Chrysler PT Cruiser 2001 Service Manual Supplement page 2504

COMMUNICATION
Symptom:
*PCI BUS COMMUNICATION FAILURE
MODULE SHORT TO GROUND
MODULE SHORT TO VOLTAGE
WIRING HARNESS INTERMITTENT
OPEN PCI BUS CIRCUIT AT THE DATA LINK CONNECTOR (DLC)
PCI BUS CIRCUIT SHORTED TO VOLTAGE
PCI BUS CIRCUIT SHORTED TO GROUND
TEST
1 Note: Determine which modules this vehicle is equipped with before begin-
ning.
Note: When attempting to communicate with any of the modules on this
vehicle, the DRB will display 1 of 2 different communication errors: a NO
RESPONSE message or a BUS +/- SIGNALS OPEN message.
Turn the ignition on.
Using the DRB, attempt to communicate with the following control modules:
Airbag Control Module
SKIM (SENTRY KEY IMMOBILIZER)
RKE (REMOTE KEYLESS ENTRY)
MIC (INSTRUMENT CLUSTER)
Antilock Brake Control module
Was the DRB able to communicate with one or more Module(s)?
Yes → Go To 2
No
2 Turn the ignition off.
Note: Visually inspect the related wiring harness. Look for any chafed,
pierced, pinched, or partially broken wires.
Note: Visually inspect the related wire harness connectors. Look for broken,
bent, pushed out, or corroded terminals.
Note: If the DRB can not communicate with a single module, refer to the
category list for the related symptom.
Were any problems found?
Yes → Repair wiring harness/connectors as necessary.
No
POSSIBLE CAUSES
ACTION
→ Go To 3
Perform BODY VERIFICATION TEST - VER 1.
→ Test Complete.
44
APPLICABILITY
All
All