DTC 0104

Vehicle Speed Sensor (VSS)
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




ECM TERMINALS AND REFERENCE VALUE
Specification data are reference values and are measured between each terminal and (43) (ECCS ground).




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 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 GST
(1) Jack up drive wheels.
(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

No Tools
(1) Jack up drive wheels.
(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.

DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
With Consult
(1) Start engine and warm it up sufficiently.
(2) Perform test drive continuously under the following recommended condition.

Testing time:
(A/T models) at least 5 seconds
(M/T models) at least 10 seconds

Engine speed:
(A/T models) 2,100 - 2,800 rpm
(M/T models) 1,700 - 2,800 rpm

Intake manifold vacuum:
(A/R models) -46.7 to -20.0 kPa
(-350 to -150 mmHg, -13.78 to -5.91 inHg)
(M/T models) -46.7 to -33.3 kPa
(-350 to -250 mmHg, -13.78 to -9.84 inHg)

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 though Diagnostic Trouble Code is not detected, perform the above test drive at least one more time.




DIAGNOSTIC PROCEDURE