Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 371
3.
(Z910) GROUND CIRCUIT OPEN AT DLC
Using a 12-volt test light connected to 12-volts, check each (Z910)
ground circuit.
Does the test light illuminate brightly for each circuit?
Yes
>> Go To 4
No
>> Repair the (Z910) ground circuit for an open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
4.
GROUND CIRCUITS OPEN AT FCM C1 CONNECTOR
Disconnect the FCM C1 harness connector.
Using a 12-volt test light connected to 12-volts, check each ground cir-
cuit.
Does the test light illuminate brightly for each circuit?
Yes
>> Go To 5
No
>> Repair the ground circuit for an open. Inspect the connector
for damage.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
5.
GROUND CIRCUITS OPEN AT FCM PDM CONNECTOR
Remove the FCM from the PDM.
Using a 12-volt test light connected to 12-volts, check each ground cir-
cuit.
Does the test light illuminate brightly for each circuit?
Yes
>> Go To 6
No
>> Repair the ground circuit for an open. Inspect the connector
for damage.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
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6.
FUSED B(+) CIRCUITS OPEN AT FCM PDM CONNECTOR
Using a 12-volt test light connected to ground, check each Fused B(+)
circuit.
Does the test light illuminate brightly for each circuit?
Yes
>> Replace and program the Front Control Module in accor-
dance with the service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
No
>> Repair the Fused B(+) circuit for an open. Inspect the con-
nector for damage.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
LX
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
8E - 175
*NO RESPONSE FROM HFM (HANDS FREE MODULE)
For a complete wiring diagram Refer to Section 8W.
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Possible Causes
(A300) FUSED B(+) CIRCUIT OPEN OR SHORTED
(Z909) GROUND CIRCUIT OPEN
(D55) AND (D54) CAN B BUS CIRCUITS OPEN
HANDS FREE MODULE
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.
With the scan tool, select ECU View.
NOTE: A red X will be next to the module that is not communicating, indicating that the module is not active
on the Bus network. A green check indicates that the module is active on the Bus network.
Does the scan tool display a red X next to the module?
Yes
>> Go To 2
No
>> The no response condition is not present at this time. Using the wiring diagram/schematic as a guide,
inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness con-
nectors for broken, bent, pushed out, and corroded terminals.
2.
(A300) FUSED B(+) CIRCUIT OPEN OR SHORTED
Turn the ignition off.
Disconnect the Hands Free Module harness connector.
Using a 12-volt test light connected to ground, check the (A300) Fused
B(+) circuit.
Does the test light illuminate brightly?
Yes
>> Go To 3
No
>> Repair the (A300) Fused B(+) circuit for an open or short.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
LX
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
8E - 177
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