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

Kia Picanto JA 2017-2022 Service & Repair Manual / Engine Control / Fuel System / ISG (Idle Stop & Go) System / Battery sensor

Description and operation
Description
Vehicles have many control units that consume electricity. Each unit controls its own system based on information from various sensors. Hence, a stable power supply to these sensors is essential to obtain diverse information. Battery sensor (A) is mounted on battery (-) terminal. It transmits battery voltage, current, and temperature data to the ECM, which then uses these signals to generate voltage by duty cycle.

Repair procedures
Removal
1.
Turn the ignition switch OFF.
2.
Disconnect the negative (-) battery terminal (A).
Negative (-) battery terminal tightening nut :
4.0 - 6.0 N·m (0.4 - 0.6 kgf·m, 3.0 - 4.4 lb·ft)

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 (1.1 - 1.4 kgf·m, 7.9 - 10.1 lb·ft)

Installation
1.
Install in the reverse order of removal.
   
After reconnecting the negative battery cable, AMS and ISG functions will not operate for about 4 hours until the system stabilizes.
If the negative (-) battery terminal has been disconnected from the battery during repair work for a vehicle equipped with ISG function, battery sensor recalibration procedure should be performed after the repair work.
   
For vehicles equipped with battery sensor, be careful not to damage the battery sensor while replacing or recharging the battery.
1)
When replacing the battery, it should be of the same type, capacity and brand as the one originally installed to 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 on the negative post of battery, tighten the clamp to the specified torque. An excessive tightening torque can damage the PCB internal circuit and the battery terminal .
3)
When recharging the battery, ground the negative terminal of the booster battery to the vehicle body.
Battery Sensor Recalibration Procedure
After reconnecting the negative battery cable, the AMS function will not operate for about 4 hours until the system stabilizes. If the negative (-) battery terminal has been disconnected from the battery during repair work for a vehicle equipped with ISG function, battery sensor recalibration procedure should be performed after the repair work.
1.
Turn the Iginition switch ON and OFF.
2.
Park the vehicle for about 4 hours with the hood and all doors closed.
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