Kia Picanto: ISG (Idle Stop & Go) System / Battery Sensor

Description and Operation

Description

The vehicle has many control units that consume electrical power. Each unit controls its own system based on information from various sensors. Therefore, stable power supply to these sensors is necessary to obtain accurate information. The battery sensor (A) is installed on the negative (-) battery terminal. It transmits the battery voltage, current, and temperature data to the ECM, which then uses these signals to generate the duty cycle voltage.

Repair Procedures

Removal

1
Turn the ignition off.
2
Disconnect the negative (-) battery terminal (A). Negative (-) battery terminal nut: 4.0–6 N·m
3
Disconnect the battery sensor connector (A).
4
Remove the battery sensor by loosening the mounting bolts (B). Battery sensor cable mounting bolt (chassis ground): 10.8–13.7 N·m

Installation

Install in the reverse order of removal.
NOTE
- After reconnecting the negative battery cable, the AMS and ISG functions will not operate for approximately 4 hours until the system stabilizes. If the negative (-) battery terminal was disconnected from the battery during vehicle repair on a vehicle equipped with ISG, the battery sensor recalibration procedure must be performed after the repair work.
NOTE
- For vehicles equipped with a battery sensor, be careful not to damage the battery sensor when replacing or charging the battery.
1. When replacing the battery, it must be of the same type, capacity, and brand as the one originally installed in the vehicle. If a battery of a different type is installed, the battery sensor may recognize the battery as abnormal.
2. When installing the ground cable to the negative battery terminal, tighten the clamp to the specified torque. Excessive tightening torque may damage the internal circuit of the printed circuit board and the battery terminal.
3. When charging the battery, ground the negative terminal of the auxiliary battery to the vehicle body.

Battery Sensor Recalibration Procedure

After reconnecting the negative battery cable, the AMS function will not operate for approximately 4 hours until the system stabilizes. If the negative (-) battery terminal was disconnected from the battery during vehicle repair on a vehicle equipped with ISG, the battery sensor recalibration procedure must be performed after the repair work.

1
Turn the ignition switch ON and OFF.
2
Park the vehicle for approximately 4 hours with the hood closed and all doors closed.