Component Testing
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
P13 Horn Assembly
- Ignition/Vehicle » Off
- Disconnect the electrical connector:P13 Horn Assembly
- Connect a jumper wire between the test points:Ground terminal 1 &Ground
- Momentarily connect a 15 A fused jumper wire between the test points:Control terminal 2 & 12V
Verify the component turns On and Off when connecting and disconnecting the jumper wire:P13 Horn Assembly
- If the component does not turn On and Off
Replace the component:P13 Horn Assembly
- If the component turns On and Off
- If the component does not turn On and Off
- All OK.
S33 Horn Switch
- Ignition/Vehicle » Off
- Disconnect the electrical connector: X1&X2@S33 Horn Switch
- Test for infinite resistance between the test points:Signal terminal 1 X1&Ground terminal 1 X2- SwitchNot Pressed
- If less than infinite resistance
Replace the component:S33 Horn Switch
- If infinite resistance
- If less than infinite resistance
- Test for less than 3 Ω between the test points:Signal terminal 1 X1&Ground terminal 1 X2- Switch»Pressed
- If 3 Ω or greater
Replace the component:S33 Horn Switch
- If less than 3 Ω
- If 3 Ω or greater
- All OK.