Can Communication System (For Lhd) Navigation Ecu Communication Stop Mode

Communication System. Camry. Acv40 Gsv40
Can Communication. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK OPEN IN CAN BUS WIRE (NAVIGATION ECU BRANCH LINE)

CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)

CAN COMMUNICATION SYSTEM (for LHD) - Navigation ECU Communication Stop Mode


DESCRIPTION


Detection Item
Symptom
Trouble Area
Navigation ECU Communication Stop Mode
  1. "AVN1" is not displayed on the "Communication Bus Check" screen of the intelligent tester
  2. Applies to "Navigation ECU Communication Stop Mode" in the "DTC Combination Table"
  1. Display and navigation ECU branch line or connector
  2. Power source circuit of navigation ECU
  3. Navigation ECU (Navigation receiver assembly)

WIRING DIAGRAM


Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Lhd) Navigation Ecu Communication Stop Mode


INSPECTION PROCEDURE

NOTICE:
  1. Turn the ignition switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires.
  2. Turn the ignition switch off before inspecting CAN bus wires for a ground short.
  3. After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not operating.
  4. Before measuring the resistance, leave the vehicle as is for at least 1minute and do not operate the ignition switch, any other switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.
HINT:
  1. Operating the ignition switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
  2. Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.
1.CHECK OPEN IN CAN BUS WIRE (NAVIGATION ECU BRANCH LINE)

  1. Turn the ignition switch off.



    Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Lhd) Navigation Ecu Communication Stop Mode

  1. Disconnect the navigation receiver assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    F26-2 (CANH) - F26-3 (CANL)
    		Ignition switch off
    		54 to 69 Ω


NG
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (NAVIGATION ECU BRANCH WIRE)
OK


2.CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)


    Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Lhd) Navigation Ecu Communication Stop Mode

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    F27-7 (GND) - Body ground
    		Always
    		Below 1 Ω


    Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Lhd) Navigation Ecu Communication Stop Mode

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    F27-3 (ACC) - Body ground
    		Ignition switch ACC
    		11 to 14 V
    F25-2 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
OK

REPLACE NAVIGATION RECEIVER ASSEMBLY (NAVIGATION ECU) (CAMRY_ACV40 RM0000026K1014X.html)