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Home >> Kia Truck >> 2009 >> Borrego 2WD V8-4.6L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Relays and Modules - Computers and Control Systems >> Body Control Module >> Description and Operation >> Description >> Part 2

Part 2


RAM
The RAM drives the rear left and right turn signal lamps.

FAM
The FAM drives the front left and right turn signal lamps.

Interior Lighting

Room Lamps
Description
The vehicle is equipped with Room Lamps located on the front and rear interior roof.
The lamps low sides are driven by the RAM, and the control logic depends on:
- Front and rear doors status (RAM input)
- Tailgate status
- Lock/unlock interior lamp control information depending on RKE for vehicles not equipped with
- Burglar Alarm (signal sent from IPM to RAM)
- Lock/unlock interior lamp control information depending on Burglar Alarm state for vehicles equipped with Burglar Alarm (signals sent from IPM to RAM)
- The ignition key position (managed by the IPM and signal transmitted to the RAM).
- The Main Room Lamp switch (variation dependent equipment), which is a common control for the interior light.
Local 3-state switches (ON, OFF and DOOR positions) directly wired to the lamps can also be used to manually force the Room Lamp behavior. The RAM has no feedback of the local switches positions. No diagnostic (problem detection) is done on the Room Lamps.
Functional Diagram




Description
Light Decay definition:
"Decayed OFF" corresponds to an illumination level decay of 2 +/- 0.2 seconds after door close.
Start level at door close is 75% of full illumination level (+/- 10% due to hardware dispersion), and then linear diminishing for 2 +/- 0.2 seconds with a resolution of more than 32 steps, till 0.

Luggage Lamps
Description
The vehicle is equipped with a Luggage Lamp of which the low side is driven by the RAM, and the control logic depends on:
Tailgate status (RAM input)
The ignition key position (managed by the IPM and signal transmitted to the RAM).
The Main Room Lamp switch (variation dependent equipment), which is a common control for the interior light.
No diagnostic (problem detection) is done on the Luggage Lamps.
Functional Diagram





Key Hole Illumination
Description
This function provides an illumination of the ignition key cylinder to help the driver inserting the key.
The key cylinder illumination depends on:
The driver and assist door status (open or close) provided by the RAM,
The ignition key position (off, acc, run, start) managed by the IPM,
Ignition key reminder (inserted or not) managed by the IPM,
The Burglar Alarm state managed by the IPM (depending on vehicle variation),
Functional Diagram





IPM
Description
The keyhole illumination is switched on when receiving Driver door open switch status or Assist door open switch status CAN signals with OPEN value.
The keyhole illumination is switched off 30s after Driver door open switch status or Assist door open switch status CAN signals were received with value CLOSE.
When the ignition key switch status is RUN or START, the keyhole illumination is OFF.
When the ignition key is in OFF or ACC position, and if any transition from CLOSED to OPEN is detected on the Driver or Assist door, then the key hole illumination is switched ON for 20minute and then OFF.
When the Driver or Assist door is OPEN, and the ignition key position changes from RUN/START to OFF/ACC, then the keyhole illumination is switched ON for 20minute and then OFF.
Description
When the system enters ARM WAIT mode by Remote Key or Mechanical cylinder lock switches, the key hole illumination is switched off immediately.
Description
If the keyhole is illuminated, and both the Driver and the Assist doors status changed to CLOSED, then a 30-second timer is started.
The keyhole illumination is maintained ON while this 30-second timer is running.
While running, this 30-second timer is restarted on reception of a Driver or the Assist doors status transition.





View Enhancement

Front Wiper and Washer
Description
The vehicle is equipped with a Front Wiper and Washer, locally controlled (manual operation) by a MF switch.
This functionality is directly accessible to the driver. It consists in the possibility to activate or deactivate the wiper of the front windshield. When the driver decides to activate the front wiper, he has to choose between several modes of operation using the MF switch:
- Continuous low speed;
- Continuous high speed;
- Auto (intermittent) mode (5 levels)
Another switch is used for the front washer. It consists in activating the front washer pump, which is located under hood. The washer activation has a consequence on the activation of the front wiper in order to clean the windshield.
The driver can also be informed of the low level of washer fluid by an indication on the cluster display
Functional Diagram





IPM
Description
Interaction with Ignition Key position:
Front wiper and washer functions are active when the ignition key is in RUN position.
Else, Front wiper Ctrl and Washer Motor Ctrl are sent with OFF value.

Front wiper activation
Description
Front wiper activation modes:
- Off mode: no wiper;
- Low speed: the front wiper runs continuously with low speed;
- High speed: the front wiper runs continuously with high speed
- Mist: the front wiper runs continuously with low speed until the Mist button is released, then, the wiper stops at the next park position
Description
Washer activation logic with inactive front wiper:
When the front wiper is not active and if the washer signal is active for more than 200 ms and less than 600 ms, the following sequence is started:
T2 second (0.3 second) after the washer is switched ON, the front wiper signal is switched ON with the current level speed
T3 second (700 ms) the front wiper signal is switched OFF




T2 = 0.3 s.
T3 : 0.7 s.
Washer activation logic with inactive front wiper:
When the front wiper is not active and if the washer signal is active for more than T1=0.6 seconds, the following sequence is started:
T2 second (0.3 second) after the washer is switched ON, the front wiper signal is switched ON with the current level speed
T3 second (2.7 - 3.3 seconds) after the washer is switched OFF, the front wiper signal is switched OFF




T2 = 0.3 s.
T3 : 2.7 - 3.3 s.
Description
Washer activation logic with active front wiper:
When the front wiper is active, the current speed of the front wiper is kept during 0.3 sec of the washer signal and after T3 seconds (wiper activation due to washer) the front wiper returns to the wiping speed requested by the switch or the rain sensor. Depending on the mode of wiper that is active, the wiping action linked to the washer has to be stopped or not.
Here are the following wiper modes and the actions:









T1 > 60 ms, T2 : period of intermittence, T3 : 0.3 sec, T4 : 2.5 - 3.8 sec





FAM
Interaction with ignition key position & park switch
Description
Interaction with Ignition Key position:
Front wiper and washer functions are active when the ignition key is in RUN position.
In the START state, all the wiper and washer outputs are halted (in order to have the maximum power for the start of engine).
In the OFF and ACC states, the front wiper and washer are not activated.
Interaction with Ignition Key position:
If the ignition key leaves the RUN position while wiper operation, the wiper stops at the current position and will move to the park position the next time ignition key is RUN.
Start / stop of wiping:
When Front Wiper Ctrl CAN signal is received with:
LOW value, the output Front Wiper ON/OFF is set to ON and the output Front Wiper Low/High is set to LOW
HIGH value, the output Front Wiper ON/OFF is set to ON and the output Front Wiper Low/High is set to HIGH
OFF value, the output Front Wiper ON/OFF is set to OFF
Interaction with the park switch:
When the Front Wiper Ctrl CAN signal has OFF value and the front wiper is not parked, if the IGN2_INPUT signal goes to ON, then the output signal Front Wiper ON/OFF is set to ON and Front Wiper Low/High is not changed.
Interaction with the park switch:
When the IGN2 INPUT signal is already ON, if the Front Wiper Ctrl CAN signal has OFF value and the front wiper becomes not parked, then the output Front Wiper ON/OFF signal is not changed.
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