MX-5 Miata Mazdaspeed L4-1.8L DOHC Turbo (2004)
2. Measure the voltage at the keyless control module terminals (other than terminal L) as indicated. If not as specified, inspect the parts listed under
"Action."
3. Disconnect the negative battery cable.
4. Disconnect the keyless control module connector and inspect for continuity between terminal L and bracket.
5. Inspect for continuity at terminal L as indicated below.
6. If the parts and wiring harnesses are okay but he system still does not work properly, replace the keyless control module.