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6 AC0 INVERTER DIAGNOSTIC
The alarms are signalled by a diagnostic LED.
1 blink: logic failure ("WATCHDOG", "EEPROM KO", "LOGIC FAIL-
URE #1", "LOGIC FAILURE #2", "LOGIC FAILURE #3",
"CHECK UP NEEDED").
2 blinks: running request on start-up or error in seat sequence or double
direction request ("INCORRECT START", "HANDBRAKE",
"FORW + BACK").
3 blinks: phase voltage or capacitor charge failure
("CAPACITOR CHARGE", "VMN LOW", "VMN HIGH").
4 blinks: failure in accelerator ("VACC NOT OK", "PEDAL WIRE KO").
5 blinks: failure of current sensor
("STBY I HIGH").
6 blinks: failure of contactor driver
("COIL SHORTED", "DRIVER SHORTED", "CONTACTOR
DRIVER", "AUX OUTPUT KO", "CONTACTOR OPEN", "PEV
NOT OK", "MDI COIL SHORTED", "MDI NEG EVP", "MDI
PEV", "MDI VALVE DRIVER", "MDI DRIVER SHORTED").
7 blinks: excessive temperature ("HIGH TEMPERATURE", "THERMIC
SENSOR KO", "MOTOR TEMPERATURE").
8 blinks: failure detection from can-bus ("CAN-BUS KO").
long blink: discharge battery ("LOW BATTERY")
6.1 ANALYSIS OF ALARMS DISPLAYED ON CONSOLE
1. WATCH DOG
The test is made in both running and standby. It is a self-diagnosing test within the
logic. If an alarm should occur, replace the logic.
2. EEPROM KO
Fault in the area of memory in which the adjustment parameters are stored; this alarm
inhibits machine operation. If the defect persists when the key is switched OFF and
ON again, replace the logic. If the alarm disappears, remember that the parameters
stored previously have been cancelled and replaced by the default values.
3. LOGIC FAILURE #1
This alarm signals that an undervoltage / overvoltage protection operation has oc-
curred. Two possible reasons:
a. A real undervoltage / overvoltage situation happened.
b. Fault in the hardware section of the logic board which manages the overvoltage
protection. Replace the logic card.
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