Kia Picanto (JA): Charging System / DC/DC Converter
Description and operation
Due
to the considerably more frequent occurrence of starting operations,
the electrical load that occurs often leads to voltage dips in the
vehicle network.
In
order to stabilize the power supply for certain voltage-sensitive
electrical components, a DC/DC converter is used in conjunction with the
ISG function.
The DC/DC converter supplies the relay with a voltage that also remains constant during the starting operation.
The DC/DC converter is fitted behind the glove box.
Via
the test leads for input voltage and the start relay, the electronics
decide whether the power is supplied to the output via the bypass or the
DC/DC converter.
In
the bypass mode, the on-board supply voltage is not fed across the
DC/DC converter, but rather is transferred directly to the outputs. In
the booster phase, the vehicle voltage is adapted.
| •
| In
the ISG mode, if the power of an audio system turns OFF by drawdown
while “Auto Starting” or “Idle Starting” function operates, replace the
DC/DC converter. |
|
Components and components location
Schematic diagrams
Repair procedures
| 1. | Turn ignition switch OFF and disconnect the battery negative (-) terminal. |
| 2. | Remove the crash pad lower panel.
(Refer to Body (Interior and Exterior) - "Crash Pad Lower Panel")
|
| 3. | Disconnect the DC/DC converter connector (A). |
| 4. | Remove the DC/DC converter (B) after removing the nut and scrow.
DC/DC converter installation nut :
4.0 - 6.0 N·m (0.4 - 0.6 kgf·m, 3.0 - 4.4 lb·ft) |
 |
After
reconnecting the battery negative cable, ISG function does not operates
until the system is stabilized, about 4 hours. If disconnecting the
negative (-) battery cable from the battery during repair work for the
vehicle equipped with AMS function, Battery sensor recalibration
procedure should be performed after finishing the repair work. |
| 1. | Install in the reverse order of removal. |
Specifications
Specification
▷ 13.5V, 120A [ISG only]
Item
Specification
Rated voltage 13.
Specifications
Specification
▷ CMF45L-DIN
Item
Specification
Capacity [20 hr/5 hr] (Ah) 45/36 Cold Cranking Amperage (A) 410 (SAE) / 410(EN) Reserve Capacity (min) 80
▷ AGM50L-DIN
Item
Specification
Capacity [20 hr/5 hr] (Ah) 50/40 Cold Cranking Amperage (A) 560 (SAE) / 560(EN) Reserve Capacity (min) 80
•
Model type description
•
Cold
Cranking Ampere (CCA): Cold Cranking Amps is a rating used in the
battery industry to define a battery's ability to start an engine in
cold temperatures.
Other information:
Components and components location
Components
Description and operation
Description
The
ECM (Electro Chromatic inside rear view Mirror) is one that
automatically dims to protect the driver’s eyes when it senses light
reflecting from the car behind.
Components and components location
Component Location
1. Driver power window switch 2. Assist power window switch 3. Rear power window switch 4. Front window motor 5. Rear window motor
Description and operation
Safety Function of Power Window
When driver door power window auto-up switch is operated, safety function is acti
