Home ReviewsRefund
Home/Saab/9-3/Saab 9-3 I (1998-2003)/Repair manual/Testing & Diagnostics/DTC P1662-P1663: CHARGE AIR CONTROL (CAC) VALVE CIRCUIT
Contents Wiring diagrams Section: Testing & Diagnostics All sections

DTC P1662-P1663: CHARGE AIR CONTROL (CAC) VALVE CIRCUIT Saab 9-3 I

Testing & Diagnostics ~249 words
  1. Disconnect CAC valve harness connector. (Схема №1) Turn ignition on. Connect SST 86 11 857 test light (Схема №5) or equivalent between CAC valve harness connector terminal No. 1 (Yellow/Grey wire) and ground. (Схема №8) If test light illuminates, go to next step. If test light does not illuminate, check for blown fuse No. 17 in dashboard fuse block. (Схема №4) If fuse is okay, check for faulty circuit between fuse No. 17 and CAC valve harness connector terminal No. 1 (Yellow/Grey wire). See appropriate wiring diagram in «WIRING DIAGRAMS»(ref-3491) article. Repair as necessary and go to step 3.
  2. Connect test light between CAC valve harness connector terminals No. 1 (Yellow/Grey wire) and 2 (Blue wire). Turn ignition off. Connect TECH 2 scan tool to Data Link Connector (DLC). Turn ignition on. Select ACTIVATE: CHARGE AIR CONTROL VALVE (TRIONIC) 100 percent. If test light illuminates, replace CAC valve. If test light does not illuminate, check for faulty circuit between CAC valve harness connector terminal No. 2 and ECM harness connector terminal No. 13 (Blue wire). (Схема №7)for ECM terminal identification. Repair as necessary. Go to next step.
  3. Use scan tool to clear all system DTCs. Drive vehicle for 5 minutes under varying loads and engine RPM. Recheck for any stored DTCs. If either DTC P1662 or P1663 is present, substitute known good ECM and retest system. See «ENGINE CONTROL MODULE (ECM)»(ref-2997-S17585372472000041700000) under COMPUTERIZED ENGINE CONTROLS in REMOVAL, OVERHAUL & INSTALLATION article.

More articles — Engine Controls - Self-Diagnostics - Trionic T7 Fuel Control System