Part 2 of 2

POWER DOOR LOCK SYSTEM
When the BCM receives an input for a lock request (door lock switch, RKE, or door key cylinder switch (VTSS only)), it will ground the lock relay coil for a specified amount of time ranging from 375 msec - 1 second. If the request is there beyond 1 second, the BCM considers the door lock signal stuck and will turn the relay coil off. Once a door lock signal is stuck, the signal input for that door is ignored until the stuck fault disappears. The unlock signal operates in the same fashion as the lock signal. The door lock switches provide a variable amount of resistance thereby dropping the voltage of the multiplexed (MUX) circuit and the BCM will respond to that command.

Other power door lock features include:

Sliding Door Memory Lock - When the BCM receives an input for a lock request and a sliding door is open, the BCM will turn on the lock relay as described above, and will turn it on again when all sliding doors are closed.

NOTE: If the BCM receives an unlock input before a sliding door is closed this action will cancel the memory lock.

Door Lock Inhibit - When the key is in the ignition and in the OFF position, and any door except the rear liftgate is open, all door lock switches are disabled. The unlock switches are still functional. This protects against locking the vehicle with the keys still in the ignition.

Automatic Door Locks - This feature can be enabled or disabled by using either the DRB III or customer programming method. When enabled, all the doors will lock when the vehicle reaches a speed of 15 mph and all doors are closed. If a door is opened and the vehicle slows to below 15 mph, the door locks will operate again once all doors are closed and the speed is above 15 mph.

RKE (Remote Keyless Entry) Interface - The Body Control Module interfaces with the RKE receiver via a one-way serial bus interface. The RKE receiver sends a 0 - 5 volt pulse width signal to the BCM depending on which button on the transmitter was pressed. The BCM controls the door lock/unlock relays and arming/disarming of the Vehicle Theft Security System (if equipped). The RKE receiver is capable of retaining up to 4 individual vehicle access codes (4 transmitters). If the PRNDL is in any position except park, the BCM will ground the interface wire thereby disabling the RKE.

The RKE module can be programmed via the DRB III or customer programming method. The BCM will only allow programming mode to be entered when the ignition is in the ON position, the PRNDL is in park position, and the VTSS (if equipped) is in the disarmed mode.

Programming A RKE Transmitter (Customer Programming Method)

NOTE: A VALID, PREVIOUSLY PROGRAMMED TRANSMITTER MUST BE USED.

1. Ensure batteries are approximately 3.2 volts each.
2. Turn the ignition ON, place the transmission in park, and make sure the vehicle theft security system (if equipped) is in disarm mode.
3. Using the previously programmed transmitter, press and hold the unlock button for 4 - 8 seconds. While still holding the unlock button, press the panic button, then release both buttons. The BCM will acknowledge that it has grounded the RKE module program enable wire by sounding a single chime tone.
4. Press any button ON the transmitter. A single chime tone will acknowledge the RKE module has accepted the transmission.
5. Repeat step 4 for all transmitters that will be used with this vehicle (up to 4 total).
6. Programming mode will last for 30 seconds. To get out of programming mode sooner, turn the ignition OFF.

Programming A RKE Transmitter (DRB Programming)
1. Ensure batteries are approximately 3.2 volts each.
2. Turn the ignition ON, place the transmission in park, and make sure the vehicle theft security system (if equipped) is in disarm mode.
3. Select "Program RKE" under "Miscellaneous". If the message "BCM is in Programming Mode" does not appear, exit and select "Program RKE" again.
4. Press any button ON the transmitter. A single chime tone will acknowledge the RKE module has accepted the transmission.
5. Repeat step 4 for all transmitters that will be used with this vehicle (up to 4 total).
6. Programming mode will last for 30 seconds. To get out of programming mode sooner, press "Back Page".

RADIO SYSTEM
There are three radio systems available that will be on the CCD bus. They are the RBR, RBN and RAZ models. The main reason they are on the bus is because of the radio remote controls in the steering wheel. They can control volume up/down, seek up/down and preset station selections. These systems also communicate with the Body Control Module and will set a specific code if there is a problem with the remote controls.

The RBR will have 4 speakers and the others will have 8 speaker locations (Infinity sound). All of the 4 main quarter speakers have a built in amplifier. The I/P and pillar speakers receive their signals from the quarter speakers. Depending on the manufacture some systems will have a Front/Rear channel system and others will have a Left/Right channel system. If one of the main quarter speaker audio circuits experiences a short, the other speakers on that channel will also shut down until the circuit is repaired. The radio will also set a trouble code, which is assessible with the DRB, indicating which channel is effected.

VEHICLE COMMUNICATION
The body system consists of a combination of modules that communicate over the CCD (Chrysler Collision Detection multiplex system) bus. Through the CCD bus, information about the operation of vehicle components and circuits is relayed to the appropriate module(s). Each module receives the same information about a component or circuit as the other modules do. This significantly reduces the complexity of the wiring in the vehicle and the size of the wiring harnesses.

The Chrysler Collision Detection multiplex system (CCD bus) consists of a twisted pair of wires. These wires run from one module to another. They receive and deliver coded information between the modules. The information is coded to identify the message as well as the importance of the message. When there are multiple messages trying to access the CCD bus at one time, the code determines the message that has the highest priority, which is then allowed to access the bus first.

The two wires of the twisted pair that make up the CCD multiplex system called "bus (+)" (bus plus) and "bus (-)" (bus minus) respectively. Each wire has a measurable voltage level of roughly 2.5 volts. In order to maintain the 2.5 volts on each line and provide a means of transportation for the coded messages, there is a "voltage divider network". This network consists of some modules with bias and some with termination. Bias is the part of the voltage divider network that places both bus (+) and bus (-) at 2.5 volts. Termination in the circuitry is required to complete the voltage divider network and also provides some electromagnetic protection for the bus.

