Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 482
B2108-IGNITION SWITCH SENSE INPUT CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
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•
When Monitored:
With the Instrument Cluster awake.
•
Set Condition:
Ignition Switch Sense circuit voltage less than .3 volts.
Possible Causes
(G20) IGNITION SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND
(G20) IGNITION SWITCH SENSE CIRCUIT SHORT TO (G900) IGNITION SWITCH SENSE RETURN CIRCUIT
IGNITION SWITCH
INSTRUMENT CLUSTER
Diagnostic Test
1.
CHECK FOR AN ACTIVE DTC
Turn the ignition on.
With the scan tool, record and erase DTCs.
Wait 30 seconds.
With the scan tool, read DTCs.
Is the DTC active?
Yes
>> Go To 2
No
>> The condition that caused this code to set is not present at this time. Check for an intermittent condition
by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also
inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated termi-
nals.
Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1).
2.
CHECK OPERATION OF IGNITION SWITCH
Turn the ignition off.
Disconnect the Ignition Switch harness connector.
Connect a jumper wire between Ignition Switch harness connector cav-
ities 3 and 5.
NOTE: This will provide power to the vehicle systems with the
ignition switch disconnected.
With the scan tool, erase Instrument Cluster DTCs.
Wait 30 seconds.
With the scan tool, read Instrument Cluster DTCs.
Does the scan tool display-B2109-IGNITION SWITCH SENSE
INPUT CIRCUIT HIGH?
Yes
>> Replace the Ignition Switch in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1).
No
>> Go To 3
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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
8J - 33
3.
CHECK THE (G20) IGNITION SWITCH SENSE CIRCUIT FOR A SHORT TO THE (G900) IGNITION SWITCH
SENSE RETURN CIRCUIT
Remove the jumper wire between Ignition Switch harness connector
cavities 3 and 5.
Disconnect the Instrument Cluster C2 harness connector.
Measure the resistance between the (G20) Ignition Switch Sense Cir-
cuit and the (G900) Ignition Switch Sense Return circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (G20) Ignition Switch Sense Circuit for a short to
the (G900) Ignition Switch Sense Return circuit.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1).
No
>> Go To 4
4.
CHECK THE (G20) IGNITION SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND
Measure the resistance between ground and the (G20) Ignition Switch
Sense Circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (G20) Ignition Switch Sense Circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1).
No
>> Replace the Instrument Cluster in accordance with the ser-
vice information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1).
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INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
LX
B2109-IGNITION SWITCH SENSE INPUT CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
LX
INSTRUMENT CLUSTER - ELECTRICAL DIAGNOSTICS
8J - 35
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