Vehicle Speed Sensor

VEHICLE SPEED SENSOR SIGNAL INSPECTION




1. Measure the #1 PCM terminal voltage and confirm that it is at 0 V or 5 V when the ignition switch is ON and the engine at idle.
(1) If it is at 0 V or 5 V, proceed to "Intermittent Diagnostic Test".
(2) If not, check the following points concerning the PCM connector. If there is no problems, proceed to next step.
- Female terminal opening loose
- Coupler (pin holder) damage
- Pin discoloration (blackness)
- Harness/pin clamp is loose or disconnected

2. Measure the #2 sensor terminal voltage and confirm that it is at 0 V or 5 V when the ignition switch is ON and the engine at idle.
(1) If it is at 0 V or 5 V, proceed to "Intermittent Diagnostic Test".
(2) If not, check the following points concerning the sensor connector: If there are no problems, proceed to next step.
- Female terminal opening loose
- Coupler (pin holder) damage
- Pin discoloration (blackness)
- Harness/pin clamp is loose or disconnected

3. Confirm that the #3 terminal switch voltage is at 0 V.
(1) If it is at 0 V, inspect the sensor. If necessary, replace the sensor.
(2) If not at 0 V, check the following points:
- Open circuit in harness
- Female terminal opening loose
- Coupler (pin holder) damage
- Pin discoloration (blackness)
- Harness/pin clamp is loose or disconnected.