For 1990-2009 cars

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
1 | Check other instrumentation lights. Are those lights also off? | -- | Go to Diagnostic Starting Point - Lighting Systems | Go to Step 2
2 |

1. Remove the controller.
2. Check the voltage between terminals A4 of the controller connector.

Is the voltage within the specified value?

11-14 V

Go to Step 4

Go to Step 3

3 | Repair the wiring harness between J6 terminal 3 and controller connector terminal A4. Is the repair complete? | -- | System OK | --
4 | Check the illumination lamps. Is one burned out? | -- | Go to Step 5 | Go to Step 6
5 | Replace the burned out illumination lamp. Is the repair complete? | -- | System OK | --
6 | Replace the ATC controller. Is the repair complete? | -- | System OK | --