Chrysler Sebring, Stratus sedan, Sebring Convertible. Manual — part 55
Symptom:
*NO RESPONSE FROM BODY CONTROL MODULE
POSSIBLE CAUSES
OPEN GROUND CIRCUITS
BODY CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
NOTE: Make sure the DRB can communicate with other modules before
proceeding, if not refer to the PCI Bus Communication Failure symptom.
Turn the ignition off.
Disconnect the BCM C1, C2 and C3 harness connectors.
NOTE: Ensure all lights are turned off.
Using a 12-volt test light connected to 12-volts, probe each ground circuit.
Is the test light illuminated for each circuit?
All
Yes
→ Replace the Body Control Module in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Ground circuit(s) for an open.
Perform BODY VERIFICATION TEST - VER 1.
205
COMMUNICATION
Symptom:
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE
POSSIBLE CAUSES
NO RESPONSE FROM CAB
CHECK JUNCTION BLOCK FUSES
GROUND CIRCUIT OPEN
OPEN FUSED IGNITION SWITCH OUTPUT CIRCUIT
CONTROLLER ANTILOCK BRAKE (CAB) MODULE
PCI BUS CIRCUIT OPEN
BODY CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
Note: As soon as one or more module communicates with the DRB, answer
the question.
With the DRB, attempt to communicate with the Airbag Control Module.
With the DRB, attempt to communicate with the Body Control Module (BCM).
Was the DRB able to I/D or establish communications with either of the modules?
All
Yes
→ Go To 2
No
→ Refer to the Communications category and perform the symptom
PCI Bus Communication Failure.
Perform ABS VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Inspect all junction block fuses.
Are any of the fuses open?
All
Yes
→ Check the Fused Ignition Switch Output circuit for a short to
ground, refer to the wiring diagrams located in the service
information. Replace any open Fuses.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the CAB harness connector.
Using a 12-volt test light connected to 12-volts, probe both ground circuits.
Is the test light illuminated for both circuits?
All
Yes
→ Go To 4
No
→ Repair the ground circuit(s) for an open.
Perform ABS VERIFICATION TEST - VER 1.
206
COMMUNICATION
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the CAB harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
Output circuit.
Is the test light illuminated?
All
Yes
→ Go To 5
No
→ Repair the Fused Ignition Switch Output circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
5
Note: Ensure there is PCI Bus communication with other modules on the
vehicle before proceeding. If not, refer to the symptom list from the menu
and repair as necessary.
Disconnect the CAB harness connector.
Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and
black test probes.
Connect the scope input cable to the channel one connector on the DRB. Attach the
red and black leads and the cable to probe adapter to the scope input cable.
With the DRBIII
t, select Pep Module Tools.
Select lab scope.
Select Live Data.
Select 12 volt square wave.
Press F2 for Scope.
Press F2 and use the down arrow to set voltage range to 20 volts. Press F2 again
when complete.
Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus
circuit in the CAB connector.
Turn the ignition on.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?
All
Yes
→ Replace the Controller Antilock Brake (CAB) in accordance with
the service information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 6
6
Turn the ignition off.
Disconnect the CAB harness connector.
Disconnect the BCM C3 harness connector.
Measure the resistance of the PCI bus circuit between the CAB connector and the
BCM C3 connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Body Control Module in accordance with the service
information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Repair the PCI Bus circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
207
COMMUNICATION
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE —
Continued
Symptom:
*NO RESPONSE FROM INSTRUMENT CLUSTER
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE BCM
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
FUSED B+ CIRCUIT OPEN
GROUND CIRCUIT OPEN
INSTRUMENT CLUSTER
PCI BUS CIRCUIT OPEN
BODY CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, enter Body then Body Computer.
Was the DRB able to I/D or communicate with the BCM?
All
Yes
→ Go To 2
No
→ Refer to the symptom list for problems related to no communica-
tion with the BCM.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Instrument Cluster harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
Output circuit.
Is the test light illuminated?
All
Yes
→ Go To 3
No
→ Repair the Fused Ignition Switch Output circuit for an open or
short. Refer to the wiring diagrams in the service information.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition off.
Disconnect the Instrument Cluster harness connector.
Using a 12-volt test light connected to ground, probe the Fused B+ circuit.
Is the test light illuminated?
All
Yes
→ Go To 4
No
→ Repair the Fused B+ circuit for an open or short. Refer to the
wiring diagrams in the service information.
Perform BODY VERIFICATION TEST - VER 1.
208
COMMUNICATION
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