Toyota CH-R Service Manual: Front Camera Module Communication Stop Mode

Toyota CH-R Service Manual / Networking / Can Communication System / Front Camera Module Communication Stop Mode

DESCRIPTION

Detection Item

Symptom

Trouble Area

Front Camera Module Communication Stop Mode

Any of the following conditions are met:

  • Communication stop for "Front Camera Module" is indicated on the "Communication Bus Check" screen of the Techstream.

    Click here

  • Communication stop history for "Front Camera Module" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Front Camera Module" is 6 or more.)

    Click here

  • Communication system DTCs (DTCs that start with U) that correspond to "Front Camera Module Communication Stop Mode" in "DTC Combination Table" are output.

    Click here

  • Forward recognition camera branch line or connector
  • Power source circuit of forward recognition camera
  • Forward recognition camera ground circuit
  • Forward recognition camera

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

    Click here

  • Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

  • After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

    DTC check procedure: Turn the LDA main switch on and then drive the vehicle at a speed of 1 km/h (1 mph) or more for approximately 52 seconds or more.

  • After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

  • Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.
  • When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.

PROCEDURE

1.

CHECK FOR OPEN IN CAN BUS LINES (FORWARD RECOGNITION CAMERA BRANCH LINE)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the forward recognition camera connector.

*a

Front view of wire harness connector

(to Forward Recognition Camera)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R5-5 (CA1P) - R5-11 (CA1N)

Cable disconnected from negative (-) battery terminal

54 to 69 Ω
NG

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (FORWARD RECOGNITION CAMERA)
OK

2.

CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R5-10 (GND) - Body ground

Cable disconnected from negative (-) battery terminal

Below 1 Ω

*a

Front view of wire harness connector

(to Forward Recognition Camera)

(b) Reconnect the cable to the negative (-) battery terminal.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

R5-7 (IGB) - Body ground

Ignition switch ON

11 to 14 V
OK

REPLACE FORWARD RECOGNITION CAMERA

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
    Check Bus 5 Line for Short to GND
    DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 15 (CA5H) of the central gateway ECU (network gateway ECU) and termi ...

    Open in One Side of Bus 5 Branch Line
    DESCRIPTION When the CAN bus main lines are normal (no open, short to ground, short to +B or short between lines) and there is an ECU or sensor on the "Communication Bus Check" screen t ...

    Other materials:

    Toyota CH-R Service Manual > Front Seat Side Airbag Assembly: On-vehicle Inspection
    ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT CAUTION: Be sure to correctly follow the removal and installation procedures for the front seat airbag assemblies. PROCEDURE 1. INSPECT FRONT SEAT AIRBAG ASSEMBLY (for Vehicle not Involved in Collision) (a) Perform a diagnostic system check. Cli ...

    Toyota CH-R Service Manual > Vacuum Warning Switch: On-vehicle Inspection
    ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT BRAKE FLUID LEVEL IN RESERVOIR Click here 2. INSPECT BRAKE BOOSTER ASSEMBLY Click here 3. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY Click here 4. INSPECT VACUUM WARNING SWITCH ASSEMBLY (a) Start the engine and stop it after 1 or 2 minute ...

    Toyota C-HR (AX20) 2023-2025 Owner's Manual

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2025 Copyright www.tochr.net
    0.0105