2Ad-Fhv Can Communication System (For Rhd) Skid Control Ecu Communication Stop Mode

Communication System. Lexus Is250, Is220D. Gse20 Ale20
Can Communication. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CONFIRM MODEL

CHECK CAN BUS LINE FOR OPEN (SKID CONTROL ECU BRANCH LINE)

CHECK WIRE HARNESS (IG1, GND1)

CHECK CAN BUS LINE FOR OPEN (SKID CONTROL ECU BRANCH LINE)

CHECK WIRE HARNESS (IG1, GND1)

2AD-FHV CAN COMMUNICATION SYSTEM (for RHD) - Skid Control ECU Communication Stop Mode


DESCRIPTION


Detection Item
Symptom
Trouble Area
Skid Control ECU Communication Stop Mode
  1. "ABS/VSC/TRAC" is not displayed on the "BUS CHECK" screen of the intelligent tester
  2. Applies to "Skid Control ECU Communication Stop Mode" in the "DTC COMBINATION TABLE"
  1. Power source circuit of the skid control ECU
  2. Skid control ECU branch line or connector
  3. Skid control ECU
HINT:
"ABS/VSC/TRAC" refers to the circuit that includes the skid control ECU.

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Can Communication.Can Communication System (For Lhd).2Ad-Fhv Can Communication System (For Rhd) Skid Control Ecu Communication Stop Mode


Lexus Is250, Is220D. Gse20 Ale20.Can Communication.Can Communication System (For Lhd).2Ad-Fhv Can Communication System (For Rhd) Skid Control Ecu Communication Stop Mode


INSPECTION PROCEDURE

1.CONFIRM MODEL

Result:

Result
Proceed to
with VDIM System
A
without VDIM System
B


B
Go to step 4
A


2.CHECK CAN BUS LINE FOR OPEN (SKID CONTROL ECU BRANCH LINE)


    Lexus Is250, Is220D. Gse20 Ale20.Can Communication.Can Communication System (For Lhd).2Ad-Fhv Can Communication System (For Rhd) Skid Control Ecu Communication Stop Mode

  1. Turn the engine switch off.

  1. Disconnect the skid control ECU connector (J77).

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    J77-8 (CANH) - J77-16 (CANL)
    		Engine switch off
    		54 to 69 Ω


NG
REPAIR OR REPLACE SKID CONTROL ECU BRANCH LINE OR CONNECTOR (CAN-H, CAN-L)
OK


3.CHECK WIRE HARNESS (IG1, GND1)


    Lexus Is250, Is220D. Gse20 Ale20.Can Communication.Can Communication System (For Lhd).2Ad-Fhv Can Communication System (For Rhd) Skid Control Ecu Communication Stop Mode

  1. Disconnect the skid control ECU connectors (J78) and (J77).

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    J78-26 (GND1) - Body ground
    		Always
    		Below 1 Ω

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Value
    J77-1 (IG1) - Body ground
    		Engine switch on (IG)
    		10 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE SKID CONTROL ECU

4.CHECK CAN BUS LINE FOR OPEN (SKID CONTROL ECU BRANCH LINE)


    Lexus Is250, Is220D. Gse20 Ale20.Can Communication.Can Communication System (For Lhd).2Ad-Fhv Can Communication System (For Rhd) Skid Control Ecu Communication Stop Mode

  1. Turn the engine switch off.

  1. Disconnect the skid control ECU connector (A14).

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    A14-11 (CANH) - A14-25 (CANL)
    		Engine switch off
    		54 to 69 Ω


NG
REPAIR OR REPLACE SKID CONTROL ECU BRANCH LINE OR CONNECTOR (CAN-H, CAN-L)
OK


5.CHECK WIRE HARNESS (IG1, GND1)


    Lexus Is250, Is220D. Gse20 Ale20.Can Communication.Can Communication System (For Lhd).2Ad-Fhv Can Communication System (For Rhd) Skid Control Ecu Communication Stop Mode

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    A14-32 (GND1) - Body ground
    		Always
    		Below 1 Ω

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Value
    A14-46 (IG1) - Body ground
    		Engine switch on (IG)
    		10 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR)