2Ad-Fhv Can Communication System (For Rhd) Ecm Communication Stop Mode

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK WIRE HARNESS (+B, EOM)

2AD-FHV CAN COMMUNICATION SYSTEM (for RHD) - ECM Communication Stop Mode


DESCRIPTION


Detection Item
Symptom
Trouble Area
ECM Communication Stop Mode
  1. "Engine" and "ECT" are not displayed on the "Communication Bus Check" screen of the intelligent tester
  2. Applies to "ECM Communication Stop Mode" in the "DTC COMBINATION TABLE"
  1. Power source circuit of the ECM
  2. ECM
HINT:
"Engine" and "ECT" refer to the circuit that includes the ECM.

WIRING DIAGRAM


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


INSPECTION PROCEDURE

1.CHECK WIRE HARNESS (+B, EOM)


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

  1. Turn the engine switch off.

  1. Disconnect the ECM connector (A49).

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    A49-37 (EOM) - 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
    A49-1 (+B) - Body ground
    		Engine switch off
    		10 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM