Component Testing

Static Test

1. Ignition OFF, disconnect the harness connector at the S27 Head-Up Display Switch.
2. Test for 8.7-9.1kΩ between the signal terminal 4 and the low reference circuit terminal 1.
   • If not between 8.7-9.1kΩ 

     Replace the S27 Head-Up Display Switch.

   • If between 8.7-9.1kΩ 
3. Test for 8.1-8.4kΩ between the signal terminal 4 and the low reference circuit terminal 1 while pressing the Page switch.
   • If not between 8.1-8.4kΩ 

     Replace the S27 Head-Up Display Switch.

   • If between 8.1-8.4kΩ 
4. Test for 5.2- 5.5kΩ between the signal terminal 4 and the low reference circuit terminal 1 while pressing the Up switch.
   • If not between 5.2- 5.5kΩ 

     Replace the S27 Head-Up Display Switch.

   • If between 5.2- 5.5kΩ 
5. Test for 7.1-7.4kΩ between the signal terminal 4 and the low reference circuit terminal 1 while pressing the Down switch.
   • If not between 7.1-7.4kΩ 

     Replace the S27 Head-Up Display Switch.

   • If between 7.1-7.4kΩ 
6. All OK.