Skid Control ECU Communication Stop Mode

DESCRIPTION

Detection Item	Symptom	Suspected Area
SKID CONTROL ECU COMMUNICATION STOP MODE	ABS/VSC/TRC is not displayed on the "Communication Bus Check" screen of the intelligent tester Applies to "SKID CONTROL ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"	Power source circuit of the skid control ECU Skid control ECU sub bus line or connector Skid control ECU

WIRING DIAGRAM

INSPECTION PROCEDURE

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

1. Turn the ignition switch off.

2. Disconnect the skid control ECU connector (S40).

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

   Standard Resistance:

   Tester Connection	Condition	Specified Value
   S40-19 (CANH) - S40-18 (CANL)	Disconnect the negative auxiliary battery cable	54 to 69 Ω

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

OK

2. CHECK WIRE HARNESS (IG1, IG2, GND1, GND2, GND3, GND4, GND5, GND6)

1. Disconnect the skid control ECU connectors (S38), (S39), and (S41).

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

   Standard Resistance:

   Tester Connection	Condition	Specified Value
   S41-1 (GND1) - Body ground	Always	Below 1 Ω
   S40-2 (GND2) - Body ground	Always	Below 1 Ω
   S40-1 (GND3) - Body ground	Always	Below 1 Ω
   S39-2 (GND4) - Body ground	Always	Below 1 Ω
   S39-1 (GND5) - Body ground	Always	Below 1 Ω
   S38-4 (GND6) - Body ground	Always	Below 1 Ω

   HINT:

   Measure the resistance with the skid control ECU connector (S40) disconnected.

3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage:

   Tester Connection	Condition	Specified Value
   S40-7 (IG1) - Body ground	Ignition switch on	10 to 14 V
   S38-5 (IG2) - Body ground	Ignition switch on	10 to 14 V

   HINT:

   Measure the voltage with the skid control ECU connector (S40) disconnected.

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE SKID CONTROL ECU