Eaton VORAD AlwaysAlert, Installation Manual

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Appendix
Reading Fault Codes - Troubleshooting
Faults are logged in the system memory as fault codes. A complete listing of these fault codes is provided in the Fault
Code Table.
If the "FAIL" light remains on after start up:
1. Set the range knob to the minimum level.
Note: Inactive faults are displayed if the range knob is in the 1/2 to full range position.
2. Depress the volume knob for six seconds.
3. In a few seconds the error codes will begin to flash on the Driver Display via the fail light. The format of these
codes is two digits, with a two second pause between digits and a longer six second pause between fault
codes. Record these codes and repeat the process to ensure that the codes have been properly identified.
Diagnostic Codes
Code Description Action/Cause
11 CPU Internal Failure Replace CPU
12 Memory Card or Card Reader Replace Card or CPU
13 Wiring or Driver Display Test Wiring First/Replace Component
14 Wiring or Antenna Assembly Test Wiring First/Replace Component
15 Wiring or Right Side Sensor Test Wiring First/Replace Component
16 Wiring or Left Side Sensor Test Wiring First/Replace Component
21 No Right Turn Signal Input Check Turn Signal Wires
22 No Left Turn Signal Input Check Turn Signal Wires
23 No Brake Signal Input Check Brake Wires
24 No / Bad Speed Signal Check Speed Signal Wires
26 Unrecognized Engine S/C Not Available; Update Engine Software
27 Engine not Programmed for S/C Engine Needs to be Programed for
S/C (See Engine Dealer)
28 Less than Desired Retarder Output Manually Downshift Allison Transmission
31 J1587 Link Failure Test Wiring
32 J1939 Link Failure Test Wiring and Circuit Resistance
33 Internal VBUS Failure Replace CPU
34 No Communication to Display Test Wiring First/Replace Component
35 No Communication to Antenna Test Wiring First/Replace Component
41 Last Fault Code / No Codes