Circuit/System Testing

Power Sunroof Malfunction

1. Disconnect the sunroof switch connector.
2. Verify that a test lamp illuminates between the ground circuit terminal C and B+.
   • If the test lamp does not illuminate, test the ground circuit for an open/high resistance.
3. Ignition ON, connect a 3A fused jumper wire between the signal circuit listed below and ground. The sunroof should be inoperative in at least one or more directions.
   • Sunroof open terminal D
   • Sunroof close terminal E
   • If the sunroof moved in all directions, replace the sunroof switch.
4. Ignition OFF, disconnect the harness connector at the sunroof motor/actuator.
5. Verify that a test lamp illuminates between the ground circuit terminal 7 and B+.
   • If the test lamp does not illuminate, test the ground circuit for an open/high resistance.
6. Verify that a test lamp illuminates between the B+ circuit terminal 5 and ground.
   • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
7. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 8 and ground.
   • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
8. Ignition OFF, connect the sunroof motor/actuator harness connector.
9. Ignition ON, at the sunroof switch harness connector, test for 8.5-12.8 volts between the signal circuits listed below and ground.
   • Sunroof open terminal D
   • Sunroof close terminal E
   • If less than the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the sunroof motor/actuator.
10. If all circuits test normal, replace the sunroof motor/actuator.