Inspection Procedure

NOTE: When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration (see INITIALIZATION ).

INSPECT CAN COMMUNICATION SYSTEM

Check if the CAN communication system DTC is output (see DIAGNOSIS SYSTEM ).

Result

RESULT

Condition	Proceed to
DTC is not output	A
DTC is output	B

B: REPAIR CAN COMMUNICATION SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )

A: GO TO Next Step

INSPECT MULTIPLEX COMMUNICATION SYSTEM

Check if the multiplex communication system DTC is output (see DIAGNOSIS SYSTEM ).

Result

RESULT

Condition	Proceed to
DTC is not output	A
DTC is output	B

B: REPAIR MULTIPLEX COMMUNICATION SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )

A: GO TO Next Step

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (BRAKE CONTROL WARNING LIGHT)

Connect the intelligent tester to the DLC3.
Turn the power switch ON (IG).

Select the "Electronically Controlled Brake System Warning Lamp" and "VSC Warning Lamp" in the ACTIVE TEST and operate the brake control (electronically controlled brake system/VSC) warning light by the intelligent tester.

Skid control ECU:

DATA LIST

Item (Display)	Vehicle Condition/ Test Details	Diagnostic Note
Electronically Controlled Brake System WARN LAMP	Turns brake control warning light ON/OFF	Observe combination meter
VSC WARN LAMP	Turns brake control warning light ON/OFF	Observe combination meter

Check that "ON" and "OFF" of the brake control (electronically controlled brake system/VSC) warning lights are indicated on the combination meter when using the intelligent tester.
OK:

The brake control (electronically controlled brake system/VSC) warning lights turn on or off in accordance with the intelligent tester.

HINT:

If troubleshooting has been carried out according to the "PROBLEM SYMPTOMS TABLE ", refer back to the table and proceed to the next step before replacing the part.

OK: REPLACE SKID CONTROL ECU (See REMOVAL )

NG: GO TO Next Step

INSPECT COMBINATION METER ASSEMBLY
1. Check the combination meter (see INITIALIZATION ).
  HINT:
  
  If troubleshooting has been carried out according to the "PROBLEM SYMPTOMS TABLE ", refer back to the table and proceed to the next step before replacing the part.
NG: REPLACE COMBINATION METER ASSEMBLY (See REMOVAL )

OK: END