No.4 RVM WARNING INDICATOR LIGHT ILLUMINATES WHILE NOT UNDER ILLUMINATION CONDITIONS [REAR VEHICLE MONITORING SYSTEM]SM2446176
No.4 RVM WARNING INDICATOR LIGHT ILLUMINATES WHILE NOT UNDER ILLUMINATION CONDITIONS [REAR VEHICLE MONITORING SYSTEM]

id0903z7994300

4

RVM warning indicator light illuminates while not under illumination conditions
DESCRIPTION
• RVM warning indicator light illuminates although illumination conditions ( vehicle speed above 60 km/h {37 mph}, turn signals off, and vehicle in detection area) are not satisfied.
POSSIBLE CAUSES
• 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 of 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)
• Yaw rate signal error (communication error between DSC HU/CM and rear vehicle monitoring control module (RH), communication error between rear vehicle monitoring control modules (RH and LH), or combined sensor malfunction)
• 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.
• Rear vehicle monitoring control modules do not detect vehicle speed correctly (false detection of vehicle speed as being above 60 km/h {37 mph} constantly).
― Communication error between PCM and rear vehicle monitoring control module (RH)
― ABS wheel-speed sensor malfunction
• RVM warning indicator light illumination circuit disabled
― Rear vehicle monitoring control module (LH) internal malfunction (RVM warning indicator light illumination circuit disabled)
― Rear vehicle monitoring control module (RH) 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.
• 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.)
• Do not perform a road test at a speed which exceeds the legal speed limit.

Step

Inspection

Action
1
VERIFY DTCs
• Retrieve DTCs from the rear vehicle monitoring system, PCM, DSC, and instrument cluster using the M-MDS. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].) (See DTC INSPECTION [INSTRUMENT CLUSTER].) (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].) (See ON-BOARD DIAGNOSIS.)
• Are any DTCs displayed?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [REAR VEHICLE MONITORING SYSTEM].)
(See DTC TABLE [INSTRUMENT CLUSTER].)
(See DTC TABLE [L3 Turbo].)
(See DTC TABLE [MZR-CD 2.2].)
(See ON-BOARD DIAGNOSIS.)
No
Go to the next step.
2
DETERMINE IF MALFUNCTION CAUSE IS INPUT SIGNAL OR REAR VEHICLE MONITORING CONTROL MODULE RELATED
• Monitor the following rear vehicle monitoring system PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION [REAR VEHICLE MONITORING SYSTEM].)
― VSPD
― YAW_RATE
• Are the monitoring values normal?
Yes
Go to Step 5.
No
• If VSPD monitor value is not normal, go to the next step.
• If the YAW_RATE monitor value is not normal, go to Step 4.
3
INSPECT VEHICLE SPEED SIGNAL
• Monitor the PID VSS for the PCM using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].)
• Are the monitoring values normal?
Yes
Replace the rear vehicle monitoring control module (RH).
No
Inspect the ABS wheel speed sensor related parts.
(See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)
(See REAR ABS WHEEL-SPEED SENSOR INSPECTION [2WD].)
(See REAR ABS WHEEL-SPEED SENSOR INSPECTION [4WD].)
4 *
INSPECT YAW RATE SIGNAL
• Inspect the yaw rate sensor (combined sensor). (See COMBINED SENSOR INSPECTION.)
• Is the yaw rate sensor normal?
Yes
Replace the rear vehicle monitoring control module (RH).
(See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
No
Replace the combined sensor.
(See COMBINED SENSOR REMOVAL/INSTALLATION [MTX].)
(See COMBINED SENSOR REMOVAL/INSTALLATION [ATX].)
5
VERIFY REAR BUMPER CONDITION
• Inspect the rear bumper at the rear vehicle monitoring control module installation area 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.)
6
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 part.
7
VERIFY IF MALFUNCTION CAUSE IS AFTER-MARKET ELECTRONIC DEVICE INSTALLATION
• Disconnect the non-genuine, after-market electronic device connectors.
• Verify that the malfunction symptom recurs as stated by the customer.
• Does the malfunction recur?
Yes
Go to the next step.
No
Explain to the customer that the malfunction occurred due to after-market electronic device installation.
8
VERIFY IF MALFUNCTION CAUSE IS RVM WARNING INDICATOR LIGHT ILLUMINATION CIRCUIT RELATED
• Switch the ignition to ON.
• Turn on and off the RVM warning indicator light using the following rear vehicle monitoring system active commands by using the M-MDS: (See ACTIVE COMMAND MODES INSPECTION [REAR VEHICLE MONITORING SYSTEM].)
― WRN_IND_R
― WRN_IND_L
• Does RVM warning indicator light turn on and off according to active command?
Yes
Go to Step 10.
No
Go to the next step.
9
DETERMINE IF MALFUNCTION CAUSE IS REAR VEHICLE MONITORING CONTROL MODULES OR RVM WARNING INDICATOR LIGHTS
• Inspect the following:
RVM warning indicator light (RH) related:
― Wiring harness between RVM warning indicator light (RH) terminal B and rear vehicle monitoring control module (LH) terminal J
― Wiring harness between RVM warning indicator light (RH)terminal D and rear vehicle monitoring control module (LH) terminal I
RVM warning indicator light (LH) related:
― Wiring harness between RVM warning indicator light (LH) terminal B and rear vehicle monitoring control module (LH) terminal A
― Wiring harness between RVM warning indicator light (LH) terminal D and rear vehicle monitoring control module (LH) terminal E
• Is any malfunction verified?
Yes
Repair or replace the malfunctioning part.
No
• Replace the rear vehicle monitoringcontrol module (LH). (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
10
INSPECT REAR VEHICLE MONITORING CONTROL MODULES
• Inspect the malfunctioning rear vehicle monitoring control module.
• 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 rear vehicle monitoring control module (RH).
(See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)