DTC 4-4-4 Acceleration Sensor Signal

4-4-4 ACCELERATION SENSOR, SIGNAL

Preconditions for DTC
^ If the ECM senses that the direct-current signal from the Acceleration Sensor has changed its mean setting (2.5 Volts) to more than 3.5 Volts or less than 1.5 Volts, DTC 4-4-4 is set.

Substitute value
^ None.

Fault sources
^ Signal too high:
- Signal lead short circuited to voltage supply.
- Break in signal, ground or voltage lead.
- Voltage lead short circuited to ground.
- Contact resistance in connectors.
- Defective acceleration sensor.

^ Signal too low:
- Signal lead short circuited to ground.
- Defective acceleration sensor.

Fault symptoms
^ May result in misfiring DTCs when driving on bumpy roads.