the torque converter clutch has not engaged, it may be difficult to obtain the speeds specified in 4th, 5th, and 6th gear, however a difference of speed should still be evident following each gear change.
Standard:
1st
|
2nd
|
3rd
|
4th
|
5th
|
6th
|
8 to 12 km/h
(5 to 7.5 mph)
|
15 to 19 km/h
(9.3 to 11.8 mph)
|
21 to 25 km/h
(13.0 to 15.5 mph)
|
31 to 35 km/h
(19.3 to 21.7 mph)
|
44 to 48 km/h
(27.3 to 29.8 mph)
|
52 to 56 km/h
(32.3 to 34.8 mph)
|
(i) Compare the TCM commanded gear and the actual gear.
Result
Actuator Gear during Malfunction
|
TCM Commanded Gear
|
Proceed to
|
1st
|
2nd
|
3rd
|
4th
|
5th
|
6th
|
Shift solenoid SL1
|
Stuck ON
|
1st
|
2nd
|
3rd
|
4th
|
4th
|
4th
|
A
|
Stuck OFF
|
N*1
|
N*1
|
N*1
|
N*1
|
5th
|
6th
|
Shift solenoid SL2
|
Stuck ON
|
4th
|
4th
|
4th
|
4th
|
5th
|
6th
|
B
|
Stuck OFF
|
1st
|
2nd
|
3rd
|
1st
|
N*1
|
N*1
|
Shift solenoid SL3
|
Stuck ON
|
2nd
|
2nd
|
3rd
|
4th
|
5th
|
6th
|
C
|
Stuck OFF
|
1st
|
1st
|
3rd
|
4th
|
5th
|
N*1
|
Shift solenoid SL4
|
Stuck ON*3
|
3rd
|
3rd
|
3rd
|
4th
|
5th
|
5th
|
D
|
Stuck OFF
|
1st
|
2nd
|
1st
|
4th
|
N*1
|
6th
|
Shift solenoid SLT
|
Stuck ON
|
N*2
|
N*2
|
N*2
|
N*2
|
N*2
|
N*2
|
E
|
Stuck OFF*3
|
1st
|
2nd
|
3rd
|
4th
|
5th
|
6th
|
HINT:
-
*1: Neutral
-
*2: If shift solenoid SLT is stuck on, the line pressure will be low. Therefore, the amount of torque that can be transmitted by each gear is lower than the normal limit. When the engine power exceeds this lowered limit, the engine speed will increase freely.
-
*3: When shift solenoid SLT is stuck off, gear shifting is normal.
D
|
|
|
3.
|
INSPECT SHIFT SOLENOID VALVE SL4
|
(a) Remove shift solenoid valve SL4.
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
1 - 2
|
20°C (68°F)
|
5.0 to 5.6 Ω
|
Text in Illustration
*a
|
Component without harness connected:
(Shift Solenoid Valve SL3)
|
(c) Connect a battery positive (+) lead with a 21 W bulb to terminal 2 and a negative (-) lead to terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an operating sound.
OK:
Valve moves and makes an operating sound.
OK
|
|
|
4.
|
INSPECT TRANSMISSION VALVE BODY ASSEMBLY
|
(a) Check the transmission valve body assembly (See page
).
OK:
There are no foreign objects on each valve and they operate smoothly.
|