Here it is:
1. Not used
2. Open isolation valve or bad control module
3. Open dump valve wiring or bad control module
4. Closed RWAL valve switch
5. Over 16 dump pulses generated in 2WD vehicles (disabled for 4WD)
6. Erratic speed sensor while rolling
7. Electronic control module fuse pullet open, isolation output missing, or valve wiring shorted to ground.
8. Dump output missing or valve wiring shorted to ground.
9. Speed sensor wiring / resistance (usually high)
10. Sensor wiring / resistance (usually low)
11. Brake switch always on. RWAL light comes on when speed exceeds 40 MPH
12. Not used
13. Electronic control module phase lock loop failure.
14. Electronic control module check faliure.
15. Electronic control module RAM failure.