Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1113
3.
(N4) FUEL LEVEL SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
Turn the ignition off.
Disconnect the C2 Cluster harness connector.
Ignition on, engine not running.
Measure the voltage on the (N4) Fuel Level Signal circuit in the Fuel
Pump Module harness connector.
Is the voltage above 5.2 volts?
Yes
>> Repair the short to battery voltage in the (N4) Fuel Level
Signal circuit.
Perform BODY VERIFICATION TEST-VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)
No
>> Go To 4
4.
(N4) FUEL LEVEL SIGNAL CIRCUIT OPEN
Turn the ignition off.
Measure the resistance of the (N4) Fuel Level Signal circuit from the
Fuel Pump Module harness connector to the C2 Cluster harness con-
nector.
Is the resistance below 5.0 ohms?
Yes
>> Go To 5
No
>> Repair the open in the (N4) Fuel Level Signal circuit.
Perform BODY VERIFICATION TEST-VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)
9 - 476
ENGINE ELECTRICAL DIAGNOSTICS
LX
5.
(Z210) FUEL LEVEL SENSOR GROUND CIRCUIT OPEN
Measure the resistance of the (Z210) Fuel Level Sensor Ground circuit
from the Fuel Pump Module harness connector to the C2 Cluster har-
ness connector.
Is the resistance below 5.0 ohms?
Yes
>> Go To 6
No
>> Repair the open in the (Z210) Fuel Level Sensor Ground
circuit.
Perform BODY VERIFICATION TEST-VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)
6.
INSTRUMENT CLUSTER
NOTE: Before continuing, check the Instrument Cluster harness connector terminals for corrosion, damage,
or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and
Ground circuits.
Were there any problems found?
Yes
>> Repair as necessary.
Perform BODY VERIFICATION TEST-VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/FRONT CONTROL MODULE - DIAGNOSIS AND TESTING)
No
>> Replace and program the Instrument Cluster per Service Information.
Perform BODY VERIFICATION TEST-VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/FRONT CONTROL MODULE - DIAGNOSIS AND TESTING)
LX
ENGINE ELECTRICAL DIAGNOSTICS
9 - 477
P0480-COOLING FAN 1 CONTROL CIRCUIT
For a complete wiring diagram Refer to Section 8W.
9 - 478
ENGINE ELECTRICAL DIAGNOSTICS
LX
•
When Monitored:
With the ignition on. Battery voltage greater than 10 volts.
•
Set Condition:
The ECM receives a CAN Bus message from the FCM indicating an open or shorted circuit on the Radiator
Fan Relay Control circuit.
Possible Causes
FUSED (B+) FEED CIRCUITS
(N201) RADIATOR FAN CONTROL RELAY CONTROL CIRCUIT OPEN
(N201) RADIATOR FAN CONTROL RELAY CIRCUIT SHORT TO GROUND
RADIATOR FAN CONTROL RELAY
FRONT CONTROL MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.
RADIATOR FAN CONTROL RELAY OPERATION
NOTE: When actuating the radiator fan relays, the Radiator Fan(s) may have a delay in operation and ramp
up slowly.
Ignition on, engine not running.
With a scan tool, select Radiator Cooling Fan Relay #1 Control State to actuate the Radiator Fan Control Relay.
Is the Cooling Fan Relay operating?
Yes
>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Go To 2
2.
FUSED B+ CIRCUITS
Turn the ignition off.
Remove the Radiator Fan Control Relay.
Using a 12-volt test light connected to ground, probe the Fused B+ cir-
cuits.
Is the voltage above 11.0 volts?
Yes
>> Go To 3
No
>> Repair the open or short to ground in the Fused B+ circuits.
Inspect the related fuse and repair as necessary.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL MODULES
-
STANDARD PROCEDURE)
LX
ENGINE ELECTRICAL DIAGNOSTICS
9 - 479
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