For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 | With the keyless entry transmitter, attempt to operate the panic function. Do the horns and the turn signal indicators pulse on and off? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3
3 | Do any of the panic functions operate? | Go to Step 4 | Go to Diagnostic Starting Point - Keyless Entry.
4 | Do the turn signal indicators pulse on and off? | Go to Diagnostic Starting Point - Horns | Go to Diagnostic Starting Point - Lighting Systems