Rough Road Sensor: Testing and Inspection

ACCELERATION SENSOR
The acceleration sensor is attached to the strut tower on the driver's side. While driving, the rough road condition is sensed by the acceleration sensor and the ECM uses this input signal to avoid the wrong misfire detection.




CIRCUIT DIAGRAM







HARNESS INSPECTION PROCEDURES




USING VOLTMETER




TROUBLESHOOTING PROCEDURES

HINT: When abnormal output voltage occurs at a stopped position the acceleration sensor is operating beyond normal operation.