Chrysler Pacifica. Manual — part 94
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the BCM C1 and C2 harness connectors.
Using a 12-volt test light connected to 12-volts, probe both Ground circuits.
Is the test light illuminated for each circuit?
All
Yes
→ Go To 5
No
→ Repair the Ground circuit(s) for an open.
Perform BODY 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 BCM C3 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 BCM 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 Body Control Module in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the PCI Bus circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
373
COMMUNICATION
*NO RESPONSE FROM BODY CONTROL MODULE —
Continued
Symptom:
*NO RESPONSE FROM DRIVER DOOR MODULE
POSSIBLE CAUSES
OPEN FUSED DOOR NODE RELAY OUTPUT CIRCUIT
OPEN GROUND CIRCUIT
OPEN PCI BUS CIRCUIT
DRIVER DOOR MODULE
TEST
ACTION
APPLICABILITY
1
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.
Turn the ignition off.
Disconnect the Driver Door Module C1 harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Fused Door Node Relay
Output circuit.
Is the test light illuminated?
All
Yes
→ Go To 2
No
→ Repair the Fused Door Node Relay Output circuit for an open or
short, refer to the wiring diagrams in the service information.
Perform BODY VERIFICATION TEST - VER 1.
2
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.
Turn the ignition off.
Disconnect the Driver Door Module C1 harness connector.
Using a 12-volt test light connected to 12-volts, probe each ground circuit.
Is the test light illuminated for each circuit?
All
Yes
→ Go To 3
No
→ Repair the ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
374
COMMUNICATION
TEST
ACTION
APPLICABILITY
3
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 Driver Door Module C3 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 Driver Door Module 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
→ Go To 4
No
→ Repair the PCI Bus circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4
If there are no possible causes remaining, view repair.
All
Repair
Replace the Driver Door Module in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
375
COMMUNICATION
*NO RESPONSE FROM DRIVER DOOR MODULE —
Continued
Symptom:
*NO RESPONSE FROM HANDS FREE MODULE
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE BCM
GROUND CIRCUIT OPEN
FUSED B(+) CIRCUIT OPEN
FUSED ACCESSORY RELAY OUTPUT CIRCUIT OPEN
OPEN PCI BUS CIRCUIT
HANDS FREE MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, attempt to communicate with the BCM.
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 Hands Free Module harness connector.
Using a 12-volt test light connected to 12-volts, probe the ground circuit.
Is the test light illuminated?
All
Yes
→ Go To 3
No
→ Repair the ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition off.
Disconnect the Hands Free Module 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
→ Check IPM fuse #48 for an open. If OK, repair the Fused B+
circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the Hands Free Module harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Fused Accessory Relay
Output circuit.
Is the test light illuminated?
All
Yes
→ Go To 5
No
→ Check IPM fuse #25 for an open. If OK, repair the Fused
Accessory Relay Output circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
376
COMMUNICATION
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