Rough Road Sensor: Testing and Inspection

ACCELERATION SENSOR
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:

Troubleshooting Procedures:

TROUBLESHOOTING HINTS
When abnormal output voltage occurs when stopped of vehicle or acceleration sensor is operated beyond normal operating zone.

Using Voltmeter:

Harness Inspection Procedures: