Keyless Control Module
WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
- Check the display of DTC U1900, using the SST (WDS or equivalent). (See DTC TABLE .)
Malfunction location
- Wiring harness 1
- Wiring harness 3
- Wiring harness 6
- Wiring harness 7
- PCM
- Keyless control module