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Home >> Saturn >> 2002 >> SC2 Automatic, MP6 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0413: Air Switching Valve Circuit Open >> Diagnostic Procedures

Diagnostic Procedures

  1. Turn ignition on, with engine off. Using scan tool, monitor AIR PUMP SOL. - LOW VOLT or AIR PUMP SOL. - OPEN test. If scan tool does not indicate TEST FAIL, see DIAGNOSTIC AIDS  . If scan tool indicates TEST FAIL, go to next step.
  2. Check EMISS fuse (10-amp). If fuse is blown, replace fuse. If fuse is okay, disconnect air pump solenoid harness connector. Air pump solenoid is located on air pump combination valve on right front corner of motor. Connect Noid Light (SA9194E) to air pump solenoid harness connector. Using scan tool, monitor AIR PUMP SOL. - LOW VOLT or AIR PUMP SOL. - OPEN test. If scan tool indicates TEST PASS, check for loose connections. Repair as necessary. If terminals are okay, replace air pump solenoid. If scan tool does not indicate TEST PASS, go to next step.
  3. Verify if noid light is on. If noid light is not on, go to next step. If noid light is on, check air pump solenoid circuit (Pink/Black wire) for short to ground. Repair as necessary. If circuit is okay, replace PCM.
  4. Connect test light between ground and air pump solenoid harness connector terminal No. 2 (Pink wire). If test light illuminates, check for open in Pink/Black wire or loose connections. Repair as necessary. If circuit or terminal is okay, replace PCM. If test light does not illuminate, repair open in Pink/Black wire.
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