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

id0902p9030900

Description | Forward sensing camera (FSC) power supply voltage low input
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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
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1 | VERIFY PCM DTCs • Retrieve the PCM DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [MZI-3.7].) • 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. (See BATTERY INSPECTION [MZI-3.7].) • 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. (See GENERATOR INSPECTION [MZI-3.7].) • 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. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].) • 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. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].) • Display the PID VPWR_IG1 using the M-MDS. (See PID/DATA MONITOR INSPECTION [FORWARD SENSING CAMERA (FSC)].) • 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. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].) • Clear the DTC for the forward sensing camera (FSC) using the M-MDS. (See CLEARING DTC [FORWARD SENSING CAMERA (FSC)].) • 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. (See DTC INSPECTION [FORWARD SENSING CAMERA (FSC)].) • Is the same DTC displayed? | Yes | Repeat the inspection from Step 1. • If the malfunction recurs, replace the forward sensing camera (FSC). (See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION.) 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.