DTC B13FE:14 [FRONT BODY CONTROL MODULE (FBCM)]

id0902p2009000

System malfunction location

Headlight LO relay (RH) circuit malfunction
Detection condition
•  The front body control module (FBCM) detects an open or short circuit to ground in the headlight LO relay (RH) circuit with the ignition switched ON (engine off or on).
Fail-safe
—
Possible cause
•  Headlight LO relay (RH) malfunction
•  Front body control module (FBCM) connector or terminal malfunction
•  Short to ground in the wiring harness between headlight LO relay (RH) terminal E and front body control module (FBCM) terminal 2V
•  Open circuit in the wiring harness between headlight LO relay (RH) terminal E and front body control module (FBCM) terminal 2V
•  Front body control module (FBCM) malfunction

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY FRONT BODY CONTROL MODULE (FBCM) DTCs AGAIN
•  Clear front body control module (FBCM) DTCs using the M-MDS.
•  Switch the ignition ON (engine off or on).
•  Perform the front body control module (FBCM) DTC inspection using the M-MDS.
•  Is DTC B13FE:14 displayed?
Yes
Go to the next step.
No
Go to Step 7.
2
INSPECT HEADLIGHT LO RELAY (RH) FOR MALFUNCTION
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Remove the headlight LO relay (RH).
•  Inspect the headlight LO relay (RH).
•  Is the headlight LO relay (RH) normal?
Yes
Go to the next step.
No
Replace the headlight LO relay (RH), then go to Step 6.
3
INSPECT FRONT BODY CONTROL MODULE (FBCM) CONNECTOR CONDITION
•  Disconnect the front body control module (FBCM) connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 6.
4
INSPECT HEADLIGHT LO RELAY (RH) CONTROL CIRCUIT FOR SHORT TO GROUND
•  Verify that the headlight LO relay (RH) is removed.
•  Verify that the front body control module (FBCM) connector is disconnected.
•  Inspect for continuity between front body control module (FBCM) terminal 2V (vehicle wiring harness side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness, then go to Step 6.
No
Go to the next step.
5
INSPECT HEADLIGHT LO RELAY (RH) CONTROL CIRCUIT FOR OPEN CIRCUIT
•  Verify that the headlight LO relay (RH) is removed.
•  Verify that the front body control module (FBCM) connector is disconnected.
•  Inspect the wiring harness for continuity between headlight LO relay (RH) terminal E (vehicle wiring harness side) and front body control module (FBCM) terminal 2V (vehicle wiring harness side).
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness and go to the next step.
6
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Reconnect all the disconnected connectors.
•  Reconnect the disconnected negative battery cable.
•  Clear front body control module (FBCM) DTCs using the M-MDS.
•  Switch the ignition ON (engine off or on).
•  Perform the front body control module (FBCM) DTC inspection using the M-MDS.
•  Is DTC B13FE:14 displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the front body control module (FBCM), then go to the next step.
No
Go to the next step.
7
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].)
No
DTC troubleshooting completed.