2NZ-FE ENGINE CONTROL  SFI SYSTEM  P0500  Vehicle Speed Sensor  


DESCRIPTION

w/o ABS:

The speedometer sensor outputs a 4-pulse signal for every revolution of the rotor shaft, which is rotated by the transaxle output shaft via the driven gear. After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter assembly, it is then transmitted to the ECM. The ECM determines the vehicle speed based on the frequency of the pulse signal.

HINT:
·

A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly.

The signal is changed to a pulse signal at the transistor in the combination meter assembly. Each ECU controls the respective system based on the pulse signal.

·

If a short occurs in any of the ECUs or in the wire harness connected to an ECU, all systems using the speed signal will not operate normally.



A253935E02
1.135,1.073 1.167,0.5 1.167,0.5 1,0.5 false 1.917,0.083 2.5,0.25 0.583,0.167 10 false 4-Pulse 4.656,0.073 5.167,0.25 0.51,0.177 10 false 4-Pulse 2.594,1.49 4.438,1.635 1.844,0.146 10 false Combination Meter Assembly 0.052,0.052 0.854,0.219 0.802,0.167 12 false w/o ABS: 5.885,1.844 6.219,1.99 0.333,0.146 10 false ECM 0.115,0.417 0.99,0.729 0.875,0.313 10 false Speedometer Sensor 1.552,2.417 2.177,2.563 0.625,0.146 10 false Transaxle

w/ ABS:

Vehicles, which are equipped with ABS (Anti-lock Brake System), detect the vehicle speed using the skid control ECU (brake actuator assembly) and speed sensor. The speed sensor monitors the wheel rotation speed and sends a signal to the skid control ECU. The skid control ECU converts the wheel speed signal into a 4-pulse signal and transmits it to the ECM via the combination meter assembly. The ECM determines the vehicle speed based on the frequency of the pulse signal.

HINT:
·

Various systems use the vehicle speed signal distributed from the combination meter assembly. Check all the components possibly related to the speed signal.

·

A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly.

The signal is changed to a pulse signal at the transistor in the combination meter assembly. Each ECU controls the respective system based on the pulse signal.

·

If a short occurs in any of the ECUs or in the wire harness connected to an ECU, all systems using the speed signal will not operate normally.



A115899E21
0.766,1.047 1.553,1.425 0.787,0.378 10 from Speed Sensor 1.817,1.96 3.237,2.123 1.420,0.163 10 Skid Control ECU 3.498,1.96 5.333,2.123 1.835,0.163 10 Combination Meter Assembly 3.113,0.599 3.921,0.776 0.809,0.177 10 4-Pulse 5.039,0.599 5.848,0.776 0.809,0.177 10 4-Pulse 6.068,1.841 6.515,2.004 0.448,0.163 10 ECM

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0500 Vehicle Speed Sensor While vehicle is being driven, no vehicle speed sensor signal transmitted to ECM.
(2 trip detection logic: for M/T models)
(1 trip detection logic: for A/T models)
·

Open or short in speed signal circuit

·

Combination meter assembly

·

ECM


Comes on DTC stored

MONITOR DESCRIPTION

If there is no speed signal from the combination meter assembly even though the ECM determines that the vehicle is being driven, the ECM interprets this as a malfunction in the speed signal circuit. The ECM then illuminates the MIL and stores this DTC.

MONITOR STRATEGY

Required Sensors/Components (Main) Vehicle speed sensor
Combination meter assembly
Skid control ECU
Required Sensors/Components (Related) Park/Neutral position switch assembly
Engine coolant temperature sensor
Crankshaft position sensor
Throttle position sensor
Mass air flow meter sub-assembly
Frequency of Operation Continuous

TYPICAL ENABLING CONDITIONS

for M/T Models
Fuel cut ON

for A/T Models
Output speed sensor signal speed 1000 rpm or higher

TYPICAL MALFUNCTION THRESHOLDS

Vehicle speed sensor signal No signal

CONFIRMATION DRIVING PATTERN

for M/T models

A240416E05
0.773,0.879 1.820,1.046 1.047,0.167 10 75 km/h or more 1.421,2.049 1.820,2.219 0.399,0.170 10 Idling 0.596,2.399 1.772,2.583 1.177,0.184 10 Ignition Switch ON 2.387,2.273 2.620,2.443 0.232,0.169 10 [A] 4.706,0.473 4.911,0.642 0.205,0.170 10 [B] 6.249,3.287 6.447,3.484 0.198,0.198 10 [D] 6.062,1.12 6.260,1.317 0.198,0.198 10 [C] 4.012,3.052 5.817,3.197 1.805,0.145 10 Total of 10 seconds or more 4.32,3.453 5.511,3.599 1.191,0.145 10 5 seconds or more 6.084,2.945 5.902,3.529 5.902,3.529 5.533,3.529 false

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON and turn the GTS on.

3.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4.

Turn the ignition switch off and wait for at least 30 seconds.

5.

Turn the ignition switch to ON and turn the GTS on [A].

6.

