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Home >> Subaru >> 2013 >> Legacy Premium, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Engine Controls (Diagnostics) (H4DOTC)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0507 Idle Air Control System Rpm Higher Than Expected >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK FOR ANY OTHER DTC ON DISPLAY.  Is any other DTC displayed? Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Go to step 2. 
2 CHECK AIR INTAKE SYSTEM. 
  1. Start and idle the engine.
  2. Check the following items.
    • Loose installation of intake manifold and throttle body
    • Cracks of intake manifold gasket and throttle body gasket
    • Disconnection of vacuum hoses
 Is there any fault in air intake system? Repair air suction and leaks. Go to step 3. 
3 CHECK ELECTRONIC THROTTLE CONTROL. 
  1. Turn the ignition switch to OFF.
  2. Remove the electronic throttle control.
  3. Check the electronic throttle control.
 Are foreign matter found inside electronic throttle control? Remove foreign matter from electronic throttle control. Perform the diagnosis of DTC P2101. < Refer to DTC P2101 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT RANGE/PERFORMANCE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
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