Electrical Systems - Feature Changes
NO: 08-34-98 Rev. BGROUP: Electrical
DATE: Oct. 9, 1998
SUBJECT:
1999 Electrical Feature
Changes
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 08-34-98 REV. A, DATED JUL. 24, 1998, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE A CHANGE TO THE REMOTE KEYLESS ENTRY (RKE) KEY FOB/TRANSMITTER PROGRAMMING PROCEDURE AND ADDITIONAL INFORMATION ABOUT THE HEAT VENTILATION AIR CONDITIONING (HVAC) CONTROL HEAD AND POWER DISTRIBUTION CENTER (PDC).
MODELS:
1999 (NS) Town & Country/Caravan/Voyager
DISCUSSION:
The HVAC control head, "gold dust" instrument cluster, and remote radio control features were introduced in March of 1998 on the 1999 Town & Country Limited. All other features listed entered vehicle production July 2, 1998 (MDH 0702XX).
Ignition Off Draw (IOD) Fuse Installation
Previously the IOD fuse was taped under the PDC cover. Starting with the 1999 model year, the IOD fuse will be located in a spare IOD fuse holder cavity next to the IOD fuse location. Prior to the vehicle being delivered to the customer, the fuse from the spare cavity must be installed into the IOD fuse slot in order for the M1 feed to be active.
Remote Radio Controls (RDZ)
The Body Control Module (BCM) monitors steering wheel radio switch status (volume up/down, seek up/down, and preset station change). The BCM then communicates this information to the radio over the CCD bus.
Remote Keyless Entry (RKE) Peanut Key Fob/Transmitter
A new key fob and RKE module are used. Pinout for the RKE module is the same as 1998. **RKE and RKE programming is inhibited when the gearshift lever is not in Park.** The system assures no duplicate transmissions. This prevents unauthorized individuals from recording the transmitted signal and coming back later, playing back the "stolen" signal and thus gaining access to the vehicle. The key fob/transmitter programming procedure has changed and is as follows, **if an already programmed key fob/transmitter is available, otherwise a scan tool (DRBIII(R)) must be used to access the programming mode**
1. **With the transmission in Park**, turn the ignition switch to the ON position.
2. Press and hold the Unlock button **of an already programmed key fob/transmitter** for a minimum of **5** seconds to a maximum of 10 seconds. During the Unlock button **5**-10 second time frame press the Panic button, then release both buttons at the same time. The RKE system is now in the program mode for **30 seconds. A short chime will come from the BCM indicating the programming mode has been activated.**
3. Program the key fob/transmitter one by pressing and releasing the lock and unlock buttons at the same time, then press and release any button on the key fob/transmitter. **A short chime will sound indicating a key fob/transmitter has been successfully programmed.**
4. Perform step 3 on **any remaining key fob/transmitters within the 30 second** time frame.
5. The RKE system will exit the programming mode after **30 seconds** or if the ignition is turned OFF. **A chime will sound after 30 seconds has elapsed or if the ignition switch is turned OFF indicating the programming mode has been exited.**
HVAC Control Head
The HVAC control head communicates on the CCD bus and receives the A/C head pressure message from the Powertrain Control Module (PCM).
The control head automatically resets to fresh air at ignition ON to help reduce odor. Vehicles are shipped from the assembly plant with the recirculation control programmed to cancel the recirculation mode when the ignition key is turned OFF and will reset to fresh/outside air mode when the ignition key is turned ON. The frequent use of outside air helps to keep odors from building up within the A/C-heater housing. It is recommended the recirculation mode be used as little as possible, especially in humid climates. For vehicle operators in hot and dry climates or people who are allergic to pollen and find frequent use of the recirculation mode necessary, the recirculation control can be programmed to not automatically reset to the fresh/outside air mode by using the following procedure:
1. Start the engine and turn the A/C blower switch to any position other than the OFF or LOW speed position.
2. Set the mode control to panel/face.
3. Turn the ignition key to the OFF position.
4. Depress and hold the recirculation button in.
5. Start the engine, continue to hold the recirculation button in.
6. The recirculation indicator light will flash repeatedly, when the light stops flashing release the recirculation button. Programming is now complete. If the light stays ON, the system will "remember" the recirculation mode when the ignition is turned ON. If the light goes OFF, the system will reset to fresh/outside air each time the ignition is turned ON.
