Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 506
B1667-REVERSE LAMP CONTROL CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
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LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
LX
Possible Causes
(L1) BACKUP LAMPS FEED CIRCUIT
INTEGRATED POWER MODULE
FRONT CONTROL MODULE
Diagnostic Test
1.
INTERMITTENT CONDITION
Turn the ignition on.
With the Scan Tool, clear all FCM DTC’s.
Turn the Reverse Lamps on.
With the Scan Tool read the DTC information.
Does the Scan Tool read: B1667-REVERSE LAMP CONTROL CIRCUIT LOW?
Yes
>> Go To 2
No
>> The condition that caused the symptom is currently not present. Inspect the related wiring for a possible
intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
Perform the BODY VERIFICATION TEST-VER1.
2.
L1 BACKUP LAMPS FEED CIRCUIT
Turn the ignition off.
Disconnect the FCM PDM connector.
Measure the resistance between ground and the (L1) Backup Lamps
Feed circuit.
Is the resistance below 5.0 ohms?
Yes
>> Go To 3
No
>> Repair the (L1) Backup Lamps Control circuit for a short to
ground.
Perform the BODY VERIFICATION TEST-VER1.
3.
FRONT CONTROL MODULE
Turn the ignition off.
Disconnect the FCM from the IPM connector.
Measure the resistance between ground and the (L1) Backup Lamps Feed circuit in the IPM.
Is the resistance below 5.0 ohms?
Yes
>> Replace the Module Power Distribution Center in accordance with the service information.
Perform the BODY VERIFICATION TEST-VER1.
No
>> Replace the Front Control Module in accordance with the service information.
Perform the BODY VERIFICATION TEST-VER1.
LX
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
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B1668-REVERSE LAMP CONTROL CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
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LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
LX
•
When Monitored:
•
Continuously
•
Set Condition:
•
When the Front Control Module detects a short to battery on the Control circuit.
Possible Causes
(L1) BACKUP LAMPS CONTROL CIRCUIT
POWER DISTRIBUTION CENTER
FRONT CONTROL MODULE
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
Clear all FCM DTC’s
Turn the Right Turn Signal on.
With the scan tool, read DTC’s.
Does the scan tool read: B1668-REVERSE LAMP CONTROL CIRCUIT HIGH?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche-
matic as a guide, inspect the wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2.
L1 BACKUP LAMPS CONTROL CIRCUIT
Turn the ignition off.
Disconnect the PDM connector from the FCM.
Measure the resistance of the (L1) Backup Lamps Control circuit.
Is the resistance above 5.0 ohms?
No
>> Repair the (L1) Backup Lamps Control circuit.
Perform BODY VERIFICATION TEST - VER 1.
Yes
>> Go To 3
LX
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 57
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