Kia Optima: Inspection - Battery. Repair procedures - Charging System - Engine Electrical System - Kia Optima TF 2011-2020 Service ManualKia Optima: Inspection

Battery Diagnostic Flow

Vehicle parasitic current inspection

Vehicle parasitic current inspection
1. Turn the all electric devices OFF, and then turn the ignition switch OFF.
2. Close all doors except the engine hood, and then lock all doors.
(1) Disconnect the hood switch connector.
(2) Close the trunk lid.
(3) Close the doors or remove the door switches.
3. Wait a few minutes until the vehicles electrical systems go to sleep mode.
For an accurate measurement of a vehicle parasitic current, all electriacl systems should go to sleep mode. (It takes at least one hour or at most one day.) However, an approximate vehicle parasitic current can be measured after 10~20 minutes.
4. Connect an ammeter in series between the battery (-) terminal and the ground cable, and then disconnect the clamp from the battery (-) terminal slowly.
Be careful that the lead wires of an ammeter do not come off from the battery (-) terminal and the ground cable to prevent the battery from being reset. In case the battery is reset, connect the battery cable again, and then start the engine or turn the ignition switch ON for more than 10 sec. Repeat the procedure from No. 1.

To prevent the battery from being reset during the inspection,

1) Connect a jump cable between the battery (-) terminal and the ground cable.
2) Disconnect the ground cable from the battery (-) terminal.
3) Connect an ammeter between the battery (-) terminal and the ground cable.
4) After disconnecting the jump cable, read the current value of the ammeter.

5. Read the current value of the ammeter.
A. If the parasitic current is over the limit value, search for abnormal circuit by removing a fuse one by one and checking the parasitic current.
B. Check the parasitic current again, and search for suspected unit by removing a unit connected with the abnormal circuit one by one.

Limit value (after 10~20 min.) : Below 50mA

Removal and Installation
1. Disconnect the terminals from the battery. Tightening torque :(+) terminal (A) : 7.8 ~ 9.8N.m (0.8 ~ 1.0kgf.m, 5.8 ~ 7.2lb-ft) (-) terminal (B) : 4.0 ...

Cleaning
1. Make sure the ignition switch and all accessories are in the OFF position. 2. Disconnect the battery cables (negative first). 3. ...

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