The HVAC control head has an automatic calibration feature **which activates after the ignition is turned ON and if the control head determines via the CCD bus, the VIN is different than the VIN the control head previously detected, such as when a new control head is being installed or a control head is being swapped from one vehicle to another.** The automatic calibration process takes about 45 seconds to complete.
Rear Wiper CCD Driven
The HVAC control head communicates rear wiper switch status over the CCD bus to the Body Control Module (BCM).
Autostick Available On Dodge ES
The Autostick feature allows the driver to control the vehicles transmission upshifts and downshifts by toggling a switch located near the end of the gearshift lever. The system also incorporates an Overdrive (O/D) OFF button at the end of the gearshift lever that allows the driver to switch between Overdrive ON and Overdrive OFF **when the gearshift lever is in the "D" position.**
Instrument Clusters
Autostick Cluster
A unique cluster has been introduced to support the new Dodge ES model with Autostick. The cluster content and appearance is the same as the premium cluster (shown in the owners manual) except for the unique gear select indicator display. The gear select indicator display changes from the typical "P-R-N-D-3-L" to "P-R-N-D-1-2-3-4" for Autostick.
Town & Country Limited Cluster
A unique cluster has been introduced to support the new Chrysler Town & Country Limited model. The cluster content is the same as the premium cluster except for its unique appearance. The cluster offers a "gold dust" gauge appearance with red gauge pointers during daylight conditions. At night, the numbers, letters and/or symbols are illuminated using traditional blue-green lighting.
Electrical Connector
New Cluster Wiring Connector
A new 13-way connector system is used for all NS instrument clusters. The connector on the wire harness side includes a Connector Position Assurance (CPA) secondary latch (orange), which assures the connector will not become dislodged (or loose) when seated properly. The connector includes blade type terminals, which offer greater strength and reduces the potential for bent terminals.
NOTE:
TO DISCONNECT THE WIRE HARNESS CONNECTOR FROM THE CLUSTER THE CPA LATCH ON THE WIRING HARNESS CONNECTOR MUST BE UNLOCKED BEFORE DEPRESSING THE RELEASE LATCH.
New Connectors for All Door and Rear Quarter Speakers
There are new speaker connectors for all door and rear quarter speakers. The new connectors provide a direct connect (versus pigtail). This improves the manufacturing process and reduces risk of rattles.
Fog Lamps
A direct wiring connection to fog lamps (no pigtail) is now used.
Ignition Coil
The primary connector has been changed from a pin/sleeve type to a blade type connector for improved reliability.
EATX Transmission Range Sensor (TRS)
A new blade type TRS connector **will be used for 1999 as a running change. Early production 1999 vehicles will use the 1998 type sensor with a jumper harness.**
O2 Sensor
This includes a gold terminal and an isolated return signal to the PCM (pin 27). This change improves reliability.
Wiper Motor
The connector is changed from a 10-way to a 4-way.
Stamped Battery Cable Terminal
The new battery cable terminal requires less torque. The new torque specification is 3.3 - 4.5 Nm (30 - 40 in. lbs.).
BCM Wiring Change
Air Bag Warning Chime
The BCM will sound a single chime if both of the following conditions are met:
1. Ignition has been in run/start position greater than 10 seconds.
2. The air bag lamp status message (sent from the air bag module) indicates lamp on.
In order for the chime to be able to sound again (reset monitor), the BCM must receive input indicating the vehicle speed is zero and the air bag lamp is off.
**Power Distribution Center (PDC)
As a running change, expected to take place the first week of January 1999, a revised PDC will go into vehicle production. Although some fuse, relay, and connector positions will be different, the pin-outs and diagnostics for the individual connectors/components will remain the same.**
POLICY: Information Only