- Open or short in vehicle speed signal circuit
- Combination meter assembly
- Vehicle speed sensor (Brake control system)
- Skid control ECU (Brake control system)
- TCM
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIMT |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 08/2016] |
| Title: U660F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: P0500; Vehicle Speed Sensor "A"; 2016 MY Sienna [12/2015 - 08/2016] | ||
|
DTC |
P0500 |
Vehicle Speed Sensor "A" |
DESCRIPTION
The speed sensors detect the wheel speed and send the appropriate signals to the skid control ECU. The skid control ECU converts these wheel speed signals into a 4-pulse signal and outputs it to the TCM via the combination meter assembly. The TCM determines the vehicle speed based on the frequency of these pulse signals.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0500 |
When the engine coolant temperature sensor is normal and the counter gear speed is 300 rpm or more, the vehicle speed signal is not input for 2 seconds or more (1-trip detection logic). |
|
MONITOR DESCRIPTION
The TCM assumes that the vehicle is being driven when the transmission counter gear indicates more than 300 rpm and over 30 seconds have passed since the park/neutral position switch was turned off. If there is no vehicle speed signal with these conditions satisfied, the TCM concludes that there is a vehicle speed signal malfunction. The TCM will turn on the MIL and store the DTC.
MONITOR STRATEGY
|
Related DTCs |
P0500: Vehicle Speed Sensor Circuit |
|
Required sensors/components (Main) |
Vehicle speed sensor, Combination meter assembly, Skid control ECU |
|
Required sensors/components (Sub) |
Output speed sensor (NC), Engine coolant temperature (ECT) sensor |
|
Frequency of operation |
Continuous |
|
Duration |
2 seconds |
|
MIL operation |
Immediate |
|
Sequence operation |
None |
TYPICAL ENABLING CONDITIONS
|
Engine |
Running |
|
Intermediate shaft speed sensor revolution |
300 rpm or more |
|
Battery voltage |
8 V or more |
|
Ignition switch |
ON |
|
Starter |
OFF |
|
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 (P0115, P0117, P0118, P0125) |
Not detected |
|
Time after park/neutral position switch ON to OFF |
2 seconds or more |
|
b. All of the following conditions are met |
|
|
ECT |
Less than 20°C (68°F) |
|
ECT sensor circuit fail (P0115, P0117, P0118, P0125) |
Detected |
|
Time after park/neutral position switch ON to OFF |
30 seconds or more |
TYPICAL MALFUNCTION THRESHOLDS
|
Vehicle speed sensor signal |
No pulse input |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Perform the universal trip to clear permanent DTCs (See page
![2016 MY Sienna [12/2015 - 08/2016]; U660F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
).
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (VEHICLE SPEED) |
(a) Drive the vehicle and check whether the operation of the speedometer in the combination meter assembly is normal.
HINT:
- The vehicle speed sensor is operating normally if the speedometer reading is normal.
- If the speedometer does not operate, check it by following the procedure described for a speedometer malfunction.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / ECT / Data List / All Data / Vehicle Speed.
(f) Drive the vehicle.
(g) Read the value displayed on the Techstream.
OK:
Vehicle speeds displayed on the Techstream and speedometer display are equal.
| OK |
|
|
|
2. |
INSPECT COMBINATION METER ASSEMBLY (SPD SIGNAL WAVEFORM) |
|
(a) Inspect the combination meter assembly using an oscilloscope. (1) Move the shift lever to N. (2) Jack up the vehicle. (3) Turn the ignition switch to ON. (4) Measure the voltage between the terminal of the combination meter assembly and the body ground while the wheel is turned slowly. Standard Voltage:
Text in Illustration
HINT: The output voltage should fluctuate up and down, similarly to the diagram, when the wheel is turned slowly. |
|
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - TCM) |
(a) Disconnect the D145 combination meter assembly connector.
(b) Disconnect the B2 TCM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D145-3 (+S) - B2-3 (SPD) |
Always |
Below 1 Ω |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|