DS4 - Check RABS Sensor Resistance

- Key "OFF".

- Rear Anti-Lock Brake Sensor (RABS) disconnected.

- Measure the resistance of the RABS.

- Is resistance between 1300 and 1550 ohms?

Yes -- Go to DS5. DS5 - Check PSOM Output Voltage

No -- Replace the RABS. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)