Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1822
U0155–LOST COMMUNICATION WITH CLUSTER / CCN
For a complete wiring diagram Refer to Section 8W.
Diagnostic Test
1.
LOST COMMUNICATION WITH INSTRUMENT CLUSTER (CCN)
The Steering Control Module (SCM) is reporting that network communication has been lost with the Instrument
Cluster (CCN).
View repair.
Repair
Refer to 8 — ELECTRICAL/ELECTRONIC CONTROL MODULES — DIAGNOSIS AND TESTING for
diagnostic procedures and for further possible causes.
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COLUMN ELECTRICAL DIAGNOSIS
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U0212–LOST COMMUNICATION WITH STEERING COLUMN CONTROL MODULE
For a complete wiring diagram Refer to Section 8W.
Diagnostic Test
1.
LOST COMMUNICATION WITH STEERING COLUMN CONTROL MODULE
The Memory Seat Module (MSM) is reporting that network communication has been lost with the Steering Control
Module (SCM).
View repair.
Repair
Refer to 8 — ELECTRICAL/ELECTRONIC CONTROL MODULES — DIAGNOSIS AND TESTING for
diagnostic procedures and for further possible causes.
LX
COLUMN ELECTRICAL DIAGNOSIS
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U1109–LOST COMMUNICATION WITH LIN STEERING WHEEL CONTROLS
For a complete wiring diagram Refer to Section 8W.
Theory of Operation
The Steering Wheel Control Switch status is transferred to the Steering Control Module (SCM) by way of the LIN
bus, a serial sub-bus. The SCM converts the data to CAN and sends the messages to the corresponding module(s)
on the bus.
•
When Monitored:
Continuously with the ignition on.
•
Set Condition:
There is no response from the Steering Column Control (LIN) Switch for 10 ms.
Possible Causes
INTERMITTENT LOST COMMUNICATION WITH LIN STEERING WHEEL CONTROLS DTC
LIN BUS WIRING AND CONNECTORS
CLOCKSPRING
RIGHT STEERING SWITCH
STEERING CONTROL MODULE (SCM)
Diagnostic Test
1.
DTC IS ACTIVE
NOTE: If P0562–BATTERY VOLTAGE LOW or P0563–BATTERY VOLTAGE HIGH is set along with this DTC,
diagnose the battery voltage DTC first.
Ignition on, engine not running.
With the Scan Tool, select View DTCs in the Steering Control Module.
Is the DTC status Active at this time?
Yes
>> Go to 2
No
>> Go to 6
2.
LIN BUS WIRING AND CONNECTORS
Turn the ignition off.
Remove the Driver Airbag in accordance with the Service Information.
NOTE: Before proceeding, thoroughly inspect the wiring harness and connectors between the Clockspring
and the Right Steering Switch for a short to ground or any other circuit.
Disconnect the Right Steering Switch harness connector.
Disconnect the C206 harness connector.
Measure the resistance of the following LIN Bus circuits:
•
The (D500) LIN Bus circuit between the Right Steering Switch harness connector and the C206 harness con-
nector (Steering Pad side).
•
The (D501) LIN Bus Slave Return circuit between the Right Steering Switch harness connector and the C206
harness connector (Steering Pad side).
•
The (D502) LIN Bus Slave Feed circuit between the Right Steering Switch harness connector and the C206
harness connector (Steering Pad side).
Is the resistance above 5.0 ohms for any of the LIN Bus circuits?
Yes
>> Repair the LIN Bus circuit(s) for an open.
No
>> Go to 3
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COLUMN ELECTRICAL DIAGNOSIS
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3.
CLOCKSPRING
Remove the Clockspring in accordance with the Service Information.
Measure the resistance of the following LIN Bus circuits:
•
The (D500) LIN Bus circuit between the Clockspring connector to the SCM and the C206 harness connector
(Clockspring side).
•
The (D501) LIN Bus Slave Return circuit between the Clockspring connector to the SCM and the C206 har-
ness connector (Clockspring side).
•
The (D502) LIN Bus Slave Feed circuit between the Clockspring connector to the SCM and the C206 harness
connector (Clockspring side).
Is the resistance above 5.0 ohms for any of the LIN Bus circuits?
Yes
>> Repair the LIN Bus circuit(s) for an open.
No
>> Go to 4
4.
RIGHT STEERING SWITCH
Replace the Right Steering Switch in accordance with the Service Information.
Reconnect the Clockspring.
Reconnect the C206 (LIN Bus) connector.
Turn the ignition on.
With the scan tool, select Clear Stored DTCs in the Steering Control Module.
With the scan tool, select View DTCs in the Steering Control Module.
Does the DTC reset?
Yes
>> Go to 5
No
>> Test complete.
5.
STEERING CONTROL MODULE (SCM)
View repair.
Repair
Replace the Steering Control Module (SCM) in accordance with the Service Information.
6.
INTERMITTENT LOST COMMUNICATION WITH LIN STEERING WHEEL CONTROLS DTC
The conditions necessary to set this DTC are not present at this time.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Were any problems found?
Yes
>> Repair as necessary.
No
>> Test complete.
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COLUMN ELECTRICAL DIAGNOSIS
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