|
|
|
414-03A-44 414-03A-44 High Voltage/Traction Battery DIAGNOSIS AND TESTING (Continued) • DTC C1838 Charging System Fault signal indicates zero. — The battery control module (BCM) sets DTC — A charger mode fault occurs if the BCM C1838 when a failure occurs in the traction detects the charger mode signal is not being battery charging system. The BCM uses PIDs pulled up to auxiliary battery voltage by the to indicate the charging system failure that charger. If this occurs, the BCM does not occurred. The possible failures are: enable the charger. — A charger charging after being disabled fault • DTC C1859 PRNDL Input #2 Circuit Failure occurs if the charger charging signal or the — The battery control module (BCM) sets DTC auxiliary current sensor indicates that the C1859 during the BCM on-demand self test if charger is still outputting significant current it detects the PRNDE TR2 signal is not several seconds after the BCM has grounded. An open or short in the TR2 signal commanded the charger off. wire or the gear selector not in the PARK — A charger overtemperature fault occurs if the position during the on-demand self-test will charger fault signal is asserted and the charger cause DTC C1859. ready signal is deasserted during a charge • DTC C1861 PRNDL Input #4 Circuit Failure cycle. — The battery control module (BCM) sets DTC — A charger latchup fault occurs if the charger C1861 during the BCM on-demand self test if fault signal and charger ready signal are it detects the PRNDE TR4 signal is not asserted during a charge cycle. grounded. An open or short in the TR4 signal — A charger cycling fault occurs if the charger is wire or the gear selector not in the PARK cycled on and off several times within a short position during the on-demand self-test will period of time due to a reoccurring fault cause DTC C1861. condition. If this occurs, the BCM disables the • DTC C1863 External Charging Fault charger. — The battery control module (BCM) sets DTC — A charger undercurrent fault occurs if the C1863 if the on-plug circuit indicates the BCM commands maximum power output from vehicle is plugged into a power control station the charger and little or no current is detected (PCS) and the traction inverter module (TIM) at the auxiliary current sensor for an extended indicates the vehicle is traveling faster than 15 period of time. There are several potential km/h (9.4 mph). causes for this fault. • DTC B2247 Electric Vehicle Battery Pack — A charger overcurrent fault occurs if the BCM Temperature Fault commands zero power output from the charger — The battery control module (BCM) uses four and significant current is detected at the temperature sensors to monitor the temperature auxiliary current sensor for an extended period of the traction battery. The BCM sets DTC of time. B2247 if it detects a change in temperature — A charger overvoltage fault occurs if the BCM (Tmax-Tmin) greater than 15 ° C (59 ° F) detects the traction battery voltage to be between any of the temperature sensors in the greater than 425 volts during a charge cycle. battery pack or if it detects any of the If this occurs, the BCM disables the charger. temperature sensors at a temperature greater — A charger over amp-hours fault occurs the than or equal to 83 ° C (181 ° F). If Tmax BCM detects that more than 110 amp-hours of (maximum temperature of any of the four current have been put into the traction battery battery temperature sensors) is greater than or during the charge cycle. If this occurs, the equal to 83 ° C (181 ° F), the BCM will turn off BCM disables the charger. the traction battery cooling/ventilation fan to — A charger line capacity fault occurs if the battery. The BCM will prevent charging if the BCM commands maximum power output from temperature difference between any of the the charger and little or no current is detected temperature sensors is greater than 30 ° C at the auxiliary current sensor for an extended (86 ° F). |