Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

This system is serviced as a kit (seat foam, module and/or sensing mat). Perform a Passenger Presence System Preload whenever a component is replaced, refer to Passenger Presence System Rezeroing . Inspect component connectors for damage or corrosion. Repair or replace the affected component/connector:

Passenger presence module
Passenger presence module harness connector
Seat wiring harness to vehicle harness connector

The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click.

Verify the DTC remains current while moving the passenger seat forward and backward through it's full range of motion.
- If the DTC changes to History
  If the status changes this could be indication of a seat to vehicle harness connection issue, refer to Circuit/System Testing.
- Go to next step: If the DTC remains Current
Verify with the scan tool, the fault does not change status while moving the harness near each connector listed below.
- K85 Passenger Presence Module
- B60 Passenger Presence Sensor
- Any seat harness inline
  - If the status changes
    If the reading is erratic while moving the harness, perform the following:
- Inspect each connector terminal for damage or corrosion and repair as necessary.
- Ensure each connector and CPA is correctly seated.
  - Go to next step: If the status does not change
All OK.