Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 505
B165C-PARK LAMP CONTROL CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
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LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
LX
•
When Monitored:
•
With the Park Lamps activated.
•
Set Condition:
•
When the FCM detects a LOW condition.
Possible Causes
(L177) PARK LAMP CONTROL CIRCUIT
FRONT CONTROL MODULE
Diagnostic Test
1.
INTERMITTENT CONDITION
Turn the ignition on.
With the Scan Tool, clear all FCM DTC’s.
Turn the Park Lamps on.
With the Scan Tool read the DTC information.
Does the Scan Tool read: B165C-PARK 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.
(L177) PARK LAMP CONTROL CIRCUIT
Turn the ignition off.
Disconnect the FCM PDM harness connector.
Measure the resistance between ground and the (L177) Park Lamp
Control circuit.
Is the resistance below 5.0 ohms?
Yes
>> Replace the Front Control Module (FCM) in accordance
with the service information.
Perform the BODY VERIFICATION TEST VER1.
No
>> Repair the (L177) Park Lamp Control circuit for a short to
ground condition.
Perform the BODY VERIFICATION TEST VER1.
LX
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 51
B165D-PARK 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:
•
With the Front Fog Lamps activated.
•
Set Condition:
•
When the FCM detects a HIGH condition.
Possible Causes
PARK LAMP RELAY
MODULE-POWER DISTRIBUTION
FRONT CONTROL MODULE
Diagnostic Test
1.
INTERMITTENT CONDITION
Turn the ignition on.
With the Scan Tool, clear all FCM DTC’s.
Actuate the Park Lamps.
With the Scan Tool read the DTC information.
Does the Scan Tool read: B165D-PARK LAMP CONTROL CIRCUIT HIGH?
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.
PARK LAMP RELAY
Turn the ignition off.
Remove and install a known good relay in place of the Park Lamp Relay.
Do the Front Fog Lamps operate normally?
Yes
>> Replace the Park Lamp Relay in accordance with the service information.
Perform the BODY VERIFICATION TEST VER1.
No
>> Go To 3
3.
FRONT CONTROL MODULE
Turn the ignition off.
Remove the Park Lamp Relay from the MPD.
Remove the FCM from the Module Power Distribution.
Measure the voltage of the (L177) Park Lamp Relay Control circuit and
ground.
Is the voltage above 1.0 volts?
Yes
>> Replace the Module Power Distribution center in accor-
dance with the service information.
Perform the BODY VERIFICATION TEST-VER1.
No
>> Replace the Module Front Control in accordance with the
service information.
Perform the BODY VERIFICATION TEST-VER1.
LX
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 53
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