Diagnostic Procedure

BRIGHTNESS OF BLIND SPOT MONITORING (BSM) WARNING LIGHT IS TOO BRIGHT OR TOO DARK [BLIND SPOT MONITORING (BSM) SYSTEM] DIAGNOSTICE PROCEDURE

Step	Inspection		Action
1	VERIFY MALFUNCTION (TNS SIGNAL CONDITION) Display the instrument cluster PID I_ILLUMI_M item using the M-MDS. (See PID/DATA MONITOR INSPECTION [INSTRUMENT CLUSTER] .) Is the PID On (Night) indicated when the light switch is in the TNS position?	Yes	Go to Step 3.
1		No	Go to the next step.
2	INSPECT LIGHT SWITCH Inspect the light switch. (See LIGHT SWITCH INSPECTION .) Is the light switch normal?	Yes	Perform the DTC inspection for the start stop unit, instrument cluster and the blind spot monitoring (BSM) control module. (See DTC INSPECTION [START STOP UNIT] .) (See DTC INSPECTION [INSTRUMENT CLUSTER] .) (See DTC INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE] .)
2		No	Replace the light switch. (See LIGHT SWITCH REMOVAL/INSTALLATION .)
3	VERIFY MALFUNCTION (BRIGHTNESS CONDITION) Display the following blind spot monitoring (BSM) system PIDs and simulation items using the M-MDS: (See PID/DATA MONITOR INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE] .) (See ACTIVE COMMAND MODES INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE] .) PID OP_BRT_R OP_BRT_L Simulation item WRN_IND_R WRN_IND_L NOTE: If the blind spot monitoring (BSM) indicator light was turned on by the simulation function, the blind spot monitoring (BSM) indicator light luminosity becomes 92%. Does the PID value indicate 92% when the simulation item is turned on?	Yes	NOTE: If the blind spot monitoring (BSM) system is operating normally, the luminosity of the blind spot monitoring (BSM) indicator light will change according to the light switch condition. Light switch in TNS position: 70% Light switch in position except TNS: 92% Explain to the customer that the system is normal.
3		No	Replace the blind spot monitoring (BSM) control module (LH). (See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION .)