Dodge Ram Truck 1500-2500-3500. Manual — part 403

FCM-FRONT RIGHT TURN OUTPUT CIRCUIT LOW

8L - 18

LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS

DR/DH

FCM-FRONT RIGHT TURN OUTPUT CIRCUIT LOW (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 FCM detects a short to ground condition

Possible Causes

RIGHT FRONT TURN LAMP DRIVER CIRCUIT SHORT TO GROUND

POWER DISTRIBUTION CENTER

FRONT CONTROL MODULE

1.

INTERMITTENT CONDITION

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?

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.

DR/DH

LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS

8L - 19

FCM-FRONT RIGHT TURN OUTPUT CIRCUIT LOW (CONTINUED)

2.

RIGHT FRONT TURN LAMP DRIVER CIRCUIT SHORT TO GROUND

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?

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.

FRONT CONTROL MODULE

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?

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.

8L - 20

LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS

DR/DH

FCM-FRONT RIGHT TURN OUTPUT CIRCUIT OPEN

DR/DH

LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS

8L - 21