Grand Voyager L4-2.4L DOHC (1996)
The PRNDL (VF, if equipped) and odometer/trip displays work when the ignition is in the "off" (unlock), "run", or "start" positions; all other MIC
features work only when the ignition is in the "run" position.
On transition of the ignition from the "off" to the "run" position, a bulb check is performed. This consists of activating all CCD-controlled indicator
lamps and all VF display segments for approximately 2-4 seconds. The PRNDL bulb check is aborted if the gear selector is moved from the PARK
position, or if the engine exceeds 450 rpm.
Positive Temperature Coefficient (PTC)
The wiring to several electrical systems on this vehicle will be protected using PTC (Positive Temperature Coefficient) devices.
The PTCs are located in the junction block and act as non-replaceable resettable fuses.
An overload such as a short circuit will cause the device to trip and limit the current to less than an amp, protecting the wire.
To reset the device all current must be removed (similar to a remote reset circuit breaker).
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With current removed the PTC will automatically reset in about 20 seconds.
Power Door Lock System
When the BCM receives an input for a lock request (door lock switch, RKE, or door key cylinder switch (only with VTSS)), it will ground the
lock relay coil for a specified amount of time ranging from 62 msec to 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.
A new feature for this vehicle is the use of PTC's (Positive Temperature Coefficient devices) to protect the door lock circuits. When a short in one
of the doors occurs, it also will cause one of more of the other doors to become inoperative.
Other power door lock features:
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 DRBIII or the MDS machine. 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 DRBIII, the Mopar Diagnostic System (MDS), 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.
Radio System
NOTE: Vehicle is equipped with an Ignition Off Draw (IOD) fuse in the power distribution center located in the engine compartment. After the IOD
fuse or battery has been disconnected, the radio station sets and clock will require resetting.
There are three radios available for the minivan:
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The base radio is an AM/FM stereo radio with four speaker locations.
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There is an AM/FM cassette radio with four speaker locations that has CCD communication capabilities.
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The Infinity Gold radio is an AM/FM compact disc stereo tuner/player. It has eight speaker locations.
The radio is available for the first time with an optional cassette deck built in. This allows the flexibility of choosing to play either a cassette tape
or a compact disc all from the same unit. The radio has the capability of communicating on the CCD bus and allowing diagnostics with the DRB.
The Infinity Gold system uses bi-amplified speakers at the front doors and rear quarter panel locations. This means that there is an amplifier
located at each of the four primary speaker locations.
