Rough Road Sensor: Testing and Inspection

The acceleration sensor is attached in the engine compartment 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 (Steps 1 - 2):

Troubleshooting Procedures:

TROUBLESHOOTING HINTS
When abnormal output voltage occurs at stop position of vehicle or acceleration sensor is operated beyond normal operating zone.

Using Voltmeter: