DTC C1428: Motor Circuit Malfunction [12/2017 - 09/2018]: Procedure

1. Turn the engine switch off.
2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.
3. Disconnect the A9 skid control ECU (brake actuator assembly) connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A9-1 (GND2) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [12/2017 - 09/2018] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (GND2 CIRCUIT)