LED DIAGNOSTICS
During normal operation, with no faults present, the Status LED is steadily on. If the controller detects a fault, the Status LED provides two types of information. First, it displays a slow flash (2 Hz) or a fast flash (4 Hz) to indicate the severity of the fault. Slow-flash faults are self-clearing; as soon as the fault is corrected, the vehicle will operate normally. Fast-flash faults (“❊” in Table 9) are considered to be more serious in nature and require that the keyswitch (or power enable switch, if one is used) be cycled to resume operation after the fault is corrected. Then, after the severity indication has been active for 5 seconds, the Status LED flashes a 2-digit fault identification code continuously until the fault is corrected. For example, code “4,1”—low battery voltage—appears as:
no power or defective controller solid on controller operational; no faults