Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 833
B2230–RAM WRITE PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The Hands Free Module detects a fault during an internal diagnostic check.
Possible Causes
HANDS FREE MODULE
Diagnostic Test
1.
REPLACE THE HANDS FREE MODULE IF DTC IS ACTIVE
With the scan tool, read the active DTC’s.
Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per
cycle.
With the scan tool, read the active DTC’s.
Does the scan tool display this DTC as active?
Yes
>> Replace and program the Hands Free Module in accordance with the service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to BODY VERIFICATION TEST – VER 1).
No
>> If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness con-
nectors. Look for broken, bent, pushed out, or corroded terminals.
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U0019–CAN B BUS
For a complete wiring diagram Refer to Section 8W.
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NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
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•
When Monitored:
Continuously
•
Set Condition:
Whenever the CAN B Bus (+) or CAN B Bus (-) circuit is open, shorted to voltage or shorted to ground.
Possible Causes
CAN B BUS DTC’s IN FRONT CONTROL MODULE
(D55) CAN B BUS (+) CIRCUIT OPEN
(D54) CAN B BUS (-) CIRCUIT OPEN
HANDS FREE MODULE
Diagnostic Test
1.
CHECK FOR ACTIVE DTCS
With the scan tool, read the active DTC’s.
Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per
cycle.
With the scan tool, read the active DTC’s.
Does the scan tool display this DTC as active?
Yes
>> Go To 2
No
>> If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness con-
nectors. Look for broken, bent, pushed out, or corroded terminals.
2.
CHECK FRONT CONTROL MODULE DTC’s
With the scan tool, read the Front Control Module active DTC’s.
Does the scan tool display any CAN B BUS DTC’s – ACTIVE?
Yes
>> (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) and
perform the appropriate diagnostic test.
No
>> Go To 3
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3.
(D55) CAN B BUS (+) CIRCUIT OPEN
Turn the ignition off.
Disconnect the negative battery cable.
Disconnect the Hands Free Module harness connector.
Disconnect the Front Control Module C1 harness connector.
Measure the resistance of the (D55) CAN B Bus (+) circuit between the
Front Control Module C1 connector and the Hands Free Module con-
nector.
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
BODY VERIFICATION TEST – VER 1).
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 Hands Free Module con-
nector.
Is the resistance below 2.0 ohms?
Yes
>> Replace the Hands Free Module in accordance with the
service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
No
>> Repair the (D54) CAN B Bus (–) circuit for an open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
LX
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
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