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.
The ECM sets DTC P1309 if the signal output is higher than threshold value.
Item | Detecting Condition | Possible cause |
Monitoring Strategy | ● Signal check High | ● Poor connections ● Open ground line ● Poor connection of connector ● Shorted signal to ground line ● Faulty acceleration sensor ● Faulty ECM |
Threshold value | ● Filtered acceleration sensor signal(zero point filter) : > 3.5V | |
Enable Conditions | ||
Diagnostic Time | ||
MIL on condition |
While Idle : 2.3 ~ 2.7V
IG OFF : 0V
