Toyota 4Runner manuals

Toyota 4Runner: Back Camera Disconnected (C1622)

DESCRIPTION

This DTC is stored if the radio and display receiver assembly judges that the signals or signal lines between the radio and display receiver assembly, and the rear television camera assembly are not normal as a result of its self check.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1622

Back Camera Disconnected

Open or short in the rear television camera assembly signal circuit

  • Harness or connector
  • Rear television camera assembly
  • Radio and display receiver assembly

WIRING DIAGRAM


PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY)

(a) Disconnect the G50 radio and display receiver assembly connector.

(b) Disconnect the Y2 rear television camera assembly connector.

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

Standard Resistance (Check for Open):

Tester Connection

Condition

Specified Condition

G50-11 (CA+) - Y2-6 (CB+)

Always

Below 1 Ω

G50-12 (V+) - Y2-3 (CV+)

Always

Below 1 Ω

G50-23 (CGND) - Y2-5 (CGND)

Always

Below 1 Ω

G50-24 (V-) - Y2-2 (CV-)

Always

Below 1 Ω

Standard Resistance (Check for Short):

Tester Connection

Condition

Specified Condition

G50-11 (CA+) - Body ground

Always

10 kΩ or higher

G50-12 (V+) - Body ground

Always

10 kΩ or higher

G50-23 (CGND) - Body ground

Always

10 kΩ or higher

G50-24 (V-) - Body ground

Always

10 kΩ or higher


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

2.

INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY

(a) Reconnect the G50 radio and display receiver assembly connector.


*a

Component with harness connected

(Radio and Display Receiver Assembly)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G50-23 (CGND) - Body ground

Always

Below 1 Ω

G50-24 (V-) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

G50-11 (CA+) - G50-23 (CGND)

Ignition switch ACC

5.5 to 7.05 V


NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY


OK

3.

INSPECT REAR TELEVISION CAMERA ASSEMBLY

(a) Reconnect the Y2 rear television camera assembly connector.

(b) Check the waveform of the rear television camera assembly using an oscilloscope.

HINT:

A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio and display receiver assembly with the connector connected.


*a

Component with harness connected

(Radio and Display Receiver Assembly)

*b

Waveform 1 (under normal conditions)

*c

Waveform 2 (camera lens is covered, blacking out the screen)

*d

Synchronized Signal

*e

Video Waveform

-

-

OK:

Waveform is as shown in the illustration.

Item

Content

Terminal No. (Symbol)

G50-12 (V+) - G50-24 (V-)

Tool Setting

200 mV/DIV., 50 μsec./DIV.

Condition

Ignition switch ON, shift lever in R

HINT:

The video waveform changes according to the image sent by the rear television camera assembly.


OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY


NG

REPLACE REAR TELEVISION CAMERA ASSEMBLY

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Rear View Monitor System DTC No. Detection Item Link C1622 Back Camera Disconnected ...

Image from Camera for Rear View Monitor is Abnormal
DESCRIPTION The display signal from the rear television camera assembly transmits to the radio and display receiver assembly. WIRING DIAGRAM PROCEDURE 1. CHECK HARNESS A ...

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