Dodge Ram Truck 1500-2500-3500. Manual — part 424
MIC-TURN HAZARD SWITCH INPUT CIRCUIT OPEN (CONTINUED)
For the Exterior Lighting system circuit diagram (Refer to 8 - ELECTRICAL/LAMPS/LIGHTING - EXTERIOR -
SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the Ignition on
•
Set Condition:
The CCN detects an open condition
Possible Causes
MULTIFUNCTION SWITCH
WIPER/TURN/BEAM SELECT SWITCH SENSE
TURN LAMPS SWITCH FEED CIRCUIT
INSTRUMENT CLUSTER
1.
INTERMITTENT CONDITION
Turn the ignition on.
With the DRBIII
T
, clear all MIC DTC’s.
Actuate the Hazard Lamps.
With the DRBIII
T
, read the DTC information.
Does the DRBIII
T
read: Turn Hazard Switch Input
Circuit Open?
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 BODY VERIFICATION TEST -
VER 1.
2.
MULTIFUNCTION SWITCH
Disconnect the Multifunction Switch connector.
Turn the ignition on.
Measure the voltage of the Multifunction Switch between the Sense circuit and the Feed circuit.
Does the voltage read 0.0volts?
Yes
>> Replace the Multifunction Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 3
8L - 102
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
DR/DH
MIC-TURN HAZARD SWITCH INPUT CIRCUIT OPEN (CONTINUED)
3.
WIPER/TURN/BEAM SELECT SWITCH SENSE
Turn the ignition off.
Disconnect the Multifunction Switch connector.
Disconnect the Instrument Cluster C4 connector.
Measure the resistance of the Wipe/Turn/Beam select sense circuit.
Is the resistance below 5.0 ohms?
Yes
>> Go To 4
No
>> Repair the Wiper/Turn/Beam Select Switch Sense circuit.
Perform BODY VERIFICATION TEST - VER 1.
4.
INSTRUMENT CLUSTER
Turn the ignition off
Disconnect the Multifunction Switch connector.
Disconnect the Instrument Cluster C4 connector.
Measure the resistance of the Turn Lamps Switch Feed circuit.
Is the resistance below 5.0 ohms?
Yes
>> Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Repair the Turn Lamps Switch Feed circuit.
Perform BODY VERIFICATION TEST - VER 1.
DR/DH
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 103
MIC-TURN HAZARD SWITCH INPUT CIRCUIT SHORTED
8L - 104
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
DR/DH
MIC-TURN HAZARD SWITCH INPUT CIRCUIT SHORTED (CONTINUED)
For the Exterior Lighting system circuit diagram (Refer to 8 - ELECTRICAL/LAMPS/LIGHTING - EXTERIOR -
SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the Exterior Lights active
•
Set Condition:
The CCN detects a short condition
Possible Causes
MULTIFUNCTION SWITCH
WIPER/TURN/BEAM SELECT SWITCH SENSE CIRCUIT SHORT TO GROUND
INSTRUMENT CLUSTER
1.
INTERMITTENT CONDITION
Turn the ignition on.
With the DRBIII
T
, clear all MIC DTC’s.
Actuate the Hazard Lamps.
With the DRBIII
T
, read the DTC information.
Does the DRBIII
T
read: Turn Hazard Switch Input
Circuit Short?
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 BODY VERIFICATION TEST -
VER 1.
2.
MULTIFUNCTION SWITCH
Disconnect the Multifunction Switch connector.
Turn the ignition on.
Does the DRBIII
T
display Multifunction Switch 5.0 volts?
Yes
>> Go To 3
No
>> Replace the Multifunction Switch.
Perform BODY VERIFICATION TEST - VER 1.
DR/DH
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 105
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