RVM WARNING INDICATOR LIGHT ILLUMINATES WHILE NOT UNDER ILLUMINATION CONDITIONS [REAR VEHICLE MONITORING SYSTEM]

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Note

•  If there is any vehicle malfunction complaint lodged by a customer, perform FOREWORD [REAR VEHICLE MONITORING SYSTEM] malfunction diagnosis according to the troubleshooting procedure. (See FOREWORD [REAR VEHICLE MONITORING SYSTEM].)

Description	RVM warning indicator light illuminates while not under illumination conditions
	•  The RVM warning indicator light illuminates without satisfying its illumination conditions (vehicle speed is 30 km/h {19 mph} or more, turn-signals are off, and a vehicle is in the detection area).
Possible Causes	Note •  The detection performance of the rear vehicle monitoring control module has limitations and the Rear vehicle monitoring system may not operate normally. For the detection performance limitations, refer to the [REAR VEHICLE MONITORING CONTROL MODULE] in the technical guide. •  Rear vehicle monitoring control modules false-detect that a vehicle is inside detection area when it is actually outside of it, or cannot determine that a vehicle is entering blind-spot area. ―  Rear vehicle monitoring control module radar is not emitted inside detection area (deviates from blind-spot area or adjacent lanes) •  Damage, deformity or looseness to rear vehicle monitoring bracket or vehicle frame (including moderate impacts) •  Incorrect installation of rear bumper, soiling to radar emitting/receiving area, application of stickers (including transparent types), repairs using putty application ―  Effect of non-genuine, after-market electronic device installation Note •  The radar sensor cannot receive echo-back correctly if there is a thick moisture film (such as condensation) or excessive soiling covering the rear bumper radar emitting/receiving areas. •  Non-genuine rear bumper or paint, or installation of after-market parts may negatively affect radar echo-back ability. •  RVM warning indicator light illumination circuit disabled ―  Rear vehicle monitoring control module (RH) internal malfunction (RVM warning indicator light illumination circuit disabled) ―  Rear vehicle monitoring control module (LH) malfunction (outputs incorrect illumination request)

Diagnostic Procedure

Warning

•  When performing a road test, always verify the safety of the surrounding area before performing the test.

•  Do not perform a road test at a speed which exceeds the legal speed limit.

•  To assure safety, perform a road test using two people when the vehicle is being driven. (One drives the vehicle and the other operates the M-MDS.)

Step	Inspection		Action
1	VERIFY REAR BUMPER CONDITION •  Inspect the rear bumper at the rear vehicle monitoring control modules installation areas for the following: ―  Installation condition ―  Application of stickers (including transparent types) ―  Excessive soiling ―  Repairs using putty •  Is the rear bumper condition normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning part, or replace the rear bumper. (See REAR BUMPER REMOVAL/INSTALLATION.)
2	VERIFY INSTALLATION CONDITION OF REAR VEHICLE MONITORING CONTROL MODULES •  Remove the rear bumper. (See REAR BUMPER REMOVAL/INSTALLATION.) •  Inspect the installation condition of the rear vehicle monitoring control modules for the following: ―  Looseness ―  Damage or deformity to the bracket ―  Distortion at vehicle installation surface •  Is the rear vehicle monitoring control modules installation condition normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location.
3	VERIFY IF MALFUNCTION CAUSE IS AFTER-MARKET ELECTRONIC DEVICE INSTALLATION •  Disconnect the non-genuine, after-market electronic device connectors. •  Verify if malfunction symptom recurs as stated by customer. •  Does the malfunction recur?	Yes	Go to the next step.
		No	Explain to the customer that the malfunction occurred due to the after-market electronic device installation.
4	VERIFY IF MALFUNCTION CAUSE IS RVM PROXIMITY INDICATOR LIGHT ILLUMINATION CIRCUIT RELATED •  Turn the following rear vehicle monitoring system active command mode items on and off using the M-MDS active command mode. (See ACTIVE COMMAND MODES INSPECTION [REAR VEHICLE MONITORING SYSTEM].) ―  WRN_IND_R ―  WRN_IND_L •  Does the RVM warning indicator light illuminate/turn off?	Yes	Go to Step 6.
		No	Go to the next step.
5	DETERMINE IF MALFUNCTION CAUSE IS REAR VEHICLE MONITORING CONTROL MODULES OR RVM WARNING INDICATOR LIGHTS •  Inspect the following: RVM warning indicator light (RH) related: ―  RVM warning indicator light (RH) ―  Wiring harness between RVM warning indicator light (RH) terminal G and rear vehicle monitoring control module (RH) terminal I ―  Wiring harness between RVM warning indicator light (RH) terminal H and rear vehicle monitoring control module (RH) terminal H RVM warning indicator light (LH) related: ―  RVM warning indicator light (LH) ―  Wiring harness between RVM warning indicator light (LH) terminal G and rear vehicle monitoring control module (RH) terminal B ―  Wiring harness between RVM warning indicator light (LH) terminal H and rear vehicle monitoring control module (RH) terminal F •  Is any malfunction verified?	Yes	•  Refer to the wiring diagram and verify whether or not there is a mid-connector between the RVM warning indicator light and rear vehicle monitoring control module. If there is a mid-connector ―  Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a a open circuit or short to ground. ―  Repair or replace the wiring harness which has a malfunction. If there is no mid-connector ―  Repair or replace the wiring harness which has a malfunction.
		No	Replace the rear vehicle monitoring control module (RH). (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
6	INSPECT REAR VEHICLE MONITORING CONTROL MODULES •  Inspect the malfunctioning rear vehicle monitoring control module. (See REAR VEHICLE MONITORING CONTROL MODULE INSPECTION.) •  Is the rear vehicle monitoring control module normal?	Yes	Temporary malfunction with the radar echo-back. If the same symptom recurs repeatedly, replace the rear vehicle monitoring control module. (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
		No	Replace the applicable rear vehicle monitoring control module. (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)