Circuit/System Testing

Start the vehicle and monitor the BARO parameter with the scan tool for a steady value.

• If the BARO parameter fluctuates rapidly:

• Test for an intermittent and for a poor connection at the BARO sensor.
• Test for proper BARO wiring harness routing.
• Test all of the BARO sensor circuits for intermittent shorts or opens.
• Test for an intermittent and for a poor connection at the control module.

• If the circuits test normal, replace the BARO sensor.