Inspection Procedure

B: REPAIR CIRCUIT INDICATED BY OUTPUT DTC (See  DIAGNOSTIC TROUBLE CODE CHART   ) 

A: Go to next step 

NG: CONNECT CONNECTOR TO ECU 

OK: Go to next step 

WHEN USING HAND-HELD TESTER: 

1. Connect the hand-held tester to the DLC3.
2. Start the engine.
3. Select DATA LIST mode on the hand-held tester.
   SKID CONTROL ECU TERMINAL VOLTAGE (IG1 TERMINAL) (USING HAND-HELD TESTER)
   
   

   Item	Measurement Item / Range (Display)	Normal Condition
   IG VOLTAGE	ECU power supply voltage / UNDER / NORMAL / OVER	TOO HIGH: NORMAL: 9.5 V or over TOO LOW: Below 9.5 V

4. Read the voltage condition output from the ECU displayed on the hand-held tester.

OK: 

"Normal" is displayed. 

WHEN NOT USING HAND-HELD TESTER: 

1. Disconnect the skid control ECU connector.
2. Turn the ignition switch to the ON position.
3. Measure the voltage according to the value(s) in SKID CONTROL ECU TERMINAL VOLTAGE (IG1 TERMINAL) (NOT USING HAND-HELD TESTER)  .

Standard: 

Fig 1: View Of Skid Control ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to step   5 

NG: Go to next step 

1. Disconnect the skid control ECU connector S1.
2. Measure the resistance according to the value(s) in SKID CONTROL ECU - BODY GROUND  .

Standard: 

Fig 2: View Of Skid Control ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

1. Check the harness and connector between the skid control ECU and combination meter.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check the combination meter assy (See COMBINATION METER ).

NG: REPAIR OR REPLACE COMBINATION METER ASSY (See step 11 in  REPLACEMENT  ) 

OK: REPLACE BRAKE ACTUATOR ASSY (See step 3 in  REPLACEMENT  )