Inspection Procedure

1. Check that each ECU connector is properly installed.

   OK: Each ECU connector is properly installed. 

NG: CONNECT CONNECTOR TO ECU CORRECTLY 

OK: Go to Next step 

1. Turn the ignition switch ON.
2. Check that the VSC TRAC warning light illuminates.
3. Check if the same DTCs are recorded.

   Result: 

   RESULT
   
   

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

B: REPAIR CIRCUIT INDICATED BY OUTPUT DTC 

A: Go to Next step 

NG: END 

OK: Go to Next step 

Result: 

B: Go to step  6

C: RECHARGE OR REPLACE BATTERY 

A: Go to Next step 

1. Select the ACTIVE TEST, generate a control command, and then check that the VSC TRAC warning light operates.

   Skid control ECU assembly 

   DATA LIST
   
   

   Item	Vehicle Condition / Test Details	Diagnostic Note
   VSC WARN LIGHT	Turn VSC warning light ON / OFF	Observe combination meter

   OK: VSC TRAC warning light on or off. 

OK: REPLACE SKID CONTROL ECU ASSEMBLY 

NG: Go to Next step 

1. Disconnect the A40 ECU connector.
2. Turn the ignition switch ON.
3. Using a service wire, connect terminal WA to GND3 or GND4 of the A40 ECU connector. Check the VSC TRAC warning light.

   OK: VSC TRAC warning light turns off. 

4. Turn the ignition switch OFF.
5. Remove the service wire.
6. Turn the ignition switch ON. Check the VSC TRAC warning light.

   OK: VSC TRAC warning light illuminates. 

OK: REPLACE SKID CONTROL ECU ASSEMBLY 

NG: Go to Next step 

OK: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: REPLACE COMBINATION METER