Chrysler Town, Dodge Caravan. Manual — part 804
Symptom:
HIGH BEAM SWITCH INPUT SHORT
When Monitored and Set Condition:
HIGH BEAM SWITCH INPUT SHORT
When Monitored:
Ignition On.
Set Condition:
When voltage is below 0.488 volts.
POSSIBLE CAUSES
INTERMITTENT CONDITION
MULTIFUNCTION SWITCH
HIGH BEAM SWITCH MUX CIRCUIT SHORT TO GROUND
HIGH BEAM SWITCH MUX SHORT TO MUX RETURN CIRCUIT
BODY CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, clear all BCM DTC’s.
Actuate the High Beams.
With the DRBIII
t, read the DTC information.
Does the DRBIII
t read: High Beam Switch Input Short?
All
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
Turn the ignition off.
Disconnect the Multifunction Switch harness connector.
Turn the ignition on.
With the DRBIII
t, read the Multifunction Switch voltage.
Is the voltage above 4.8 volts?
All
Yes
→ Replace the Multifunction Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the Body Control Module C5 harness connector.
Disconnect the Multifunction Switch Harness connector.
Measure the resistance between the High Beam Switch MUX circuit and ground.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the High Beam Switch MUX circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
452
EXTERIOR LIGHTING
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the Body Control Module C4 harness connector.
Disconnect the Multifunction Switch harness connector.
Measure the resistance between the Multifunction Switch MUX Return circuit and
the High Beam Switch MUX circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the High Beam Switch MUX circuit for a short to the
Multifunction Switch MUX Return circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
453
EXTERIOR LIGHTING
HIGH BEAM SWITCH INPUT SHORT —
Continued
Symptom:
LEFT FRONT TURN SIGNAL OUTPUT OPEN
When Monitored and Set Condition:
LEFT FRONT TURN SIGNAL OUTPUT OPEN
When Monitored:
Ignition On and left turn signal On.
Set Condition:
When output voltage status is LOW.
POSSIBLE CAUSES
INTERMITTENT CONDITION
GROUND CIRCUIT OPEN
TURN SIGNAL LAMP OPEN
LEFT TURN SIGNAL OUTPUT CIRCUIT OPEN
BODY CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, clear all BCM DTC’s.
Actuate the Turn Signals.
With the DRBIII
t, read the DTC information.
Does the DRBIII
t read: Left Front Turn Signal Output Open?
All
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
Turn the ignition off
Disconnect the Left Front Turn Signal harness connector.
Using a 12-volt test light connected to 12-volts, check the ground circuit.
Does the test light illuminate brightly?
All
Yes
→ Go To 3
No
→ Repair the Ground Circuit.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition off.
Disconnect the Left Front Turn Signal Lamp connector.
Turn the ignition on.
Turn the Left Turn Signal on.
Using a 12-volt test light connected to ground, check the Left Front Turn Signal
Output circuit.
Does the test light illuminate brightly?
All
Yes
→ Replace the Turn Signal Lamp.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
454
EXTERIOR LIGHTING
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the BCM C2 harness connector.
Disconnect the left front turn signal lamp harness connector.
Measure the resistance of the Left Front Turn Signal Output Circuit and ground.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Left Front Turn Signal Output Circuit for an open
condition.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
455
EXTERIOR LIGHTING
LEFT FRONT TURN SIGNAL OUTPUT OPEN —
Continued
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