PT Cruiser L4-2.4L Turbo VIN G (2004)
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 within this manual, 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. 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.
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.
An "Interrogate Right SIACM or Interrogate left SIACM" diagnostic trouble code indicates an active trouble code in the respective module.
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, although another active code could be.
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 procedure, the active code diagnostic test will not locate the source of the problem.
In this case, the stored code can indicate an area to inspect.
If no obvious problems are found, erase stored codes, and with the ignition "ON" wiggle the wire harness and connectors, rotate the steering wheel
from stop to stop. Recheck for codes periodically as you work through the system. This procedure may uncover a malfunction that is difficult to
locate.
Occupant Restraint System Trouble Codes
The Occupant Restraint System contains three modules ACM, Left SIACM and Right SIACM (If equipped with SIACM) that store active and
stored DTC's. Some DTC's will require replacing the implicated module. Other DTC's will require some Diagnostic procedures to determine
defective components.
