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 Code |
DTC Detection Condition |
Trouble Area |
SAE |
---|---|---|---|
P050031 |
All conditions are met for 5 seconds or more (1 trip detection logic): (a) Park/neutral position switch D input signal is ON. (b) Either condition is met.
(c) Transmission revolution sensor (SP2) value is 9 km/h (5.59 mph) or more. (d) No vehicle speed is transmitted to the ECM. |
|
P0500 |
MONITOR DESCRIPTION
The ECM assumes that the vehicle is being driven when the indicated vehicle speed is 9 km/h (5.59 mph) 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 (SP2), ECT sensor |
Frequency of operation |
Continuous |
Duration |
5 sec. |
MIL operation |
Immediately |
Sequence operation |
None |
TYPICAL ENABLING CONDITIONS
Battery voltage |
8 V or higher |
Ignition switch |
ON |
Starter |
OFF |
Engine |
Running |
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 |
Time after ignition switch OFF to ON |
3 sec. or more |
Pressure control solenoid circuit fail (P0748, P0778, P0798, P2716, P2810) |
Not detected |
Vehicle speed at output speed sensor |
9 km/h (5.59 mph) or more |
Either of the following conditions is met |
Conditions 1 or 2 |
1. All of the following conditions are met |
- |
ECM selected gear |
1st |
Turbine speed sensor revolution |
1310 rpm or more |
2. All of the following conditions are met |
- |
ECM selected gear |
Not 1st |
Turbine speed sensor revolution |
760 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:
HINT:
[*1] : Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Techstream Display |
Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
N/A |
|
HINT:
WIRING DIAGRAM
Refer to SFI system DTC P050031 (See page ).
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (VEHICLE SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the Ignition switch 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 | ![]() |
CHECK FOR INTERMITTENT PROBLEMS |
|
2. |
CHECK COMBINATION METER SYSTEM |
(a) Check the circuits that send vehicle speed signals to this system in the
meter system (See page ).
(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 C9 combination meter assembly connector.
(b) Disconnect the E13 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
C9-40 (+S) - E13-24 (SPD) |
Always |
Below 1 Ω |
C9-40 (+S) or E13-24 (SPD) - Body ground and other terminals |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE ECM |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Auto Down Operation does not Fully Open Power Window (Catch Protection Function
is Activated)
DESCRIPTION
If a front door glass or the power window regulator motor assembly (for driver
door) or power window regulator motor assembly (front passenger door) does not operate
smoothly, the catch protection function may be triggered automatically, resulting
in the auto down operation being ...
Emergency flashers
Use the emergency flashers if the vehicle malfunctions or is involved in an
accident.
Press the switch to flash all the turn signal lights. To turn them off, press
the switch once again.
NOTICE
■To prevent battery discharge
Do not leave the emergency flashers on longer than necessary ...
If your vehicle has to be stopped in an emergency
Only in an emergency, such as if it becomes impossible to stop the vehicle
in the normal way, stop the vehicle using the following procedure:
Steadily step on the brake pedal
with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort required ...