Start the engine.

7.

On the GTS, enter the following menus to check the fuel-cut status: Powertrain / Engine and ECT / Data List / All Data / Idle Fuel Cut.

8.

Drive the vehicle at 75 km/h (47 mph) or more for a total of 10 seconds or more [B].

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.


9.

Decelerate the vehicle by releasing the accelerator pedal for 5 seconds or more to perform the fuel-cut [C].

HINT:

While "Idle Fuel Cut" on the Data List is ON, fuel-cut control is being executed.


10.

Stop the vehicle.

11.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].

12.

Read the pending DTCs.

HINT:
·

If a pending DTC is output, the system is malfunctioning.

·

If a pending DTC is not output, perform the following procedure.



13.

Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

14.

Input the DTC: P0500.

15.

Check the DTC judgment result.

GTS Display Description
NORMAL
·

DTC judgment completed

·

System 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 Confirmation Driving Pattern and check the DTC judgment result again.




for A/T models

A198825E31
1.25,0.823 1.823,1.052 0.573,0.229 10 false 24 km/h 1.417,2 1.813,2.167 0.396,0.167 10 false Idling 0.698,2.365 2.156,2.542 1.458,0.177 10 false Ignition Switch ON 2.385,2.219 2.615,2.385 0.229,0.167 10 false [A] 4.708,0.417 4.917,0.583 0.208,0.167 10 false [B] 6.25,3.229 6.448,3.427 0.198,0.198 10 false [C] 3.719,2.969 5.635,3.115 1.917,0.146 10 false Total of 30 seconds or more

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON and turn the GTS on.

3.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4.

Turn the ignition switch off and wait for at least 30 seconds.

5.

Turn the ignition switch to ON and turn the GTS on [A].

6.

Start the engine.

7.

Drive the vehicle at 24 km/h (15 mph) or more for a total of 30 seconds or more [B].

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.


8.

Stop the vehicle.

9.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].

10.

Read the pending DTCs.

HINT:
·

If a pending DTC is output, the system is malfunctioning.

·

If a pending DTC is not output, perform the following procedure.



11.

Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

12.

Input the DTC: P0500.

13.

Check the DTC judgment result.

GTS Display Description
NORMAL
·

DTC judgment completed

·

System 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 Confirmation Driving Pattern and check the DTC judgment result again.




WIRING DIAGRAM

A293498E23
2.073,2.458 4.094,2.708 2.021,0.25 10 false Combination Meter Assembly 0.188,1.427 1.448,2.073 1.26,0.646 10 false from Brake Actuator Assembly*1 2.125,1.375 2.365,1.563 0.24,0.188 10 false 5 2.094,2.281 2.458,2.438 0.365,0.156 10 false E43 3.823,1.375 4.063,1.563 0.24,0.188 10 false 6 2.302,1.375 2.667,1.531 0.365,0.156 10 false SI 3.521,1.375 3.885,1.531 0.365,0.156 10 false +S 4.938,1.375 5.177,1.563 0.24,0.188 10 false 8 5.167,2.292 5.552,2.458 0.385,0.167 10 false A56 5.521,2.292 5.906,2.458 0.385,0.167 10 false ECM 5.125,1.375 5.51,1.542 0.385,0.167 10 false SPD 5.042,2.656 6.385,2.948 1.344,0.292 10 false to Other ECUs 0.188,2.156 1.354,2.802 1.167,0.646 10 false from Speedometer Sensor*2 1.531,3.156 3.552,3.406 2.021,0.25 10 false *1: w/ ABS 1.531,3.438 3.552,3.688 2.021,0.25 10 false *2: w/o ABS

CAUTION / NOTICE / HINT

HINT:

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.


PROCEDURE

1.READ VALUE USING GTS (VEHICLE SPEED)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON and turn the GTS on.


c.

Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Vehicle Speed.

Powertrain > Engine and ECT > Data List
Tester Display
Vehicle Speed
50003 234 10

d.

Drive the vehicle.


e.

Read the value displayed on the GTS.


Result:
Result Proceed to
Values displayed on GTS and speedometer display not equal A
Values displayed on GTS and speedometer display equal B



A

2.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)

B

2.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)
a.

Disconnect the combination meter assembly connector.


b.

Disconnect the ECM connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
E43-6 (+S) - A56-8 (SPD) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

3.CHECK COMBINATION METER SYSTEM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK COMBINATION METER SYSTEM
a.

Check the circuits that send vehicle speed signals to this system in the combination meter system.

Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM>Speed Signal Circuit


Result:
Proceed to
NEXT



NEXT

4.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
4.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Engine and ECT > Clear DTCs
50002 234

e.

Turn the ignition switch off and wait for at least 30 seconds.


f.

Start the engine.


g.

Turn the GTS on.


h.

Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.


i.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.


j.

Read the DTCs.

Powertrain > Engine and ECT > Trouble Codes
50001 234
HINT:

If no DTCs (no pending DTCs) are output to the GTS, the repair has been successfully completed.



Result:
Proceed to
NEXT



NEXT

END