PT Cruiser L4-2.4L Turbo VIN G (2004)
Airbag diagnostic trouble codes consist of active and stored codes. If more than one code exists, diagnostic priority should be given to the active
codes. Each diagnostic trouble code is diagnosed by following a specific testing procedure. The diagnostic test procedures contain step-by-step
instructions for determining the cause of the trouble codes. It is not necessary to perform all of the tests in this book to diagnose an individual code.
Active diagnostic trouble codes for the airbag system are not permanent and will change the moment the reason for the code is corrected. In certain
test procedures, diagnostic trouble codes are used as a diagnostic tool.
ACTIVE CODES
The code becomes active as soon as the malfunction is detected or key-off, whichever occurs first. An active trouble code indicates an on-going
malfunction or has occurred in that ignition cycle. This means that the malfunction is currently there every time the control module checks that
circuit/function. It is impossible to erase an active code; active codes automatically erase by themselves when the reason for the code has been
corrected or not present in the subsequent ignition cycle. With the exception of the warning lamp trouble codes or malfunctions, when a
malfunction is detected, the airbag lamp remains lit for a minimum of 12 seconds or as long as the malfunction is present.
STORED CODES
Airbag codes are automatically stored in the ACM's memory as soon as the malfunction is detected. A "stored" code indicates there was an active
code present at some time. However, the code currently may not be present as an active code. When a trouble code occurs, the airbag warning
lamp illuminates for 12 seconds minimum (even if the problem existed for less than 12 seconds). The code is stored, along with the time in
minutes it was active, and the number of times the ignition has been cycled since the problem was last detected. The minimum time shown for any
code will be one minute, even if the code was actually present for less than one minute. Thus, the time shown for a code that was present for two
minutes 13 seconds, for example, would be three minutes. If a malfunction is detected a diagnostic trouble code is stored and will remain stored
as long as the malfunction exists. When and if the malfunction ceases to exist, an ignition cycle count will be initiated for that code. If the ignition
cycle count reaches 100 without a reoccurrence of the same malfunction, the diagnostic trouble code is erased and that ignition cycle counter is
reset to zero. If the malfunction reoccurs before the count reaches 100, then the ignition cycle counter will be reset and the diagnostic trouble code
will continue to be a stored code.
If a malfunction is not active while performing a diagnostic test, the active code diagnostic test will not locate the source or the condition. In this
case, the stored code can indicate an area to inspect. The following procedure may uncover a malfunction that is difficult to locate:
WARNING: TO AVOID PERSONAL INJURY OR DEATH, MAINTAIN A SAFE DISTANCE FROM ALL AIRBAGS WHILE
PERFORMING THE FOLLOWING INSPECTION:
If no obvious problems are found:
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Erase the stored codes
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Place the ignition in the Run position
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Wiggle the wire harness and connectors
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Rotate the steering wheel from stop to stop
Audio System
The audio system on the 2004 PT consists of a radio that communicates over the PCI Bus. Each radio system comes equipped with a standard premium 6
speaker system. The speakers are located in the instrument panel, the front doors and the rear "D" pillars. The instrument panel speakers are a tweeter
type speaker for high frequency. The front door speakers are a woofer/midrange type speaker. The rear "D" pillar speakers are a full range type speaker.
If one of the speaker 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 the DRBIII(R) can display.
NAVIGATION RADIO
The optional navigation radio system receives GPS signals from up to eight satellites to display the position and direction of the vehicle. Map
information is supplied through a DVD-ROM. An electronic gyrosensor and the vehicle's speed sensor enable the system to display the present vehicle
position even in locations where GPS signals may be blocked.
When a destination is selected, the navigation system uses information from the map to quickly calculate a route. As the vehicle is driven along the
chosen route, the operator is guided with pictorial displays and voice prompts.
SATELLITE RADIO (SDARS)
To use the satellite radio, the radio must be in satellite mode. The satellite antenna must have an unobstructed view of the satellite. The vehicle must
be outside to receive proper reception. Poor reception may be experienced in large down town areas where tall buildings are present. The satellite
network is still under development, and this could be the cause of poor reception in certain areas. Use a known good system to verify network
performance in these areas.
Once in satellite mode, the radio head is used to change stations. The Radio must be in Satellite mode to communicate to the Satellite Receiver
Module with the DRBIII(R). The Radio head communicates to the Satellite Receiver Module via the PCI bus and the private Audio bus. The Audio
bus functions just like the PCI bus, but its use is restricted to the Radio and the Satellite Receiver Module.
The Satellite Receiver Module processes signals it receives from the satellite antenna. That information is then sent to the Radio where it is processed
and sent out to the speakers. The Satellite Receiver Module has the ability to detect and store fault code information, which may be retrieved with the
DRBIII(R).
