DTC U3000:4A [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE]

id0902q2393500

Description | BSM control module assembly abnormality
--- | ---
Detection condition | • A logic is provided to monitor for incorrect installation in order to prevent the left and right BSM control modules from being installed in reverse of each other. Terminal E of the BSM control module (LH) monitors the body ground condition, and terminal E of the BSM control module (RH) monitors the BSM OFF switch condition. The circuit is open during non-operation of the BSM OFF switch. It can be determined that the left and right BSM control modules have been installed in reverse if the following conditions occur: ― A short to ground condition of BSM control module (RH) terminal E continues for 180 s or more. ― An open circuit condition of BSM control module (LH) terminal E continues for 0.9 s or more.
Possible cause | • BSM control module (LH) and BSM control module (RH) have been installed such that their left and right positions are reversed. • BSM OFF switch connector or terminal malfunction • BSM OFF switch malfunction • BSM control module (RH) connector or terminal malfunction • Short to ground in wiring harness between BSM OFF switch terminal I (L.H.D.)/C (R.H.D.) and BSM control module (RH) terminal E • BSM control module (LH) connector or terminal malfunction • Open circuit in wiring harness between BSM control module (LH) terminal E and body ground • BSM control module malfunction

Diagnostic procedure

Step | Inspection | Action
--- | --- | ---
1 | VERIFY BSM CONTROL MODULES NOT INSTALLED IN REVERSE • Verify the left/right indicator labels adhered to the BSM control modules. • Have the left and right BSM control modules been installed in reverse? | Yes | Install the BSM control modules in their correct positions, then go to Step 8.
No | Go to the next step.
2 | INSPECT BSM OFF SWITCH CONNECTOR • Turn the ignition switch to the OFF position. • Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].) • Disconnect the BSM OFF switch 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 8.
No | Go to the next step.
3 | INSPECT BSM OFF SWITCH • Inspect the BSM OFF switch. (See BLIND SPOT MONITORING (BSM) OFF SWITCH INSPECTION.) • Is there any malfunction? | Yes | Replace the cluster switch, then go to Step 8. (See CLUSTER SWITCH REMOVAL/INSTALLATION.)
No | Go to the next step.
4 | 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 8.
No | Go to the next step.
5 | INSPECT BSM OFF SWITCH SIGNAL CIRCUIT FOR SHORT TO GROUND • Verify that the BSM OFF switch and BSM control module (RH) connectors are disconnected. • Inspect for continuity between BSM OFF switch terminal I (L.H.D.)/C (R.H.D.) (wiring harness-side) and body ground. • Is there continuity? | Yes | Repair or replace the wiring harness which has a short to ground, then go to Step 8.
No | Go to the next step.
6 | INSPECT BSM CONTROL MODULE (LH) CONNECTOR • 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 8.
No | Go to the next step.
7 | INSPECT BSM CONTROL MODULE (LH) GROUND CIRCUIT FOR OPEN CIRCUIT • Verify that the BSM OFF switch, BSM control module (LH) and (RH) connectors are disconnected. • Inspect for continuity between BSM control module (LH) terminal E (wiring harness-side) and body ground. • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the wiring harness which has an open circuit, then go to the next step.
8 | 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].) • 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.
9 | 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.