DTC U3003:16 [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE]

id0902q3394000

Description | BSM control module low power supply voltage input (less than 8.2 V)
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Detection condition | • BSM control module power supply voltage of less than 8.2 V is detected for 10 s or more.
Fail-safe function | • Blind spot monitoring (BSM) system is stopped.
Possible cause | • DTCs are stored in the PCM. • Battery malfunction • Generator malfunction • BSM control module (LH) connector or terminal malfunction • BSM control module (RH) connector or terminal malfunction • BSM control module power supply circuit malfunction ― Short to ground in wiring harness between METER 10 A fuse and BSM control module terminal I ― METER 10 A fuse malfunction ― Open circuit in wiring harness between Ignition switch and BSM control module terminal I • BSM control module 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 the battery normal? | Yes | Go to the next step.
No | Recharge or replace the battery, then go to Step 7. (See BATTERY RECHARGING [MZI-3.7].) (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)
3 | INSPECT GENERATOR • Inspect the generator. (See GENERATOR INSPECTION [MZI-3.7].) • Is the generator normal? | Yes | Go to the next step.
No | Replace the generator, then go to Step 7. (See GENERATOR REMOVAL/INSTALLATION [MZI-3.7].)
4 | INSPECT BSM CONTROL MODULE (LH) CONNECTOR CONDITION • Switch the ignition off. • Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].) • Disconnect the BSM control module (LH) 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 7.
5 | INSPECT BSM CONTROL MODULE (RH) CONNECTOR CONDITION • Disconnect the BSM control module (RH) 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 7.
6 | VERIFY BSM CONTROL MODULE POWER SUPPLY VOLTAGE • Always reconnect all disconnected connectors. • Reconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].) • Display PID VPWR_IG1 using the M-MDS. (See PID/DATA MONITOR INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].) • Is the voltage B+? | Yes | Go to the next step.
No | Inspect the METER 10 A fuse. • If the fuse is blown: ― Refer to the wiring diagram and verify whether or not there is a common connector between METER 10 A fuse and BSM control module terminal I. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. • Replace the fuse. • If the fuse is damaged: ― Replace the fuse. • If the fuse is normal: ― Refer to the wiring diagram and verify whether or not there is a common connector between Ignition switch and BSM control module terminal I. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to the next step.
7 | VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Always reconnect all disconnected connectors. • Reconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].) • Clear the DTC for the BSM control module using the M-MDS. (See CLEARING DTC [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].) • Switch the ignition ON (engine off or on) and wait for 10 s or more. • Retrieve the BSM control module DTCs using the M-MDS. (See DTC INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].) • Is the same DTC displayed? | Yes | Repeat the inspection from Step 1. • If the malfunction recurs, replace the BSM control module. (See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].) Go to the next step.
No | Go to the next step.
8 | 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 [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].)
No | DTC troubleshooting completed.