Dodge Ram Truck 1500-2500-3500. Manual — part 417

FCM-REAR RIGHT TURN OUTPUT 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 FCM detects an open condition

Possible Causes

REAR RIGHT TURN SIGNAL OUTPUT CIRCUIT OPEN

POWER DISTRIBUTION CENTER

FRONT CONTROL MODULE

1.

INTERMITTENT CONDITION

Turn the ignition on.

With the DRBIII

T

, clear all FCM DTC’s.

Actuate the Right Rear Turn Signal lamp.

With the DRBIII

T

, read the DTC information.

Does the DRBIII

T

read: Rear Right Turn Output 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.

REAR RIGHT TURN SIGNAL OUTPUT CIRCUIT OPEN

Turn the ignition off.

Disconnect the IPM C3 harness connector

Measure the resistance of the Rear Right Turn Signal Output circuit.

Is the resistance above 5.0 ohms?

Yes

>> Repair the Rear Right Turn Signal Output circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

No

>> Go To 3

8L - 74

LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS

DR/DH

FCM-REAR RIGHT TURN OUTPUT CIRCUIT OPEN (CONTINUED)

3.

FRONT CONTROL MODULE

Turn the ignition off

Disconnect the FCM harness connector.

Disconnect the IPM C3 harness connector.

Measure the resistance between ground and the Rear Right Turn Signal Output circuit.

Is the resistance above 5.0 ohms?

Yes

>> Replace the Power Distribution Center..

Perform BODY VERIFICATION TEST - VER 1.

No

>> Replace the Front Control Module.

Perform BODY VERIFICATION TEST - VER 1.

DR/DH

LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS

8L - 75

FCM-RIGHT HIGHBEAM OUTPUT CIRCUIT LOW

8L - 76

LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS

DR/DH

FCM-RIGHT HIGHBEAM 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 FCMK detects a short to ground condition

Possible Causes

RIGHT HIGHBEAM OUTPUT 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.

Actuate the Highbeams headlamps.

With the DRBIII

T

, read the DTC information.

Does the DRBIII

T

read: Right Highbeam 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 - 77