DTC C0126 Rear Inlet Solenoid Valve RH Malfunction In Abs Control Module And Hydraulic Control Unit (ABSCM & H/U): Wiring Diagram

Fig 1: ABSCM & H/U - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

REAR INLET SOLENOID VALVE DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK INPUT VOLTAGE OF ABSCM & H/U.  Turn the ignition switch to OFF. Disconnect the ABSCM & H/U connectors. Run the engine at idle. Measure the voltage between ABSCM & H/U connector and chassis ground. Connector & terminal  (B301) No. 18 (+) - Chassis ground (-):	Is the voltage 10 - 15 V?	Go to step 2.	Repair the ABSCM & H/U power circuit.
2 CHECK THE ABSCM & H/U GROUND CIRCUIT.  Turn the ignition switch to OFF. Measure the resistance between the ABSCM & H/U connector and chassis ground. Connector & terminal  (B301) No. 15 - Chassis ground:	Is the resistance less than 0.5 Ω?	Go to step 3.	Repair the ABSCM & H/U ground harness.
3 CHECK POOR CONTACT IN CONNECTOR.	Is there poor contact in connector between generator, battery and ABSCM & H/U?	Repair the connector.	Go to step 4.
4 CHECK ABSCM & H/U.  Connect all connectors. Clear the memory. Refer to CLEAR MEMORY MODE . Perform the Inspection Mode. Refer to INSPECTION MODE . Read the DTC.	Is the same DTC displayed?	Replace the ABSCM & H/U. Refer to ABS CONTROL MODULE AND HYDRAULIC CONTROL UNIT (ABSCM & H/U) .	Go to step 5.
5 CHECK FOR ANY OTHER DTC ON DISPLAY.	Is any other DTC displayed?	Check DTC using LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .	Temporary poor contact occurs.