The acceleration sensor is used to sense rough road conditions.The sensor’s signal is used by the Engine Control Module(ECM) to prevent wrongful misfire detection.
ECM sets DTC P1309 when the output signal is higher than predetermined value.
Item
Detecting Condition
Possible cause
DTC Strategy
? Signal check, High
? Open in signal circuit
? Short to battery in signal circuit
? Open in ground circuit
? Poor connection of Acceleration senso
? Faulty Acceleration sensor
? Faulty ECM
Threshold value
? Voltage : > 3.5V
Enable Conditions
-
Diagnostic Time
? Continuous
ACCEL Sensor
Normal Parameter
While Idle
IG OFF
Voltage
2.3 ~ 2.7V
0V