Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VIKX
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 08/2016]
Title: U660E (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).

  • Open or short in vehicle speed signal circuit
  • Combination meter assembly
  • Vehicle speed sensor (Brake control system)
  • Skid control ECU (Brake control system)
  • TCM

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]; U660E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: DTC CHECK / CLEAR ).

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

SYMPTOM SIMULATION AND DTC CHECK

NG

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:

Tester Connection

Switch Condition

Specified Condition

D145-3 (+S) - Body ground

Ignition switch ON

Voltage generated intermittently

Text in Illustration

*a

Component with harness connected:

(Combination Meter Assembly)

HINT:

The output voltage should fluctuate up and down, similarly to the diagram, when the wheel is turned slowly.

NG

GO TO METER / GAUGE SYSTEM (SPEED SIGNAL CIRCUIT)

OK

3.

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - TCM)

(a) Disconnect the D145 combination meter assembly connector.

(b) Disconnect the 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

REPLACE TCM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR