Inspection Procedure

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

   Result 

   RESULT CHART
   
   

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

B: INSPECT CAN COMMUNICATION SYSTEM 

A: Go to Next Step 

1. Check if the skid control ECU connector is securely connected.

   OK: 

   The connector should be securely connected. 

NG: CONNECT CONNECTOR TO ECU CORRECTLY 

OK: Go to Next Step 

1. Check the battery voltage.

   Standard voltage: 

   11 to 14 V 

NG: CHECK AND REPLACE CHARGING SYSTEM OR BATTERY 

OK: Go to Next Step 

1. Disconnect the skid control ECU connector.
2. Turn the engine switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   A36-46 (IG1) - Body ground	Engine switch on (IG)	10 to 14 V

Fig 1: Identifying IG1 Terminal Of Skid Control ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT) 

OK: Go to Next Step 

1. Turn the engine switch off.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   A36-32 (GND1) - Body ground	Always	Below 1 Ω
   A36-1 (GND2) - Body ground	Always	Below 1 Ω

Fig 2: Identifying GND Terminal Of Skid Control ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) 

OK: Go to Next Step 

1. Reconnect the skid control ECU connector.
2. Perform Active Test of the combination meter (meter CPU) using the intelligent tester (See DATA LIST / ACTIVE TEST ).

   OK: 

   The ABS warning light turns 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 (See PROBLEM SYMPTOMS TABLE  ).

NG: REPLACE COMBINATION METER ASSEMBLY 

OK: REPLACE BRAKE ACTUATOR ASSEMBLY