DTC U3006:62 [FRONT BODY CONTROL MODULE (FBCM)]

id0902p2011800

System malfunction location

Front body control module (FBCM) power supply voltage mismatch
Detection condition
•  Front body control module (FBCM) terminal 1A, 1B, 3K, and 3L voltages of 2 V or more lower than the voltage of terminal 2A are detected for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe
—
Possible cause
•  Front body control module (FBCM) connector or terminal malfunction
•  Front body control module (FBCM) power supply circuit malfunction
―  Short to ground in the wiring harness between ROOM 15 A fuse and front body control module (FBCM) terminal 2A
―  Short to ground in the wiring harness between HAZARD 25 A fuse and front body control module (FBCM) terminal 1A
―  Short to ground in the wiring harness between HAZARD 25 A fuse and front body control module (FBCM) terminal 1B
―  Short to ground in the wiring harness between HAZARD 25 A fuse and front body control module (FBCM) terminal 3K
―  Short to ground in the wiring harness between HAZARD 25 A fuse and front body control module (FBCM) terminal 3L
―  ROOM 15 A fuse malfunction
―  HAZARD 25 A fuse malfunction
―  Open circuit in wiring harness between battery positive terminal and front body control module (FBCM) terminal 2A
―  Open circuit in wiring harness between battery positive terminal and front body control module (FBCM) terminal 1A
―  Open circuit in wiring harness between battery positive terminal and front body control module (FBCM) terminal 1B
―  Open circuit in wiring harness between battery positive terminal and front body control module (FBCM) terminal 3K
―  Open circuit in wiring harness between battery positive terminal and front body control module (FBCM) terminal 3L
•  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) and wait for 5 s or more.
•  Perform the front body control module (FBCM) DTC inspection using the M-MDS.
•  Is DTC U3006:62 displayed?
Yes
Go to the next step.
No
Go to Step 6.
2
VERIFY FRONT BODY CONTROL MODULE (FBCM) DTCs
•  Perform the front body control module (FBCM) DTC inspection using the M-MDS.
•  Is the DTC displayed?
Yes
Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].)
No
Go to the next step.
3
INSPECT FRONT BODY CONTROL MODULE (FBCM) CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  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 5.
4
VERIFY FRONT BODY CONTROL MODULE (FBCM) POWER SUPPLY VOLTAGE
•  Reconnect all the disconnected connectors.
•  Connect the negative battery cable.
•  Display PID VPWR_B using the M-MDS.
•  Is the voltage B+?
Yes
Go to the next step.
No
Inspect the ROOM 15 A and HAZARD 25 A fuses.
•  If a fuse is burnt out:
―  Repair or replace the wiring harness which is shorted to ground.
―  Replace the burnt out fuse.
•  If a fuse is damaged:
―  Replace the damaged fuse.
•  All fuses are normal:
―  Repair or replace the wiring harness which has an open circuit.
Go to the next step.
5
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) and wait for 5 s or more.
•  Perform the front body control module (FBCM) DTC inspection using the M-MDS.
•  Is DTC U3006:62 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.
6
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.