Chrysler 2005 Crossfire SRT6 Service Manual page 729

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*NO RESPONSE FROM UNIVERSAL GARAGE DOOR OPENER/TIRE PRESSURE MONITOR (CONTINUED)
6.
SCI TRANSMIT CIRCUIT OPEN
With the ignition off.
Measure the resistance of the SCI Transmit circuit from the UGDO/
TPM harness connector to the DLC.
Is the resistance below 5.0 ohms?
Yes >> Replace the Universal Garage Door Opener/Tire Pressure
Monitor. (Refer to 8 - ELECTRICAL/UNIVERSAL TRANS-
MITTER - REMOVAL).
Perform BODY VERIFICATION TEST.
No >> Repair the SCI Transmit circuit for an open.
Perform BODY VERIFICATION TEST.
7.
DISCONNECT MODULES
Note: The Instrument Cluster, Universal Garage Door Opener/Tire
Pressure Monitor, A/C Heater Control Module, and Power Top
Control Module (if equipped) all use the SCI Transmit circuit at
DLC cavity 15 to communicate with the DRB III . If one of these
modules keeps the SCI Transmit circuit artificially high or low, the
DRB III will not be able to communicate with any of the four
modules.
Note: Perform the following steps for each of the modules until
communication is restored with the other modules or until each
of the modules has been eliminated as the cause of the fault.
Turn the ignition off.
Disconnect each of the modules noted above, one at a time.
Turn the ignition on.
Using the DRB III , attempt to communicate with any of the three modules still connected.
Is the DRB III able to communicate with the module selected?
Yes >> Replace the module that was disconnected when communication was restored to the other two mod-
ules.
Perform BODY VERIFICATION TEST.
No >> Go to 8
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS 8E - 27