Oscilloscope setting: 1 V/DIV (Y), 10 ms/DIV (X), DC range
Vehicle condition: drive the vehicle at 10 km/h {6.2 mph}
If there is any malfunction, perform the “Open Circuit Inspection” or “Short Circuit Inspection”.
1. Remove the VSS. (See VEHICLE SPEED SENSOR (VSS) REMOVAL/INSTALLATION[M15M-D].)
2. Verify that the sensor is free of any metallic shavings or particles.
If there is any malfunction, clean them off.
3. Install the VSS. (See VEHICLE SPEED SENSOR (VSS) REMOVAL/INSTALLATION[M15M-D].)
1. Remove the PCM. (See PCM REMOVAL/INSTALLATION[LF].)
2. Connect M-MDS to DLC-2.
3. Connect oscilloscope test leads to the following PCM connector terminals.
(+) lead: PCM terminal 2O
(–) lead: Negative battery terminal (–)
4. Start the engine.
5. Monitor VSS PID.
6. Inspect wave profile.
Oscilloscope setting: 1 V/DIV (Y), 10 ms/DIV (X), DC range
Vehicle condition: drive the vehicle at 10 km/h {6.2 mph}
If there is any malfunction, perform the “Open Circuit Inspection” or “Short Circuit Inspection”.
1. Disconnect the VSS connector.
2. Turn the ignition switch to the ON position.
3. Measure voltage at VSS terminal B.
Vehicle speed sensor (VSS) voltage
4.5—5.5 V
If voltage is normal, go to Open Circuit Inspection and Short Circuit Inspection.
If there is any malfunction, repair wiring harness between VSS and PCM.
1. Inspect the following circuit for open.
Power circuit (VSS terminal A to main relay terminal D)
Ground circuit (VSS terminal C to GND)
If an open circuit or short circuit is found, repair the malfunctioning wiring harness.
If there are no open or short circuits, perform the sensor rotor inspection.
1. Inspect the following circuit for short circuit.
Power circuit (VSS terminal A to main relay terminal D)
If an open circuit or short circuit is found, repair the malfunctioning wiring harness.
If there are no open or short circuits, perform the sensor rotor inspection.
1. Remove the VSS. (See VEHICLE SPEED SENSOR (VSS) REMOVAL/INSTALLATION[M15M-D].)
2. Shift the shift lever to neutral position.
3. Inspect sensor rotor surface via VSS installation hole while rotating a rear tire manually.a. Is the sensor rotor free of damage and cracks?b. Is the sensor rotor free of any metallic shavings or particles?
If the sensor rotor is normal, replace the VSS.
If there is any malfunction, clean or replace the sensor rotor.