NO.5 BSM INDICATOR LIGHT DOES NOT ILLUMINATE WHILE UNDER BSM INDICATOR LIGHT-ILLUMINATION CONDITIONS [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE]
id0903n1990800
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5
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BSM indicator light does not illuminate while under BSM indicator light-illumination conditions
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DESCRIPTION
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• The BSM indicator light does not illuminate despite satisfying the conditions to illuminate the BSM indicator light (vehicle speed above 32 km/h {20 mph}, turn signals off, and vehicle in warning zone).
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Possible Causes
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• The BSM control module mistakenly recognizes a vehicle as being outside of the warning zone when it actually inside of it.
• BSM control module (radar) malfunction
• Problem with rear bumper such as soiling to radar emitting/receiving area, application of stickers (including transparent types), repairs using putty application.
• BSM control module does not recognize vehicle speed correctly (BSM control module mistakenly recognizes vehicle speed as being within 32 km/h {20 mph}
• Malfunction in BSM indicator light related parts
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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VERIFY DTCs
• Retrieve DTCs from the BSM control module, BCM, PCM, and TCM using the M-MDS.
(See DTC INSPECTION [BCM].)
• Are any DTCs displayed?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [BCM].)
(See DTC TABLE [MZI-3.7].)
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No
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Go to the next step.
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2
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INSPECT IF MALFUNCTION IS IN INPUT SIGNAL OR BSM CONTROL MODULE
• Monitor the following PIDs on the suspected side of the BSM control module using the M-MDS.
• Is the monitoring value normal?
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Yes
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Go to Step 5.
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No
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• If the PID VSPD monitoring value is normal, go to the next step.
• If the PID VSPD monitoring value is not normal, go the Step 4.
• If the PID SHIFT_R monitoring value is not normal, go the Step 5.
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3
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INSPECT VEHICLE SPEED SIGNAL
• Monitor the PID VSS for the PCM using the M-MDS.
• Is the monitoring value normal?
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Yes
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Replace the BSM control module.
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No
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Inspect the ABS wheel-speed sensor related parts.
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4
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INSPECT STEERING ANGLE SIGNAL
• Monitor the PID SWA_POS for the DSC/RSC HU/CM using the M-MDS.
(See ON-BOARD DIAGNOSIS [DSC/RSC].)
• Is the monitoring value normal?
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Yes
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Replace the BCM.
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No
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• Inspect the steering angle signal.
• Perform steering angle sensor initialization.
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5
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INSPECT TRANSAXLE POSITION SIGNAL
• Monitor the PID SWA_POS for the DSC/RSC HU/CM using the M-MDS.
(See ON-BOARD DIAGNOSIS [DSC/RSC].)
• Is the monitoring value normal?
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Yes
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Replace the BSM control module.
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No
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Inspect the transaxle range switch.
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6
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INSPECT REAR BUMPER
• Inspect the rear bumper at the BSM installation area for the following:
• Is the rear bumper condition normal?
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Yes
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Go to the next step.
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No
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Repair or replace malfunctioning parts, or replace the rear bumper.
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7
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VERIFY THE CONDITION OF THE BSM CONTROL MODULE
• Remove the rear bumper.
• Inspect the BSM control module for the following:
• Is the BSM control module installation condition normal?
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Yes
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Go to the next step.
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No
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Repair or replace the malfunctioning part.
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8
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VERIFY IF CAUSE OF MALFUNCTION IS IN AFTER-MARKET ELECTRICAL PRODUCT OR ELSEWHERE
• Remove the after-market electrical product.
• Verify that the malfunction symptom recurs as stated by the customer.
• Does the malfunction symptom recur?
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Yes
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Go to the next step.
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No
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The after-market electrical product is causing the malfunction.
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9
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INSPECT BSM CONTROL MODULE (RADAR)
• Inspect the BSM control module.
• Is the BSM control module normal?
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Yes
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Temporary malfunction with the radar echo-back.
If the same symptom recurs repeatedly, replace the BSM control module.
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No
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Replace the BSM control module.
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