UEM-0030

Condition
If the control unit detects that the rear left reading lamp is on when the front left reading lamp is off, a faulty control signal from the lamp circuit displays the diagnostic trouble code.

Condition
- The lamp goes off.

Possible source
- The signal wire for the rear left reading lamp is short circuited to ground
- Intermittent open circuit on signal wire.

Condition
- Courtesy lighting does not work.