Chrysler 300M 2002 Service Manual page 1896

*PCI BUS COMMUNICATION FAILURE —
TEST
3 Turn the ignition off.
Disconnect the BCM C1 harness connector.
Disconnect the DRB from the Data Link Connector (DLC).
Measure the resistance of the PCI Bus circuit between the Data Link Connector
(DLC) and the BCM C1 connector.
Is the resistance below 5.0 ohms?
Yes → Go To 4
→ Repair the PCI Bus circuit for an open.
No
4 NOTE: Reconnect the BCM C1 harness connector.
Turn the ignition on.
Measure the voltage of the PCI Bus circuit at the Data Link Connector (DLC).
Is the voltage above 4.0 volts?
Yes → Go To 5
→ Go To 7
No
5 Note: Determine which modules this vehicle is equipped with before begin-
ning.
Turn the ignition off.
Disconnect the BCM harness connectors and remove the Body Control Module from
the Junction Block.
Turn the ignition on.
Measure the voltage of each PCI Bus circuit at the BCM C1, C3, C4 connectors and
at the Junction Block Body Control Module connector cavity 10.
Is the voltage steadily above 4.0 volts for any measurement?
Yes → Go To 6
→ Replace the Body Control Module in accordance with the service
No
6 Turn the ignition off.
Disconnect the module that corresponds to the PCI Bus circuit that measured
steadily above 4.0 volts.
Turn the ignition on.
NOTE: If the PCI Bus circuit for the Memory Heated Seat/Mirror Module
was above 4.0 volts and is equipped with side airbags, disconnect each
module one at a time.
Measure the voltage of the PCI Bus circuit that previously measured above 4.0 volts.
Is the voltage steadily above 4.0 volts with the module disconnected?
Yes → Repair the PCI Bus circuit that measured over 4.0 volts for a
→ Replace the module that caused the short to voltage on the PCI
No
ACTION
Perform BODY VERIFICATION TEST - VER 1.
information.
Perform BODY VERIFICATION TEST - VER 1.
short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
Bus circuit.
Perform BODY VERIFICATION TEST - VER 1.
Continued
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COMMUNICATION
APPLICABILITY
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