DTC P1569 (70): Battery Cell Temperature Signal Circuit Low Input: General Description

A PTC (positive temperature coefficient) element has the characteristics shown above (for example, the resistance increases drastically at a temperature between 158 - 212°F (70 - 100°C)), and it is used to determine if a monitored object's temperature exceeds a set value. A PTC is installed in each of the 120 battery cells to detect overheating, an open, or a short. If the PTC input voltage is less than the lower threshold, a malfunction is detected and a DTC is stored.