CAN COMMUNICATION SYSTEM > Clearance Warning ECU Communication Stop Mode

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DESCRIPTION


Detection Item
Symptom
Trouble Area
CLEARANCE WARNING ECU COMMUNICATION STOP MODE
  1. "CLEARANCE SONAR" is not displayed on the "Communication Bus Check" of the intelligent tester
  2. Applies to "CLEARANCE WARNING ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"
  1. Power source or inside the clearance warning ECU
  2. Clearance warning ECU sub bus line or connector

WIRING DIAGRAM


C112557E01


C112557E02


INSPECTION PROCEDURE

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

  1. Turn the engine switch off.

  1. Disconnect the clearance warning ECU (A40).



    C110544E15

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    A40-23 (R1) - A40-24 (R2)
    		Engine switch off
    		54 to 69 Ω



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


2.CHECK WIRE HARNESS (IG, E)


    C110544E16

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    A40-27 (E) - 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
    A40-8 (IG) - Body ground
    		Engine switch on (IG)
    		10 to 14 V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE CLEARANCE WARNING ECU