Toyota aqua ABS error C1311

[aliswalehi]

I have toyota aqua 2013 and facing the ABS problem all four lights are on and error code is C1311 which states open in ABS main relay 1open i tried to locate ABS main relay1 but couldn't find out where it islocated if anyone can help

[nomi01]

First check the two abs fuses(ABS No1, ABS No2 ) located in fusebox engine bay. Next disconnect the abs actuator/brake booster connector and check the wiring harness connector pin 14 and pin 15 for 12volts. If yes, you may need to replace the abs actuator assembly bcz ABS main relay is located inside the assembly(as far as i can recall).
Also check the detailed INF/subcode. You may also use active test and see if ABS main relay status changes(on/off) on relevant input command. Could be of more help if you are in rwp/isl area