Windshield Wiper/Washer Switch Circuit Test
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.
- Ignition OFF, disconnect the X1 harness connector at the S82 windshield wiper/washer switch.
- Verify a test lamp illuminates between the low reference circuit terminal 2 and B+.
- If the test lamp does not illuminate, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K9 BCM.
- Ignition ON, test for B+ between the signal cirucit terminal 1 and ground.
- 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 K9 BCM.
- Ignition ON, test for B+ between the signal cirucit terminal 3 and ground.
- 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 K9 BCM.
- Ignition On, test for 10 V between the signal circuit terminal 5 and ground.
- 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 K9 BCM.
- If greater than the specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
- If all circuits test normal, test or replace the S82 windshield wiper/washer switch.