DTC B118C:15 [BLIND SPOT MONITORING (BSM)]

id0902i3354600

Description

BSM indicator light (LH) circuit malfunction

Detection condition

•  BSM control module (LH) performs measurement at 0.01 s intervals and an open circuit or short to power supply in the BSM indicator light (LH) circuit is detected 48 times continuously.

Fail-safe function

•  Blind spot monitoring (BSM) system is stopped.

Possible cause

•  Power outer mirror (LH) connector or terminal malfunction

•  Open circuit in wiring harness between power outer mirror (LH) terminal G and body ground

•  BSM control module (LH) connector or terminal malfunction

•  Short to power supply in wiring harness between BSM control module (LH) terminal G and power outer mirror (LH) terminal D

•  Power outer mirror (LH) malfunction

•  BSM indicator light (LH) malfunction

•  Open circuit in wiring harness between BSM control module (LH) terminal G and power outer mirror (LH) terminal D

•  BSM control module (LH) malfunction

Description	BSM indicator light (LH) circuit malfunction
Detection condition	• BSM control module (LH) performs measurement at 0.01 s intervals and an open circuit or short to power supply in the BSM indicator light (LH) circuit is detected 48 times continuously.
Fail-safe function	• Blind spot monitoring (BSM) system is stopped.
Possible cause	• Power outer mirror (LH) connector or terminal malfunction • Open circuit in wiring harness between power outer mirror (LH) terminal G and body ground • BSM control module (LH) connector or terminal malfunction • Short to power supply in wiring harness between BSM control module (LH) terminal G and power outer mirror (LH) terminal D • Power outer mirror (LH) malfunction • BSM indicator light (LH) malfunction • Open circuit in wiring harness between BSM control module (LH) terminal G and power outer mirror (LH) terminal D • BSM control module (LH) malfunction

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT POWER OUTER MIRROR (LH) CONNECTOR CONDITION • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • 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.
1		No	Repair or replace the connector, then go to Step 8.
2	INSPECT FOR OPEN CIRCUIT IN BSM INDICATOR LIGHT (LH) GROUND CIRCUIT • Verify that the power outer mirror (LH) connector is disconnected. • Inspect for continuity between power outer mirror (LH) terminal G (wiring harness-side) and body ground. • Is there continuity?	Yes	Go to the next step.
2		No	Refer to the wiring diagram and verify whether or not there is a common connector between power outer mirror (LH) terminal G and body ground. 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 Step 8.
3	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.
3		No	Repair or replace the connector, then go to Step 8.
4	INSPECT FOR SHORT TO POWER SUPPLY IN BSM INDICATOR LIGHT (LH) SIGNAL CIRCUIT • Verify that the BSM control module (LH) and power outer mirror (LH) connectors are disconnected. • Reconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • Switch the ignition ON (engine off or on). • Measure the voltage at the power outer mirror (LH) terminal D (wiring harness-side). • Is the voltage 0 V?	Yes	Go to the next step.
4		No	Refer to the wiring diagram and verify whether or not there is a common connector between BSM control module (LH) terminal G and power outer mirror (LH) terminal D. 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 power supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to power supply. Go to Step 8.
5	INSPECT POWER OUTER MIRROR (LH) • Inspect the power outer mirror (LH). (See POWER OUTER MIRROR INSPECTION.) • Is the power outer mirror (LH) normal?	Yes	Go to the next step.
5		No	Replace the power outer mirror (LH), then go to Step 8. (See POWER OUTER MIRROR REMOVAL/INSTALLATION.)
6	INSPECT BSM INDICATOR LIGHT (LH) • Inspect the BSM indicator light (LH). (See OUTER MIRROR GLASS INSPECTION.) • Is the BSM indicator light (LH) normal?	Yes	Go to the next step.
6		No	Replace the outer mirror glass (LH), then go to Step 8. (See OUTER MIRROR GLASS REMOVAL.) (See OUTER MIRROR GLASS INSTALLATION.)
7	INSPECT FOR OPEN CIRCUIT IN BSM INDICATOR LIGHT (LH) SIGNAL CIRCUIT • Verify that the BSM control module (LH) and power outer mirror (LH) connectors are disconnected. • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • Inspect for continuity between BSM control module (LH) terminal G (wiring harness-side) and power outer mirror (LH) terminal D (wiring harness-side). • Is there continuity?	Yes	Go to the next step.
7		No	Refer to the wiring diagram and verify whether or not there is a common connector between BSM control module (LH) terminal G and power outer mirror (LH) terminal D. 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.
8	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Always reconnect all disconnected connectors. • Reconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • Clear the BSM control module (LH) DTCs using the M-MDS. (See CLEARING DTC [BLIND SPOT MONITORING (BSM)].) • Retrieve the BSM control module (LH) DTCs using the M-MDS. (See DTC INSPECTION [BLIND SPOT MONITORING (BSM)].) • Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the BSM control module (LH). (See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION.) Go to the next step.
8		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)].)
9		No	DTC troubleshooting completed.