Circuit/System Verification

Ignition ON.
Verify a test pattern is displayed is displayed on the P29 Head-Up Display when performing the Head-Up Display Pattern Check on the scan tool.
- If the test pattern is not displayed
  Refer to Inoperative Head-Up display Circuit/System Testing.
- Go to next step: If the test pattern is displayed
While holding each switch listed below, verify the scan tool Head-Up Display Switch parameter is as follows:
- DIM + Switch - HUD Dimming Up/Down Pressed
- DIM - Switch - HUD Dimming Up/Down Pressed
- UP Switch - HUD Movement
- DOWN Switch - HUD Movement
- PAGE Switch - HUD Page Switch
- If the scan tool parameter does not equal the expected result with the switch in the appropriate state
  Refer to Inoperative Head-Up Display Switch Circuit/System Testing.
- Go to next step: If the scan tool parameter equals the expected result with the switch in the appropriate state
Verify the P29 Head-Up Display performs the following function with the switch in the appropriate state:
- DIM + Switch - Head-up display brightness increases
- DIM - Switch - Head-up display brightness decreases
- UP Switch - Head-up display image moves up
- DOWN Switch - Head-up display image moves down
- PAGE Switch - Head-up display image changes pages
- If the P29 Head-Up Display does not perform the expected function with the switch in the appropriate state
  Replace the P29 Head-Up Display.
- Go to next step: If the P29 Head-Up Display performs the expected function with the switch in the appropriate state
All OK.