DTC U3003:16 [FORWARD SENSING CAMERA (FSC)]

id0902p9030900

Description

Forward sensing camera (FSC) power supply voltage low input
Detection condition
•  Forward sensing camera (FSC) power supply circuit voltage is less than 7.2 V for 5 s or more.
Fail-safe
•  Inhibits the lane departure warning system (LDWS).
•  Inhibits the high beam control (HBC) system.
•  Inhibits the forward obstruction warning (FOW) system.
Possible cause
•  PCM DTC is stored.
•  Battery malfunction
•  Generator malfunction
•  Forward sensing camera (FSC) connector or terminal malfunction
•  Forward sensing camera (FSC) power supply circuit malfunction
―  Short to ground in wiring harness between METER 10 A fuse and forward sensing camera (FSC) terminal I
―  METER 10 A fuse malfunction
―  Open circuit in wiring harness between ignition switch and forward sensing camera (FSC) terminal I
•  Forward sensing camera (FSC) malfunction

Diagnostic procedure

Step

Inspection

Action
1
VERIFY PCM DTCs
•  Retrieve the PCM DTCs using the M-MDS.
•  Are any DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [MZI-3.7].)
No
Go to the next step.
2
INSPECT BATTERY
•  Inspect the battery.
•  Is there any malfunction?
Yes
Recharge or replace the battery, then go to Step 6.
(See BATTERY RECHARGING [MZI-3.7].)
(See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)
No
Go to the next step.
3
INSPECT GENERATOR
•  Inspect the generator.
•  Is there any malfunction?
Yes
Replace the generator, then go to Step 6.
(See GENERATOR REMOVAL/INSTALLATION [MZI-3.7].)
No
Go to the next step.
4
INSPECT FORWARD SENSING CAMERA (FSC) CONNECTOR
•  Turn the ignition switch to the OFF position.
•  Disconnect the negative battery cable.
•  Disconnect the forward sensing camera (FSC) connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is there any malfunction?
Yes
Repair or replace the connector, then go to Step 6.
No
Go to the next step.
5
VERIFY FORWARD SENSING CAMERA (FSC) POWER SUPPLY VOLTAGE
•  Make sure to reconnect all disconnected connectors.
•  Reconnect the negative battery cable.
•  Display the PID VPWR_IG1 using the M-MDS.
•  Is the voltage B+?
Yes
Go to the next step.
No
Inspect the METER 10 A fuse.
•  If a fuse is burnt out:
―  Repair or replace the wiring harness which has a short to ground.
―  Replace the fuse.
•  If a fuse is damaged:
―  Replace the damaged fuse.
•  If a fuse is normal:
―  Repair or replace the wiring harness which has an open circuit.
Go to the next step.
6
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Reconnect the negative battery cable.
•  Clear the DTC for the forward sensing camera (FSC) using the M-MDS.
•  Turn the ignition switch to the ON position and wait for 6.5 s or more.
•  Retrieve the forward sensing camera (FSC) DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the forward sensing camera (FSC).
Go to the next step.
No
Go to the next step.
7
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [FORWARD SENSING CAMERA (FSC)].)
No
DTC troubleshooting completed.