- DTC judgment completed
- System normal
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM10000000101LJ |
| Model Year Start: 2017 | Model: Sienna | Prod Date Range: [08/2016 - 11/2017] |
| Title: UA80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: P050031; Vehicle Speed Sensor "A" No Signal; 2017 MY Sienna [08/2016 - 11/2017] | ||
|
DTC |
P050031 |
Vehicle Speed Sensor "A" No Signal |
DESCRIPTION
The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU. The skid control ECU converts these wheel speed signals into a pulse signal and outputs it to the ECM via the combination meter. The ECM determines the vehicle speed based on the frequency of this pulse signal.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P050031 |
Vehicle Speed Sensor "A" No Signal |
All conditions are met for 2 seconds or more (1 trip detection logic): (a) Park/neutral position switch D input signal is ON. (b) Any one condition is met.
(c) The counter gear speed is 300 rpm or more. (d) No vehicle speed is transmitted to the ECM. |
|
Comes on |
DTC stored |
SAE Code: P0500 |
MONITOR DESCRIPTION
The ECM assumes that the vehicle is being driven when the transmission counter gear indicates more than 300 rpm or more. If there is no speed signal from the combination meter despite this condition being met, the ECM interprets this as a malfunction in the speed signal circuit. The ECM then illuminates the MIL and stores the DTC.
MONITOR STRATEGY
|
Related DTCs |
P0500: Vehicle speed sensor/Verify pulse input |
|
Required sensors/components (Main) |
Vehicle speed sensor, Combination meter, Skid control ECU |
|
Required sensors/components (Sub) |
Transmission revolution sensor (NT), ECT sensor |
|
Frequency of operation |
Continuous |
|
Duration |
2 seconds |
|
MIL operation |
Immediately |
|
Sequence operation |
None |
TYPICAL ENABLING CONDITIONS
|
The monitor will run whenever the following DTCs are not stored |
None |
|
Battery voltage |
8 V or more |
|
Ignition switch |
ON |
|
Starter |
OFF |
|
Engine |
Running |
|
Intermediate shaft speed sensor revolution |
300 rpm or more |
|
Shift change |
Shift change is completed before starting next shift change operation |
|
R position switch |
OFF |
|
D position switch |
ON |
|
Park/neutral position switch (NSW) |
OFF |
|
Pressure control solenoid circuit fail (P08C1, P08C2, P0962, P0963, P0966, P0967, P0970, P0971, P2720, P2721, P2814, P2815, P281D, P281E) |
Not detected |
|
Torque Converter Clutch Pressure Control Solenoid circuit fail (P2763, P2764) |
Not detected |
|
Torque Converter Clutch Solenoid circuit fail (P2769, P2770) |
Not detected |
|
Either a or b is met (See below) |
- |
|
a. All of the following conditions are met |
- |
|
ECT |
20°C (68°F) or more |
|
ECT sensor circuit fail (P0117, P0118) |
Not detected |
|
b. All of the following conditions are met |
- |
|
ECT |
Less than 20°C (68°F) |
|
ECT sensor circuit fail (P0117, P0118) |
Detected |
|
Any one of the following conditions is met |
Conditions 1, 2, 3, 4, 5 or 6 |
|
1. All of the following conditions are met |
- |
|
ECM selected gear |
1st |
|
Turbine speed sensor revolution |
1450 rpm or more |
|
2. All of the following conditions are met |
- |
|
ECM selected gear |
2nd |
|
Turbine speed sensor revolution |
840 rpm or more |
|
3. All of the following conditions are met |
- |
|
ECM selected gear |
3rd |
|
Turbine speed sensor revolution |
540 rpm or more |
|
4. All of the following conditions are met |
- |
|
ECM selected gear |
4th |
|
Turbine speed sensor revolution |
400 rpm or more |
|
5. All of the following conditions are met |
- |
|
ECM selected gear |
5th |
|
Turbine speed sensor revolution |
330 rpm or more |
|
6. All of the following conditions are met |
- |
|
ECM selected gear |
6th, 7th, and 8th |
|
Turbine speed sensor revolution |
300 rpm or more |
TYPICAL MALFUNCTION THRESHOLDS
|
Vehicle speed sensor signal |
No signal |
CONFIRMATION DRIVING PATTERN
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
- After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
-
When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.
Click here
![2017 - 2020 MY Sienna [08/2016 - ]; UA80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the Techstream on.
- Start the engine.
-
Drive the vehicle at 12 km/h (7.46 mph) or more for a total of 2 seconds or more. [*1]
HINT:
[*1] : Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- Stop the vehicle.
- Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
- Input the DTC: P050031.
-
Check the DTC judgment result.
Techstream Display
Description
NORMAL
ABNORMAL
- DTC judgment completed
- System abnormal
INCOMPLETE
- DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
N/A
- Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.
WIRING DIAGRAM
Refer to SFI system DTC P050031.
Click here
CAUTION / NOTICE / HINT
NOTICE:
-
Perform the universal trip to clear permanent DTCs.
Click here
-
Perform registration and/or initialization when parts related to the automatic transmission are replaced.
Click here
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (VEHICLE SPEED) |
(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 / Transmission / Data List.
(e) Drive the vehicle.
(f) In accordance with the display on the Techstream, read the Data List.
Transmission:
|
Techstream Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Vehicle Speed |
Vehicle speed/ Min.: 0 km/h (0 mph) Max.: 255 km/h (158 mph) |
Actual vehicle speed |
|
OK:
Vehicle speed displayed on Techstream and speedometer display are equal.
| OK |
|
|
|
2. |
CHECK COMBINATION METER SYSTEM |
(a) Check the circuits that send vehicle speed signals to this system in the meter system.
Click here
(b) During inspection for the meter section, if there is an instruction that indicates to go back to inspections for each system, proceed to the next step.
|
|
3. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM) |
(a) Disconnect the D145 combination meter assembly connector.
(b) Disconnect the A69 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D145-3 (+S) - A69-39 (SPD) |
Always |
Below 1 Ω |
|
D145-3 (+S) or A69-39 (SPD) - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
REPLACE ECM |
(a) Replace the ECM.
Click here
| NEXT |
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