Circuit/System Verification
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
- Vehicle in Service Mode,
- Verify the scan tool EVAP Leak Detection Pump Pressure sensor reading is within the range specified in the Altitude Versus Barometric Pressure
table.
- If not the specified range
Refer to Circuit/System Testing
- Go to next step: If within specified range
- If not the specified range
- Record the EVAP Leak Detection Pump Pressure sensor reading.
- Command the EVAP Leak Detection Pump Command ON with the scan tool and monitor the EVAP Leak Detection Pump Pressure.
- After 6 min record the EVAP Leak Detection Pump Pressure sensor reading. The reading should be 1.18 - 4 kPa (0.17-0.58 PSI) less than the initial reading from step 2.
- If not the specified range
Refer to Circuit/System Testing
- Go to next step: If within specified range
- If not the specified range
- Continue monitoring for an additional 5-10 min and then record the EVAP Leak Detection Pump Pressure sensor reading.
- The reading should be 1.18 - 4.5 kPa (0.17-0.58 PSI) less than the initial reading from step 2, and the difference between the step 4 and step 5 readings less than 0.51 kpa (.07 PSI)
- If not the specified range
Refer to Circuit/System Testing
- Go to next step: If within specified range
- If not the specified range
- Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
- Verify the DTC does not set.
- If the DTCs set
Refer to Circuit System Testing.
- Go to next step: If the DTCs do not set
- If the DTCs set
- All OK.