Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 786
3.
(D55) CAN B BUS (+) CIRCUIT OPEN
Turn the ignition off.
Disconnect the negative battery cable.
Disconnect the Intrusion Transceiver Module connector.
Disconnect the Front Control Module C1 connector.
Measure the resistance of the (D55) CAN B Bus (+) circuit between the
Front Control Module C1 connector and the Intrusion Transceiver Mod-
ule connector.
Is the resistance below 2.0 ohms?
Yes
>> Go To 4
No
>> Repair the (D55) CAN B Bus (+) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
4.
(D54) CAN B BUS (–) CIRCUIT OPEN
Measure the resistance of the (D54) CAN B Bus (–) circuit between the
Front Control Module C1 connector and the Intrusion Transceiver Mod-
ule connector.
Is the resistance below 2.0 ohms?
Yes
>> Replace the Intrusion Transceiver Module in accordance
with the service information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
No
>> Repair the (D54) CAN B Bus (–) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
8Q - 112
VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
LX
U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0146-LOST COMMUNICATION WITH CENTRAL GATEWAY
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) and perform the
U0141-Lost Communication With Front Control Module test for the diagnostic test procedure.
U0151-LOST COMMUNICATION WITH OCCUPANT RESTRAINT CONTROLLER
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0154-LOST COMMUNICATION WITH OCCUPANT CLASSIFICATION MODULE
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0155-LOST COMMUNICATION WITH CLUSTER/CCN
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
LX
VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
8Q - 113
U110D-LOST COMMUNICATION WITH SECURITY SIREN
For a complete wiring diagram Refer to Section 8W
8Q - 114
VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
LX
•
When Monitored:
Continuously while the VTSS is armed.
•
Set Condition:
If the Intrusion Transceiver Module does not receive messages from the Siren.
Possible Causes
INTERMITTENT CONDITION
(A117) FUSED B(+) (I.O.D.) CIRCUIT OPEN
(Z904) GROUND CIRCUIT OPEN
(D96) SIREN SIGNAL CONTROL CIRCUIT SHORT TO BATTERY
(D96) SIREN SIGNAL CONTROL CIRCUIT OPEN
(D96) SIREN SIGNAL CONTROL CIRCUIT SHORT TO GROUND
SIREN
INTRUSION TRANSCEIVER MODULE
Diagnostic Test
1.
INTERMITTENT DTC
With the scan tool, erase the current Intrusion Transceiver Module DTC’s.
Turn the ignition off.
Arm the VTSS and wait 1 minute.
Disarm the VTSS and turn the ignition on.
Does the scan tool display the same DTC?
Yes
>> Go To 2
No
>> The condition that caused this symptom is currently not present. Inspect the related wiring harness for
a possible intermittent condition. Look for any chafed, pierced, pinched or partially broken wires.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE)
2.
(A117) FUSED B(+) (I.O.D.) CIRCUIT OPEN
Gain access to the VTSS Siren.
Disconnect the Siren connector.
Using a 12-volt test light connected to ground, check the (A117) Fused
B(+) (I.O.D.) circuit in the Siren connector.
Does the test light illuminate brightly?
Yes
>> Go To 3
No
>> Repair the (A117) Fused B(+) (I.O.D.) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
LX
VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
8Q - 115
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