LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 2012 >> Enclave AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (Fixed And MOVEABLE Windows System) >> Diagnostic Information and Procedures >> Power Windows Malfunction >> Circuit/System Testing >> Passenger Window Switch Malfunction
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Passenger Window Switch Malfunction

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the S79P window switch-passenger.
  2. Test for less than 30 Ω between the ground circuit terminal 1 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify that the scan tool Passenger Window Switch at Door parameter is Inactive.
    • If the value is Up, test the signal circuit terminal 8 for a short to ground. If the circuit tests normal, test or replace the M74P window motor-passenger.
    • If the value is Down, test the signal circuit terminal 7 for a short to ground. If the circuit tests normal, test or replace the M74P window motor-passenger.
  4. Connect a 3 A fused jumper wire between the signal circuit terminal 8 and ground, verify that the scan tool Passenger Window Switch at Door parameter is Up.
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the M74P window motor-passenger.
  5. Connect a 3 A fused jumper wire between the signal circuit terminal 7 and ground, verify that the scan tool Passenger Window Switch at Door parameter is Down.
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the M74P window motor-passenger.
  6. Test for greater than 10V between the signal circuit terminal 6 and ground.
    • If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the 74P window motor-passenger.
  7. If all circuits test normal, test or replace the S79P window switch-passenger.
scientia non olet · About LEMON Manuals