For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Head Up Display (HUD) System Check? | -- | Go to Step 2 | Go to Head Up Display (HUD) System Check
2 |

1. Turn the ignition switch to the RUN position.
2. Press the ENG/MET switch on the instrument panel cluster (IPC) (causing the MPH/km/h indicator to change).

Does the units (MPH or km/h) indicator on the instrument cluster speedometer change?

--

Go to Step 3

Go to Diagnostic System Check - Instrument Cluster

3 | Press the ENG/MET switch on the IPC (causing the units indicator to change). Did the units (MPH or km/h) indicator change on the HUD display? | -- | Go to Diagnostic System Check - Instrument Cluster | Go to Step 4
4 | Does the HUD unit display only ENG (MPH) units? | -- | Go to Step 5 | Go to Step 6
5 | Test CKT 1450 (BLK) for high resistance or an open between terminal 7 of the HUD control module and G201. Is the wiring OK? | -- | Go to Step 6 | Go to Step 7
6 | Replace the Head Up Display Module Replacement . Did you complete the repair? | -- | Go to Head Up Display (HUD) System Check | --
7 | Repair the open or high resistance in CKT 1450 (BLK) between terminal 7 of the HUD control module and G201. Did you complete the repair? | -- | Go to Head Up Display (HUD) System Check | --