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Home >> Subaru >> 2006 >> Legacy GT spec.B >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Brakes - Abs (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC C0114 Valve Relay Malfunction

DTC C0114 Valve Relay Malfunction

DTC DETECTING CONDITION: 

Defective valve relay

TROUBLE SYMPTOM: 

NOTE: Brake warning light comes on as well as ABS warning light when EBD does not operate.

WIRING DIAGRAM: 

Fig 1: Valve Relay Malfunction - Wiring Diagram
G05020250
DIAGNOSIS PROCEDURE

Step Check Yes No
1 CHECK INPUT VOLTAGE OF ABSCM&H/U. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the ABSCM&H/U connectors.
  3. Run the engine at idle.
  4. Measure the voltage between ABSCM&H/U connector and chassis ground.

    Connector & terminal 

    (B301) No. 18 (+) - Chassis ground (-): 

    (B301) No. 14 (+) - Chassis ground (-): 

Is the voltage 10 - 15 V? Go to step 2.  Repair the harness connector between battery and ABSCM&H/U.
2 CHECK THE ABSCM&H/U GROUND CIRCUIT. 
  1. Turn the ignition switch to OFF.
  2. 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 VALVE RELAY IN ABSCM&H/U. 
Measure the resistance between the ABSCM&H/U terminals.
Terminals No. 14 - No. 15: 
Is the resistance more than 1 MΩ? Go to step 4.  Replace the ABSCM only. < Ref. to REPLACEMENT , ABS Control Module and Hydraulic Control Unit (ABSCM&H/U). >
4 CHECK POOR CONTACT IN CONNECTOR.  Is there poor contact in connector between generator, battery and ABSCM&H/U? Repair the connector. Go to step 5. 
5 CHECK ABSCM&H/U. 
  1. Connect all connectors.
  2. Erase the memory.
  3. Perform the Inspection Mode.
  4. Read the DTC.
Is the same DTC displayed? Replace the ABSCM only. < Ref. to REPLACEMENT , ABS Control Module and Hydraulic Control Unit (ABSCM&H/U). > Go to step 6. 
6 CHECK ANY OTHER DTC ON DISPLAY.  Is there any other DTC displayed? Check DTC using "List of Diagnostic Trouble Code (DTC)". < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Temporary poor contact occurs.