RCTA INDICATOR LIGHT DOES NOT FLASHES WHILE UNDER RCTA INDICATOR LIGHT-FLASHING CONDITIONS [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE]

id0903n2018900

Description | RCTA indicator light does not flash under flash conditions
• The RCTA indicator light does not flash even though under RCTA indicator light flash conditions (R position), and target vehicle detection).
Possible Causes | • BSM control module mis-detects another vehicle or mis-estimates the time that another vehicle will reach the detection line ― Deviation of radar emission direction in BSM control module (emits radar outside of blind spot, or to adjacent lane) • Damage, deformity or looseness of vehicle frame (including moderate impacts) • Incorrect installation of rear bumper, dirt on radar emitting/receiving area, application of stickers (including transparent types), repairs using putty application ― Effect of non-genuine, after-market electronic device installation Note • If there is a thick moisture film (such as condensation) on the rear bumper, the BSM control module may not receive echo-back correctly. • The BSM control module may not receive echo-back correctly due to the negative effect of a non-genuine bumper or paint, or installation of after-market parts. • RCTA indicator light flash circuit malfunction ― Audio unit (with color LCD display) internal malfunction (RCTA indicator light flash circuit malfunction) ― BSM control module (LH) internal malfunction (RCTA indicator light flash circuit malfunction) ― BSM control module (LH) malfunction (mistaken flash request output)

Diagnostic Procedure

Step | Inspection | Action
--- | --- | ---
1 | DETERMINE IF MALFUNCTION CAUSE IS RCTA INDICATOR LIGHT • Verify the flash of the BSM indicator light. • Does the BSM indicator light flash under RCTA indicator light flash conditions? | Yes | Go to the next step.
No | Go to the symptom troubleshooting BSM INDICATOR LIGHT DOES NOT ILLUMINATE WHILE UNDER BSM INDICATOR LIGHT-ILLUMINATION CONDITIONS.. (See BSM INDICATOR LIGHT DOES NOT ILLUMINATE WHILE UNDER BSM INDICATOR LIGHT-ILLUMINATION CONDITIONS [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].)
2 | VERIFY RCTA INDICATOR LIGHT FLASH CIRCUIT SYSTEM • Turn the following BSM active command items on and off using the M-MDS active command. (See ACTIVE COMMAND MODES INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].) ― RCTA_WARN • Is the RCTA indicator light illuminated/turned off? | Yes | Go to Step 4.
No | Go to the next step.
3 | VERIFY REAR VIEW MONITOR DISPLAY • Switch the ignition ON (engine off or on). • Shift to R position. • Is the rear view monitor displayed in the LCD of the audio unit? | Yes | Go to the next step.
No | Go to the symptom troubleshooting NO.11 DISPLAY DOES NOT CHANGE TO THE REAR MOUNT CAMERA IMAGE. (See NO.11 DISPLAY DOES NOT CHANGE TO THE REAR MOUNT CAMERA IMAGE [ENTIRE AUDIO SYSTEM].)
4 | INSPECT BSM CONTROL MODULE • Inspect the BSM control module on the side that is malfunctioning. (See BLIND SPOT MONITORING (BSM) CONTROL MODULE INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].) • Is the BSM control module normal? | Yes | The possibility that the BSM control module was temporarily unable to receive echo-back correctly can be considered. If the same symptom recurs repeatedly, replace the BSM control module. (See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].)
No | Replace the BSM control module. (See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].)