Inspection Procedure

NOTE: When replacing the skid control ECU, perform the following operations:

Initialization of linear solenoid valve and calibration (see INITIALIZATION )
Yaw rate and acceleration sensor zero point calibration (see CALIBRATION )

INSPECT CAN COMMUNICATION SYSTEM

Check if the CAN communication system DTC is output (See DIAGNOSTIC TROUBLE CODE CHART ).

Result

RESULT REFERENCE

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

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

A: Go to next step

PERFORM ACTIVE TEST USING INTELLIGENT TESTER OR TECHSTREAM (BRAKE CONTROL WARNING LIGHT)

Connect the Intelligent tester or Techstream to the DLC3.
Turn the power switch ON (IG).

Select the ABS/VSC/TRAC "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 or Techstream.

Intelligent tester

ABS/VSC:

ABS/VSC REFERENCE

Tester Display	Test Part	Control Range	Diagnostic Note
Electronically Controlled Brake System WARN LAMP	Turns brake warning light / yellow (minor malfunction)	ON / OFF	Observe combination meter
VSC WARN LAMP	Turns master warning light and multi-information display	ON / OFF	Observe combination meter

Techstream

ABS/VSC/TRAC:

ABS/VSC/TRAC REFERENCE

Tester Display	Test Part	Control Range	Diagnostic Note
Electronically Controlled Brake System Warning Lamp	Turns brake control warning light/ yellow (minor malfunction)	ON / OFF	Observe combination meter
VSC Warning Lamp	Turns master warning light and multi-information display	ON/OFF	Observe combination meter

Check that "ON" and "OFF" of the brake (electronically controlled brake system/VSC) warning lights / yellow (minor malfunction) are indicated on the combination meter when using the Intelligent tester or Techstream.

OK: The brake (electronically controlled brake system/ VSC) warning light / yellow (minor malfunction) turn on or off in accordance with the Intelligent tester or Techstream.

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 (see PROBLEM SYMPTOMS TABLE ).

Result

RESULT REFERENCE

Result	Proceed to
NG	A
OK	B

B: REPLACE SKID CONTROL ECU (See REMOVAL )

A: Go to next step

INSPECT NO. 1 METER ECU
1. Perform the meter and gauge system active test (see DATA LIST / ACTIVE TEST ).
  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 (see PROBLEM SYMPTOMS TABLE ).
NG: REPLACE NO. 1 METER ECU (See DISASSEMBLY )

OK: USE SIMULATION METHOD TO CHECK (See HOW TO PROCEED WITH TROUBLESHOOTING )