Dodge Ram. Manual — part 83
Symptom:
FCM-FRONT LEFT TURN OUTPUT CIRCUIT OPEN
POSSIBLE CAUSES
INTERMITTENT CONDITION
FRONT CONTROL MODULE
LEFT FRONT TURN SIGNAL OUTPUT CIRCUIT OPEN
POWER DISTRIBUTION CENTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, clear all FCM DTC’s.
Turn the Left Front Turn Signal on.
With the DRBIII
t, read the DTC information.
Does the DRBIII
t read: Front Left Turn Output Circuit 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 IPM C3 harness connector
Measure the resistance of the Left Front Turn Signal Output circuit.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Left Front Turn Signal Output circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off
Disconnect the FCM harness connector.
Disconnect the IPM C3 harness connector.
Measure the resistance between ground and the Left Front Turn Signal Output
circuit.
Is the resistance above 5.0 ohms?
All
Yes
→ Replace the Power Distribution Center..
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
329
EXTERIOR LIGHTING
Symptom:
FCM-FRONT RIGHT TURN OUTPUT CIRCUIT LOW
POSSIBLE CAUSES
INTERMITTENT CONDITION
RIGHT FRONT TURN LAMP DRIVER CIRCUIT SHORT TO GROUND
FRONT CONTROL MODULE
POWER DISTRIBUTION CENTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, clear all FCM DTC’s.
Turn the Right Front Turn Signal on.
With the DRBIII
t, read the DTC information.
Does the DRBIII
t read: Front Right Turn Output Circuit Low?
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 IPM C3 harness connector.
Measure the resistance between ground and the Right Front Turn Lamp Driver
circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 3
No
→ Repair the Right Front Turn Lamp Driver circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition off
Disconnect the FCM connector.
Disconnect the IPM C3 harness connector.
Measure the resistance between ground and the Right Front Turn Lamp Driver
circuit in the IPM.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Power Distribution Center(PDC).
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
330
EXTERIOR LIGHTING
Symptom:
FCM-FRONT RIGHT TURN OUTPUT CIRCUIT OPEN
POSSIBLE CAUSES
INTERMITTENT CONDITION
RIGHT FRONT TURN SIGNAL OUTPUT CIRCUIT OPEN
FRONT CONTROL MODULE
POWER DISTRIBUTION CENTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, clear all FCM DTC’s.
Turn the Right Front Turn Signal on.
With the DRBIII
t, read the DTC information.
Does the DRBIII
t read: Front Right Turn Output Circuit 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 IPM C3 harness connector
Measure the resistance of the Right Front Turn Signal Output circuit.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Right Front Turn Signal Output circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off
Disconnect the FCM from the IPM.
Disconnect the IPM C3 harness connector.
Measure the resistance of the Right Front Turn Signal Output circuit.
Is the resistance above 5.0 ohms?
All
Yes
→ Replace the Power Distribution Center..
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
331
EXTERIOR LIGHTING
Symptom:
FCM-LEFT HIGHBEAM OUTPUT CIRCUIT LOW
POSSIBLE CAUSES
INTERMITTENT CONDITION
LEFT HIGHBEAM OUTPUT CIRCUIT SHORT TO GROUND
FRONT CONTROL MODULE
POWER DISTRIBUTION CENTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, clear all FCM DTC’s.
Turn the High Beams Lamps on.
With the DRBIII
t, read the DTC information.
Does the DRBIII
t read: Left Highbeam Output Circuit Low?
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 IPM C7 harness connector.
Measure the resistance between ground and the Left Highbeam Output circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 3
No
→ Repair the Left Highbeam Output circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition off
Disconnect the FCM connector.
Disconnect the IPM C7 harness connector.
Measure the resistance between ground and the Left Highbeam Output circuit in the
IPM.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Power Distribution Center(PDC).
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
332
EXTERIOR LIGHTING
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