Component Testing

P12 Horn

1. Ignition/Vehicle - Off
2. Disconnect the appropriate electrical connector:P12L Horn - LeftorP12R Horn - Right
3. Connect a jumper wire between the test points:Ground terminal 1 & Ground
4. Momentarily connect a 15 A fused jumper wire between the test points:Control terminal 2 & 12 V

   Verify the component turns On and Off when connecting and disconnecting the jumper wire:P12 Horn

   • If the component does not turn On and Off 

     Replace the component:P12 Horn

   • Go to next step: If the component turns On and Off 
5. All OK.

S33 Horn Switch

1. Ignition/Vehicle - Off
2. Disconnect the electrical connector:X1 & X2@S33 Horn Switch
3. Test for infinite resistance between the test points:Signal circuit terminal A X2 & Ground circuit terminal A X1 - SwitchNot Pressed
   • If less than infinite resistance 

     Replace the component:S33 Horn Switch

   • Go to next step: If infinite resistance 
4. Test for less than 3 ohms between the test points:Signal circuit terminal A X2 & Ground circuit terminal A X1 - Switch - Pressed
   • If 3 ohms or greater 

     Replace the component:S33 Horn Switch

   • Go to next step: If less than 3 ohms 
5. All OK.