Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Side Camera Current Malfunction (C1684)

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual / Audio & Visual & Telematics / Park Assist / Monitoring / Panoramic View Monitor System / Side Camera Current Malfunction (C1684)

DESCRIPTION

This DTC is stored if the parking assist ECU judges as a result of its self check that a synchronization problem is occurring in the image signal sent from the passenger side television camera assembly to the parking assist ECU.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1684

Side Camera Current Malfunction

Side camera current malfunction
  • Harness or connector
  • Parking assist ECU
  • Outer rear view mirror assembly RH
    • Side television camera assembly RH
    • Outer mirror retractor RH*
  • *: w/ Power Retract Mirror

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When "!" is displayed on the multi-display assembly after the cable is disconnected from the negative (-) battery terminal, correct the steering angle neutral point.

    Click here

  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the panoramic view monitor system may be needed.

    Click here

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Chassis > Circumference Monitoring Camera Control Module > Clear DTCs

(b) Check for DTCs.

Chassis > Circumference Monitoring Camera Control Module > Trouble Codes

OK:

DTC C1684 is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - OUTER REAR VIEW MIRROR ASSEMBLY RH)

(a) Disconnect the J158 parking assist ECU connector.

(b) Disconnect the M1 outer rear view mirror assembly RH connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

J158-40 (RCB+) - M1-2 (RCB+)

Always

Below 1 Ω

J158-17 (RGND) - M1-1 (RGND)

Always

Below 1 Ω

J158-40 (RCB+) or M1-2 (RCB+) - Body ground

Always

10 kΩ or higher

J158-17 (RGND) or M1-1 (RGND) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

CHECK PARKING ASSIST ECU (RCB+, RGND)

(a) Connect the J158 parking assist ECU connector.

*a

Component with harness connected

(Parking Assist ECU)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

J158-17 (RGND) - Body ground

Always

Below 1 Ω

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

J158-40 (RCB+) - J158-17 (RGND)

Engine switch on (IG)

5.5 to 7.05 V
NG

REPLACE PARKING ASSIST ECU

OK

4.

REPLACE SIDE TELEVISION CAMERA ASSEMBLY RH

(a) Replace the side television camera assembly RH with a new or normally functioning one.

Click here

NEXT

5.

CHECK FOR DTC

(a) Clear the DTCs.

Chassis > Circumference Monitoring Camera Control Module > Clear DTCs

(b) Check for DTCs.

Chassis > Circumference Monitoring Camera Control Module > Trouble Codes

OK:

DTCs C1684 is not output.

Result

Proceed to

OK

A

NG (w/ Power Retract Mirror)

B

NG (w/o Power Retract Mirror)

C
A

END (SIDE TELEVISION CAMERA ASSEMBLY RH WAS DEFECTIVE)
B

REPLACE OUTER MIRROR RETRACTOR RH

C

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

    Side Camera Feedback Malfunction (C1683)
    DESCRIPTION This DTC is stored if the parking assist ECU judges as a result of its self check that a synchronization problem is occurring in the image signal sent from the passenger side television ca ...

    Driver Side Camera Video Sync Signal Malfunction (C1686)
    DESCRIPTION This DTC is stored if the parking assist ECU judges as a result of its self check that a synchronization problem is occurring in the image signal sent from the driver side television camer ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Telematics System: Parts Location
    PARTS LOCATION ILLUSTRATION *1 TELEPHONE AND GPS ANTENNA (for Roof Side) - GPS - Telephone Main *2 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *3 AIR CONDITIONING AMPLIFIER ASSEMBLY *4 CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) *5 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - D ...

    Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Dynamic Torque Control Awd System: Linear Solenoid Power Supply System Malfunction (C120C)
    DESCRIPTION This DTC is output by the 4WD ECU assembly if a malfunction occurs in the linear solenoid power supply system. DTC No. Detection Item DTC Detection Condition Trouble Area C120C Linear Solenoid Power Supply System Malfunction When the 4WD relay is operating, the 4WD re ...

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

    © 2026 Copyright www.lexusrx.net
    0.0104