CAN COMMUNICATION SYSTEM > Power Steering ECU Communication Stop Mode

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DESCRIPTION


Detection Item
Symptom
Trouble Area
POWER STEERING ECU COMMUNICATION STOP MODE
  1. "Power steering" is not displayed on the "Communication Bus Check" of the intelligent tester
  2. Applies to "POWER STEERING ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"
  1. Power source or inside the power steering ECU
  2. Power steering ECU sub bus line or connector

WIRING DIAGRAM


C112558E04


C112558E03


INSPECTION PROCEDURE

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

  1. Turn the engine switch off.

  1. Disconnect the power steering ECU (A24).



    C107162E03

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    A24-2 (CANH) - A24-3 (CANL)
    		Engine switch off
    		54 to 69 Ω



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


2.CHECK WIRE HARNESS (IG, PGND)


    C107162E04

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    A24-5 (PGND) - 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
    A24-9 (IG) - Body ground
    		Engine switch on (IG)
    		10 to 14 V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE POWER STEERING ECU