DTC 0104

COMPONENT DESCRIPTION
The vehicle speed sensor is installed in the transaxle. It contains a pulse generator which provides a vehicle speed signal to the speedometer. The speedometer then sends a signal to the ECM.




CONSULT REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.




ECM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values and are measured between each terminal and (25) (ECCS ground) with a voltmeter.




ON BOARD DIAGNOSIS LOGIC

OVERALL FUNCTION CHECK
Use this procedure to check the overall function of the vehicle speed sensor circuit. During this check, a 1st trip DTC might not be confirmed.

With Consult
(1) Jack up drive wheels.
(2) Start engine.




(3) Perform "VEHICLE SPEED SEN CKT" in "FUNCTION TEST" mode with CONSULT

OR

With Consult
(2) Start engine.




(3) Read vehicle speed sensor signal in "DATA MONITOR" mode with CONSULT
The vehicle speed on CONSULT should be able to exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position.

OR

With GST

(2) Start engine.




(3) Read vehicle speed sensor signal in "MODE 1" with GST.
The vehicle speed on GST should be able to exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position.
OR

DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
No Tools
(1) Start engine and warm it up sufficiently.
(2) Perform test drive at least 10 seconds continuously in the following recommended condition.

Engine speed:
1,400 - 2,400 rpm (A/T models)
1,700 - 2,400 rpm (M/T models)

Intake
manifold vacuum: -53.3 to -40.0 kPa
(-400 to -300 mmHg, -15.75 to -11.81 inHg) (A/T models)
-53.3 to -26.7 kPa (-400 to -200 mmHg, -15.75 to -7.87 inHg) (M/T models)

Gear position: Suitable position (except "N" or "P" position)

(3) Stop the vehicle, turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
(4) Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.
Even if 1st trip DTC is not detected, perform the above test drive at least one more time.

EC-VSS-01 Vehicle Speed Sensor (VSS) (DTC: P0500):

WIRING DIAGRAM




DIAGNOSTIC PROCEDURE