Laser FWD L4-1997cc 2.0L DOHC Turbo (1993)
Vehicle Speed Sensor: Testing and Inspection
Component Test
Vehicle Speed Sensor Circuit
Component Test
1. The Vehicle Speed Sensor (VSS) is mounted on the rear of the instrument panel. Refer to COMPONENT REPLACEMENT AND REPAIR
PROCEDURES/VSS for procedures in removing the instrument panel.
Testing VSS
2. Connect an ohmmeter to terminals 59 and 2, as shown.
3. Check for continuity/no-continuity as the speedometer cable shaft is rotated.
Note: For each rotation continuity/no-continuity should be indicated 4 times.
Harness Test
1. Disconnect the ECM harness connector.
2. Connect an ohmmeter to terminal 18.
3. Check for continuity/no-continuity as the speedometer cable shaft is rotated.
4. Disconnect the speed sensor harness connector.
5. Using a voltmeter with a minimum impedance of 10 Meg. ohms, measure the voltage at the speed sensor harness connector terminal 59.
