No.5 RVM WARNING INDICATOR LIGHT DOES NOT ILLUMINATE UNDER ILLUMINATION CONDITIONS [REAR VEHICLE MONITORING SYSTEM]

id0903z7994400

Description

• RVM warning indicator light flashes/does not illuminate despite satisfying the conditions to illuminate RVM warning indicator light (vehicle speed above 60 km/h {37 mph}, turn signals off, and vehicle in detection area).

Possible Causes

• Rear vehicle monitoring control modules false-detect that a vehicle is outside detection area when it is actually inside of it, or cannot determine that no 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 installation 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

― Rear vehicle monitoring control module radar does not receive echo-back correctly

• Rear vehicle monitoring control module 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-detects vehicle speed as being within 55 km/h {34 mph} constantly)

― Communication error between PCM and rear vehicle monitoring control module (RH)

― ABS wheel-speed sensor malfunction

• Rear vehicle monitoring control modules false-detect that vehicle is traveling on gentle curve (small curvature).

― Yaw rate signal malfunction

• Communication error between DSC HU/CM and rear vehicle monitoring control module (RH)

• Communication error between rear vehicle monitoring control modules (RH and LH)

• Yaw rate sensor (combined sensor) malfunction

• RVM warning indicator light illumination related malfunction

― RVM warning indicator light malfunction

― Rear vehicle monitoring control module (LH) malfunction (warning light illumination circuit disabled)

― Communication error between rear vehicle monitoring control modules (RH and LH) (Rear vehicle monitoring control module (LH) does not receive illumination request from rear vehicle monitoring control module (RH))

• Rear vehicle monitoring control modules false-detect that turn signals are on.

― Communication error between BCM and rear vehicle monitoring control module (RH)

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 [MZR-CD 2.2].)

(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)

•  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 [MZR-CD 2.2].)

(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)

No

Go to the next step.

2

DETERMINE IF MALFUNCTION CAUSE IS RVM WARNING LIGHT (AMBER) OR RVM WARNING INDICATOR LIGHT ILLUMINATION CIRCUIT

•  Monitor the following rear vehicle monitoring system PIDs using the M-MDS:
(See PID/DATA MONITOR INSPECTION [REAR VEHICLE MONITORING SYSTEM].)

―  WRN_IND_R

―  WRN_IND_L

•  Drive the vehicle under the RVM warning indicator light-illumination conditions.

•  Does the monitored value turn on?

Yes

Go to Step 4.

No

Go to the next step.

3

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 A and rear vehicle monitoring control module (LH) terminal D

―  Wiring harness between RVM warning indicator light (RH) terminal B and rear vehicle monitoring control module (LH) terminal C

RVM warning indicator light (LH) related:

―  RVM warning indicator light (LH)

―  Wiring harness between RVM warning indicator light (LH) terminal A and rear vehicle monitoring control module (LH) terminal K

―  Wiring harness between RVM warning indicator light (LH) terminal B and rear vehicle monitoring control module (LH) terminal G

•  Is any malfunction verified?

Yes

Repair or replace the malfunctioning part.

No

Replace the rear vehicle monitoring control module (LH).

(See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)

4

DETERMINE IF MALFUNCTION CAUSE IS INPUT SIGNAL OR REAR VEHICLE MONITORING CONTROL MODULES 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 7.

No

•  If the VSPD monitoring value is not normal, go to the next step.

•  If the YAW_RATE monitoring value is not normal, go to Step 7.

5

INSPECT VEHICLE SPEED SIGNAL

•  Monitor the PID VSS for the PCM using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].)

•  Are the monitoring values normal?

Yes

Replace the rear vehicle monitoring control module (RH).

(See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)

No

Inspect the ABS wheel speed sensor related parts.

(See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

(See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)

6

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.)

7

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.)

8

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.

9

VERIFY IF MALFUNCTION CAUSE IS AFTER-MARKET ELECTRONIC DEVICE INSTALLATION

•  Disconnect the non-genuine, after-market electronic device connectors.

•  Verify if 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 the after-market electronic device 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.

(See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)

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 [MZR-CD 2.2].) (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) • 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 [MZR-CD 2.2].) (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
1		No	Go to the next step.
2	DETERMINE IF MALFUNCTION CAUSE IS RVM WARNING LIGHT (AMBER) OR RVM WARNING INDICATOR LIGHT ILLUMINATION CIRCUIT • Monitor the following rear vehicle monitoring system PIDs using the M-MDS: (See PID/DATA MONITOR INSPECTION [REAR VEHICLE MONITORING SYSTEM].) ― WRN_IND_R ― WRN_IND_L • Drive the vehicle under the RVM warning indicator light-illumination conditions. • Does the monitored value turn on?	Yes	Go to Step 4.
2		No	Go to the next step.
3	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 A and rear vehicle monitoring control module (LH) terminal D ― Wiring harness between RVM warning indicator light (RH) terminal B and rear vehicle monitoring control module (LH) terminal C RVM warning indicator light (LH) related: ― RVM warning indicator light (LH) ― Wiring harness between RVM warning indicator light (LH) terminal A and rear vehicle monitoring control module (LH) terminal K ― Wiring harness between RVM warning indicator light (LH) terminal B and rear vehicle monitoring control module (LH) terminal G • Is any malfunction verified?	Yes	Repair or replace the malfunctioning part.
3		No	Replace the rear vehicle monitoring control module (LH). (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
4	DETERMINE IF MALFUNCTION CAUSE IS INPUT SIGNAL OR REAR VEHICLE MONITORING CONTROL MODULES 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 7.
4		No	• If the VSPD monitoring value is not normal, go to the next step. • If the YAW_RATE monitoring value is not normal, go to Step 7.
5	INSPECT VEHICLE SPEED SIGNAL • Monitor the PID VSS for the PCM using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].) • Are the monitoring values normal?	Yes	Replace the rear vehicle monitoring control module (RH). (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
5		No	Inspect the ABS wheel speed sensor related parts. (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.) (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)
6	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.)
6		No	Replace the combined sensor. (See COMBINED SENSOR REMOVAL/INSTALLATION.)
7	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.
7		No	Repair or replace the malfunctioning part, or replace the rear bumper. (See REAR BUMPER REMOVAL/INSTALLATION.)
8	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.
8		No	Repair or replace the malfunctioning part.
9	VERIFY IF MALFUNCTION CAUSE IS AFTER-MARKET ELECTRONIC DEVICE INSTALLATION • Disconnect the non-genuine, after-market electronic device connectors. • Verify if the malfunction symptom recurs as stated by the customer. • Does the malfunction recur?	Yes	Go to the next step.
9		No	Explain to the customer that the malfunction occurred due to the after-market electronic device 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.)
10		No	Replace the rear vehicle monitoring control module. (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)