DTC U3003:16/U3003:17 [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE]

id0902q2393700

Description | DTC U3003:16 • BSM control module power supply voltage low input DTC U3003:17 • BSM control module power supply voltage high input
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Detection condition | DTC U3003:16 • BSM control module power supply voltage is less than 9 V for 10 s or more. DTC U3003:17 • BSM control module power supply voltage is 16 V or more for 10 s or more.
Possible cause | • PCM DTC is stored. • 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 the following: • Ignition switch—BSM control module (LH) terminal B • Ignition switch—BSM control module (RH) terminal B ― METER 10 A fuse malfunction ― Open circuit in wiring harness between the following: • Ignition switch—BSM control module (LH) terminal B • Ignition switch—BSM control module (RH) terminal B • 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 there any malfunction? | Yes | Recharge or replace the battery, then go to Step 7. (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 7. (See GENERATOR REMOVAL/INSTALLATION [MZI-3.7].)
No | Go to the next step.
4 | INSPECT BSM CONTROL MODULE (LH) CONNECTOR • Turn the ignition switch to the OFF position. • 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 there any malfunction? | Yes | Repair or replace the connector, then go to Step 7.
No | Go to the next step.
5 | INSPECT BSM CONTROL MODULE (RH) CONNECTOR • 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 there any malfunction? | Yes | Repair or replace the connector, then go to Step 7.
No | Go to the next step.
6 | INSPECT BSM CONTROL MODULE POWER SUPPLY CIRCUIT • Verify that the BSM control module (LH) and (RH) connectors are disconnected. • Reconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].) • Measure the voltage at the following terminals (wiring harness-side): ― BSM control module (LH) terminal B ― BSM control module (RH) terminal B • 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.
7 | 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 BSM control module using the M-MDS. (See CLEARING DTC [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE].) • Turn the ignition switch to the ON position 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 8-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 8-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 8-PIN TYPE].)
No | DTC troubleshooting completed.