CAN COMMUNICATION SYSTEM (for LHD) > Gateway ECU Communication Stop Mode

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DESCRIPTION


Detection Item
Symptom
Suspected Area
GATEWAY ECU COMMUNICATION STOP MODE
  1. "Body/Gateway" is not displayed on the "Communication Bus Check" screen of the intelligent tester
  2. Applies to "GATEWAY ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"
  1. Power source circuit of the gateway ECU
  2. Gateway ECU sub bus line or connector
  3. Gateway ECU

WIRING DIAGRAM


C113745E06


INSPECTION PROCEDURE

1.CHECK CAN BUS LINE FOR DISCONNECTION (GATEWAY ECU SUB BUS LINE)

  1. Turn the ignition switch off.



    G031979E09

  1. Disconnect the gateway ECU connector (G1).

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Value
    G1-17 (CA1H) - G1-18 (CA1L)
    		Disconnect the negative auxiliary battery cable
    		54 to 69 Ω



NG
REPAIR OR REPLACE GATEWAY ECU SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)
OK


2.CHECK WIRE HARNESS (ACC, IG, GND)


    G031082E07

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Value
    G1-24 (GND) - 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
    G1-2 (ACC) - Body ground
    		Ignition switch ACC
    		10 to 14 V
    G1-1 (IG) - Body ground
    		Ignition switch on
    		10 to 14 V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE GATEWAY ECU