Component Testing

Static Test

1. Ignition OFF, disconnect the harness connector at the S27 Head-Up Display Switch.
2. Test for 8.7-9.1k ohms between the signal terminal 6 and the low reference circuit terminal 1.
   • If less than 8.7k ohms or more than 9.1k ohms  

     Replace the S27 Head-Up Display Switch.

   • If 8.7-9.1k ohms 
3. Test for 550-650 ohms between the signal terminal 6 and the low reference circuit terminal 1 while pressing the Page switch.
   • If less than 550 ohms or more than 650 ohms  

     Replace the S27 Head-Up Display Switch.

   • If 550-650 ohms 
4. Test for 1.5-1.7k ohms between the signal terminal 6 and the low reference circuit terminal 1 while pressing the Up switch.
   • If less than 1.5k ohms or more than 1.7k ohms  

     Replace the S27 Head-Up Display Switch.

   • If 1.5-1.7k ohms 
5. Test for 2.4-2.6k ohms between the signal terminal 6 and the low reference circuit terminal 1 while pressing the Down switch.
   • If less than 2.4k ohms or more than 2.6k ohms  

     Replace the S27 Head-Up Display Switch.

   • If 2.4-2.6k ohms 
6. All OK.