Switch Performance Check

To properly diagnose solenoid, it must be checked in the ON and OFF positions. When test procedure requires click test, check appropriate solenoid as follows.

• BOOST  Install breakout box, leaving ECA disconnected. Turn ignition
  1. Apply pressure to vacuum nipple of turbocharger boost control solenoid. Using jumper wire, ground the BOOST test pin of breakout box to release vacuum.
• CANP  Install breakout box, leaving ECA disconnected. Turn ignition
  1. Apply vacuum to vacuum nipple of canister purge solenoid. Using jumper wire, ground CANP test pin of breakout box to release vacuum.
• EGRC/EGRV  Install breakout box, leaving ECA disconnected. Turn ignition
  1. Apply vacuum to EGR valve. Vacuum should not hold. Using jumper wire, ground appropriate test pin of breakout box. See CIRCUIT PIN IDENTIFICATION (SCG)  . Apply vacuum to EGR valve. Vacuum should hold.
• HSIA  Install breakout box, leaving ECA disconnected. Turn ignition
  1. Apply vacuum to HSIA solenoid. Vacuum should hold. Using jumper wire, ground No. 53 test pin of breakout box. Vacuum should release.
• PRC  Install breakout box, leaving ECA disconnected. Turn ignition
  1. Apply vacuum to PRC solenoid. Vacuum should hold. Using jumper wire, ground appropriate test pin of breakout box. See CIRCUIT PIN IDENTIFICATION (SCG)  . Vacuum should release.
• ISC  Install breakout box, leaving ECA disconnected. Turn ignition
  1. Using jumper wire, ground No. 41 test pin of breakout box. ISC solenoid should click when test pin is grounded.