DTC B118C:11 [BLIND SPOT MONITORING (BSM)]


id0902i3354500

System malfunction location

BSM indicator light (LH) circuit malfunction

Detection condition
•  While the BSM indicator light (LH) is operated, the BSM control module (LH) monitors the BSM indicator light (LH) load voltage. Increase in the monitored BSM indicator light (LH) load voltage is the specified value or more, and the BSM control module (LH) determined that there is a short to ground in the BSM indicator light (LH) circuit.
Fail-safe
•  BSM is stopped.
Possible cause
•  Malfunction in power outer mirror (LH) connector or terminal
•  Malfunction in BSM control module (LH) connector or terminal
•  Short to ground in wiring harness between BSM control module (LH) terminal D and power outer mirror (LH) terminal D
•  Power outer mirror (LH) malfunction
•  BSM indicator light (LH) malfunction
•  BSM control module (LH) malfunction

Diagnostic Procedure

Step

Inspection

Action

1
INSPECT POWER OUTER MIRROR (LH) CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the power outer mirror (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 6.
2
INSPECT BSM CONTROL MODULE (LH) CONNECTOR CONDITION
•  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 6.
3
INSPECT BSM INDICATOR LIGHT (LH) CIRCUIT FOR SHORT TO GROUND
•  Verify that the BSM control module (LH) and power outer mirror (LH) connectors are disconnected.
•  Inspect for continuity between power outer mirror (LH) terminal D (vehicle wiring harness side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness which is shorted to ground, then go to Step 6.
No
Go to the next step.
4
INSPECT POWER OUTER MIRROR (LH)
•  Inspect the power outer mirror (LH).
•  Is the power outer mirror (LH) normal?
Yes
Go to the next step.
No
Replace the power outer mirror (LH), then go to Step 6.
5
INSPECT BSM INDICATOR LIGHT (LH)
•  Inspect the BSM indicator light (LH).
•  Is the BSM indicator light (LH) normal?
Yes
Go to the next step.
No
Replace the outer mirror glass (LH), then go to the next step.
6
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Reconnect all the disconnected connectors.
•  Clear the BSM control module (LH) DTCs using the M-MDS.
•  Perform the DTC inspection for the BSM control module (LH) using the M-MDS.
•  Is DTC B118C:11 displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the BSM control module (LH), then go to the next step.
No
Go to the next step.
7
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair the malfunctioning part according to the applicable DTC troubleshooting.
No
DTC troubleshooting completed.