BRIGHTNESS LEVEL OF RVM WARNING INDICATOR LIGHTS IS TOO HIGH OR LOW [REAR VEHICLE MONITORING SYSTEM]

id0903z7014700

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.

Description

• The brightness level of the RVM warning indicator light is low in the daytime (headlights off) (correct level at night).

• The brightness level of the RVM warning indicator light is high at night (headlights on) (correct level in the daytime).

Possible malfunction

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.

• The rear view monitoring control module (LH) cannot receive the TNS switch signal.

― TNS switch (light switch) malfunction (stuck)

― Instrument cluster malfunction

― Rear vehicle monitoring control module malfunction

Diagnostic Procedure

Step

Inspection

Action

1

DETERMINE IF MALFUNCTION CAUSE IS 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].)

―  OP_BRT_R

―  OP_BRT_L

•  Turn the headlight switch (TNS switch) on/off.

Note

•  While the headlights turned on, the PID monitoring value increases (brighter).

•  Does the PID display value change according to the operation of the headlight switch?

Yes

Replace the rear vehicle monitoring control module (LH).

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

No

Go to the next step.

2

INSPECT LIGHT SWITCH

•  Inspect the light switch.
(See LIGHT SWITCH INSPECTION.)

•  Is the light switch normal?

Yes

Go to the next step.

No

Replace the light switch.

(See LIGHT SWITCH REMOVAL/INSTALLATION.)

3

DETERMINE IF MALFUNCTION CAUSE IS INSTRUMENT CLUSTER OR REAR VEHICLE MONITORING CONTROL MODULE (LH)

•  Display the instrument cluster PID I_ILLUMI_M item using the M-MDS.
(See PID/DATA MONITOR INSPECTION [INSTRUMENT CLUSTER].)

•  Turn the headlight switch (TNS switch) on/off.

•  Does the PID/data monitor display switch normally?

Yes

Replace the rear vehicle monitoring control module (LH).

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

No

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

Step	Inspection		Action
1	DETERMINE IF MALFUNCTION CAUSE IS 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].) ― OP_BRT_R ― OP_BRT_L • Turn the headlight switch (TNS switch) on/off. Note • While the headlights turned on, the PID monitoring value increases (brighter). • Does the PID display value change according to the operation of the headlight switch?	Yes	Replace the rear vehicle monitoring control module (LH). (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
1		No	Go to the next step.
2	INSPECT LIGHT SWITCH • Inspect the light switch. (See LIGHT SWITCH INSPECTION.) • Is the light switch normal?	Yes	Go to the next step.
2		No	Replace the light switch. (See LIGHT SWITCH REMOVAL/INSTALLATION.)
3	DETERMINE IF MALFUNCTION CAUSE IS INSTRUMENT CLUSTER OR REAR VEHICLE MONITORING CONTROL MODULE (LH) • Display the instrument cluster PID I_ILLUMI_M item using the M-MDS. (See PID/DATA MONITOR INSPECTION [INSTRUMENT CLUSTER].) • Turn the headlight switch (TNS switch) on/off. • Does the PID/data monitor display switch normally?	Yes	Replace the rear vehicle monitoring control module (LH). (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
3		No	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)