Kia Optima: Body Electrical System / Multifunction Switch
Specifications
Items
|
Specifications
|
Rated voltage
|
Front fog lamp switch
|
5 V
|
Lighting
|
Auto lighting
|
Dimmer & Passing
|
Turn signal lamp
|
Wiper
|
Washer
|
14.5 V
|
Schematic diagrams
Connector and Terminal Function |
Connector A
|

|
Pin
|
Standard
|
R-MDPS
|
1
|
-
|
-
|
2
|
Headlamp low back up signal
|
Headlamp low back up signal
|
3
|
Front wiper INT volume signal
|
-
|
4
|
Ground
|
-
|
5
|
Ground (IBU)
|
Ground
|
6
|
Front wiper switch signal
|
-
|
7
|
Front wiper low back up signal
|
Front wiper low back up signal
|
8
|
IGN2
|
IGN2
|
9
|
Front washer motor switch power
|
Front washer motor switch power
|
10
|
Light switch signal
|
C-CAN (High)
|
11
|
-
|
C-CAN (Low)
|
12
|
Fog lamp switch signal
|
IGN1
|
13
|
Headlamp passing/high beam switch signal
|
-
|
14
|
Turn signal switch (LH)
|
B-CAN (High)
|
15
|
Turn signal switch (RH)
|
B-CAN (Low)
|
16
|
-
|
Battery (+)
|
Repair procedures
1. |
Disconnect the negative battery terminal.
|
2. |
Remove the steering column upper and lower shrouds.
(Refer to Body - "Steering Column Shroud Panel")
|
3. |
Remove the steering wheel.
(Refer to Steering System - "Steering Wheel")
|
4. |
Disconnect the all connector (A) from the multifunction switch.

|
5. |
Remove the multifunction switch (B) by loosening the mounting bolt (A).
Tightening torque :
7.8 - 8.8 N·m (0.8 - 0.9 Kgf·m, 5.8 - 6.5 lb·ft)
|
When install the multifunction switch, unscrew and reassemble
the clamp bolt (A) to check for sound.
|


|
1. |
Install in the reverse order of removal.
|
Multifunction Switch
Inspection
1. |
Disconnect the negative battery terminal.
|
2. |
Remove the steering column upper and lower shrouds.
(Refer to Body - "Steering Column Shroud Panel")
|
3. |
Check for continuity between the terminals in each switch position as
shown below.

Switch
|
Switch position
|
Switch terminal
|
Resistance (Ω, ±3.5%)
|
Front wiper switch
|
MIST
|
6-4
|
330
|
OFF
|
∞
|
INT (AUTO)
|
800
|
LOW
|
1800
|
HIGH
|
5700
|
Wiper intermittent volume
|
Volume 1
|
3-4
|
330
|
Volume 2
|
690
|
Volume 3
|
1310
|
Volume 4
|
2610
|
Volume 5
|
7310
|
Fog lamp switch
|
OFF
|
12-4
|
∞
|
Front
|
910
|
Rear
|
2910
|
Turn signal switch (Left)
|
OFF
|
14-4
|
∞
|
Lanechange
|
910
|
Full turn
|
2910
|
Turn signal switch (Right)
|
OFF
|
15-4
|
∞
|
Lanechange
|
910
|
Full turn
|
2910
|
Dimmer & Passing switch
|
OFF
|
13-4
|
∞
|
Passing
|
910
|
Dimmer
|
2910
|
Light switch
|
OFF
|
10-4
|
680
|
AUTO
|
∞
|
Tail lamp
|
1680
|
Low beam
|
5580
|
|
Diagnosis With KDS
1. |
In the body electrical system, failure can be quickly diagnosed by using
the vehicle diagnostic system (KDS).
The diagnostic system (KDS) provides the following information.
(1) |
Self diagnosis : Checking failure and code number (DTC)
|
(2) |
Current data : Checking the system input/output data state
|
(3) |
Actuation test : Checking the system operation condition
|
(4) |
Additional function : Controlling other features including system
option setting and zero point adjustment
|
|
2. |
Select the "Car model" and the 'IBU-BCM' to be checked in order to check
the vehicle with the tester.
– |
R-MDPS : BCM - MFSW (DN8)
|
|
3. |
Select the 'Current Data' menu to search the current state of the input/output
data.
|
4. |
To force actuate the input value of the module to be checked, select
option 'Actuation Test'.
|
Schematic diagrams
Connector and Terminal function
Repair procedures
Removal
When removing with a ...
Components and components location
Component Location
1. Panorama sunroof assembly
2. Panorama sunroof switch
3. Glass motor
4. Blind motor
...
Other information:
OFF mode
Press the front blower OFF button to turn off the front air climate control system.
However, you can still operate the mode and air intake buttons as long as the ignition
switch is in the ON position.
Climate information screen selection
Press the climate information screen selec ...
Components and components location
Components
1. Water temperature control
assembly
2. Engine coolant temperature sensor
3. Throttle body coolant hose
Repair procedures
Removal and Installation
1.
Remove the engin ...