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

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DESCRIPTION


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

WIRING DIAGRAM


C113209E05


INSPECTION PROCEDURE

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

  1. Turn the ignition switch off.



    G032615E04

  1. Disconnect the power steering ECU connector (P43).

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Value
    P43-2 (CANH) - P43-3 (CANL)
    		Disconnect the negative auxiliary battery cable
    		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)


    G032615E03

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Value
    P43-5 (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
    P43-9 (IG) - Body ground
    		Ignition switch on
    		10 to 14 V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE POWER STEERING ECU