This is the inspection procedure to determine whether it is present DTC or memoried one by monitoring the current signal or by using the function of oscilloscope with Hi-scan pro.
Sart engine and warm up to operating temperature.
Probe(+) : Measure waveform at terminal 3 of acceleration sensor.
Probe(-) : Chassis ground.
Service standard
While Idle : 2.3 ~ 2.7V
IG OFF : 0V
After removing acceleration sensor,check if acceleration sensor responds well to impaction while looking sensor’s signal waveform.
In case there is no symptom and wrong data but DTC is shown
The problem may be intermittent so slightly shake the connector and harness vertically and horizontally to check if there is any data changes
If the data changes normally, the problem was intermittent so erase DTC and verify the same DTC reoccure.
Go to "Terminal and Connector inspection" procedure.
In case there is symptom and wrong data with DTC
Check open,short or connector’s connection for acceleration sensor.
Check the deterioration of acceleration sensor performance.
Go to "Circuit Inspection" procedure.