Chrysler PT Cruiser. Manual — part 53
TEST
ACTION
APPLICABILITY
6
Turn the ignition off.
Disconnect the negative battery cable.
Using a ohmmeter, connect one end to the PCI Bus circuit at the DLC, and the other
end to ground.
While monitoring the ohmmeter, disconnect each module the vehicle is equipped with
one at a time.
NOTE: Total bus resistance to ground thru all of the modules is typically
between 350 to 1000 ohms. The more modules on the bus, the lower the total
bus resistance will be.
Is the resistance below 150.0 ohms with all the modules disconnected?
All
Yes
→ Repair the PCI Bus circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the module that when disconnected the short to ground
was eliminated.
Perform BODY VERIFICATION TEST - VER 1.
199
COMMUNICATION
*PCI BUS COMMUNICATION FAILURE —
Continued
Symptom List:
ABS INDICATOR CIRCUIT OPEN
AIRBAG INDICATOR CIRCUIT OPEN
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be ABS INDICATOR CIRCUIT
OPEN.
POSSIBLE CAUSES
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
NOTE: The Instrument Cluster performs internal tests on the ABS and
Airbag indicators each ignition cycle. These indicator LEDs are not replace-
able.
With the DRBIII
t, erase DTCs.
Cycle the ignition and wait approximately 1 minute.
Did the ABS or Airbag indicator DTC reset?
All
Yes
→ Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
200
INSTRUMENT CLUSTER
Symptom List:
ABS MESSAGE NOT RECEIVED
ACM MESSAGE NOT RECEIVED
EATX MESSAGE NOT RECEIVED
NO PCI TRANSMISSION
SBEC MESSAGE NOT RECEIVED
SKIM MESSAGE NOT RECEIVED
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be ABS MESSAGE NOT RECEIVED.
POSSIBLE CAUSES
BUS MESSAGE NOT RECEIVED DTC PRESENT
INTERMITTENT CONDITION
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, attempt to communicate with the ABS, ACM, EATX, SBEC, or
SKIM module.
Was the DRBIII
t able to I/D or communicate with the Module in question?
All
Yes
→ Go To 2
No
→ Refer to Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
2
With the DRBIII
t, erase DTCs.
Cycle the ignition, wait approximately 1 minute.
With the DRBIII
t, read DTCs.
Did the DTC reset?
All
Yes
→ Visually inspect the Instrument Cluster connector and wiring
harness. If OK, replace the Instrument Cluster in accordance
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ The condition is not present at this time. Monitor DRBIIIt
parameters while wiggling the related wire harness. Visually
inspect the related wiring harness, connectors, and connector
terminals.
Perform BODY VERIFICATION TEST - VER 1.
201
INSTRUMENT CLUSTER
Symptom:
EATX MESSAGE MISMATCH
POSSIBLE CAUSES
EATX BUS MESSAGE DTC PRESENT
INTERMITTENT CONDITION
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, read DTCs.
Does the DRBIII
t display 9EATX Bus Message Not Received9?
All
Yes
→ Refer to Communication for the related symptom.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
202
INSTRUMENT CLUSTER
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