Inspection Procedure

1. Disconnect the skid control ECU connector.
Fig 1: Identifying Skid Control ECU Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the ignition switch to ON.
3. Ground terminal INFR of the skid control ECU.
4. Check the AUTO LSD indicator light.

   OK 

   AUTO LSD INDICATOR LIGHT OPERATION CHART
   
   

   INFR - GND Condition	Illumination Condition
   Connecting	ON
   Disconnecting	OFF

NG: Go to step 2 

OK: REPLACE MASTER CYLINDER SOLENOID  (See DISASSEMBLY )

1. Disconnect the skid control ECU connector.
Fig 2: Identifying Skid Control ECU Connector And Combination Meter Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the combination meter connector.
3. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   A4-15 (INFR) - E14-10 (ALSD)	Below 1 Ω
   A4-15 (INFR) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check the combination meter system (See TERMINALS OF ECU ).

   OK: 

   Combination meter is normal. 

NG: REPLACE COMBINATION METER ASSEMBLY  (See REMOVAL )

OK: CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS  )