NOTE: COMMUNICATION OVER THE BUS IS ESSENTIAL TO THE PROPER OPERATION OF THE VEHICLE'S ON-BOARD DIAGNOSTIC SYSTEMS AND THE DRB. PROBLEMS WITH THE OPERATION OF THE BUS OR DRB MUST BE CORRECTED BEFORE PROCEEDING WITH DIAGNOSTIC TESTING.

Bus Failure Messages
Any of the following bus failure messages may be displayed.

Short to Battery - Either or both of the bus wires are shorted to the battery potential.

Short to 5 Volts - Either or both of the bus wires are shorted to a 5-volt potential.

Short to Ground - Either or both of the bus wires are shorted to ground or a specific ground may be open.

Bus (+) & Bus (-) Shorted Together - The two bus wires are shorted together.

No Termination - The bus system has lost connection with all of its terminators.

Bus Bias Level Too Low - Either of both of the bus wire potentials are significantly below their normal 2.5 volts.

Bus Bias Level Too High - Either of both of the bus wire potentials are significantly above their normal 2.5 volts.

No Bus Bias - The bus system has lost connection with all modules that provide bias.

Bus (+) Open - The bus (+) wire has lost connection with termination and/or bias.

Bus (-) Open - The bus (-) wire has lost connection with termination and/or bias.

Not receiving Bus Messages Correctly - The DRB cannot communicate over the bus and does not know why.

VEHICLE THEFT SECURITY SYSTEM
This passive system is designed to protect against theft. The vehicle theft security system (VTSS) is part of the body control module, which monitors vehicle hood, doors, liftgate, and ignition for unauthorized operation. The alarm activates by sounding the horn, flashing the headlamps, park and taillamps, and the VTSS indicator lamp, and providing an engine "no run" feature.

Passive arming occurs upon normal vehicle exit by turning the ignition OFF, opening the driver's door, locking the doors with the power lock, and closing the driver's door or locking the doors with RKE. Manual arming occurs by using the key to lock the doors after closing them. The indicator lamp in the information center will flash for 15 seconds, showing that arming is in progress. If no monitored systems are activated during this period, the system will arm. If the hood ajar switch is seen as closed circuit by the system, the indicator lamp will remain steadily lit during the arming process, although the system will still arm.

When something triggers the alarm, the system will signal the headlamps, park lamps, and horn for about 3 minutes.

Tamper Alert - If the horn sounds three times when either front door or the liftgate is unlocked, it means the alarm was activated. Check the vehicle for tampering.

Manual Override - The system will not arm if the doors are locked using the manual lock control (by hand) or if the locks are actuated by an inside occupant after the door is closed.

When an unauthorized entry into the vehicle occurs, the VTSS sends a message via the CCD bus to the powertrain control module that it is not OK to start the engine. The powertrain control module then zeroes out the pulse width to the fuel injectors after the engine has been started, thus shutting down the engine (start and stall condition). The engine will not start until the system is disarmed.

To verify the system, proceed as follows:
1. Open the driver's door.
2. Remove the ignition key (but keep it in hand).
3. Lock the doors with the power lock switch.
4. Close the driver's door.

NOTE: After the doors are closed, locking the doors with RKE will also arm the system.

NOTE: IF THE VTSS INDICATOR LAMP FLASHED, THE SYSTEM IS OPERATIONAL AND VERIFIED. IF NOT, THERE MAY BE A PROBLEM WITH THE SYSTEM.

System initialization is accomplished by:
1. Opening the hood to ensure the hood ajar circuit is closed.
2. Rotating the key in liftgate cylinder to unlock/ disarm position.

Arming/Disarming
Active arming occurs when the remote keyless entry transmitter is used to lock the vehicle doors, whether the doors are open or closed. If one or more doors are open, the arming sequence is completed only after all door are closed.

Passive disarming occurs upon normal vehicle entry (unlocking either front door or the liftgate with the key). This disarming also will halt the alarm once it has been activated.

Active disarming occurs when the remote keyless entry transmitter is used to unlock the vehicle doors. This disarming also will halt the alarm once it has been activated.

System Self-Test

NOTE: System self-test can be entered only with the DRB.

NOTE: A POWERTRAIN CONTROL MODULE FROM A VEHICLE EQUIPPED WITH A VEHICLE THEFT SECURITY SYSTEM CANNOT BE USED IN A VEHICLE THAT IS NOT EQUIPPED WITH A VEHICLE THEFT SECURITY SYSTEM.

If the VTSS indicator lamp comes on after ignition ON and stays on, the CCD bus communication with the powertrain control module possibly has been lost.

WIPER SYSTEM

Front
The front wiper system provide the driver with normal wipe (low and high speeds), intermittent wipe, wipe after wash, and pulse wipe functions. The driver selects the wiper function via a resistive multiplexed stalk switch mounted on the steering column. When the wiper is in the ON position and the ignition is turned OFF, the wiper will continue to run until it reaches its park position.

Other front wiper system features include:

Speed Sensitive Intermittent Wipe Mode - There are 6 individual delay times with minimum delay of 1/2 second to a maximum of 18 seconds. When the vehicle speed is under 10 mph, the delay time is doubled to provide a range time of from 1 second to 36 seconds.

Pulse Wipe - When the wiper is in the off position and the driver presses the wash button for more than 62 msec but less than 1/2 second, 1 wipe cycle in low speed mode will be provided.

Wipe After Wash Mode - When the driver presses the wash button for over 1/2 second and then releases it, the wiper will continue to run for 2 additional wipe cycles.

Rear
The rear wiper system provides the driver with continuous, intermittent, and wiper after wash functions. The driver selects the wiper function via a resistive multiplexed switch mounted in the HVAC control.