IDLE AIR CONTROL VALVE-FAST IDLE CONTROL DEVICE (IACV-FICD) SYSTEM TEST
- Start engine and warm to normal operating temperature. Check idle speed. See SERVICE & ADJUSTMENT SPECIFICATIONS article. Adjust, if necessary. Turn A/C and blower on. If idle speed increases by 50 RPM or more, system is okay. If idle speed does not increase by 50 RPM or more, go to next step.
- Check A/C compressor operation. Repair A/C system, if necessary. If A/C compressor operation is okay, check IACV-FICD power and ground circuits. See appropriate diagram in WIRING DIAGRAMS article. Repair as necessary. If circuits are okay, go to next step.
- Check ambient air temperature sensor (if equipped). See appropriate AUTOMATIC A/C-HEATER SYSTEMS article. Replace, if necessary. If ambient air temperature sensor is okay, go to next step.
- Check IACV-FICD solenoid. See «IACV-FICD SOLENOID»(ref-91146-S13176152752001030200000) . Replace, if necessary. If IACV-FICD solenoid is okay, no problem is indicated at this time. Problem may be intermittent. See TESTING PROCEDURE under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - INTRODUCTION article.
EVAP System Leak Test
| CAUTION | DO NOT apply more than.6 psi (.04 kg/cm 2 ) of pressure to EVAP system. DO NOT use compressed air. |
Note. DO NOT start engine.
Connect suitable pressure pump with gauge to EVAP service port. See VACUUM DIAGRAMS article for location. Using jumper wires, apply battery voltage to EVAP Canister Vent Control Valve (EVAP-CVCV) and vacuum cut valve by-pass valve. (Scheme 38)- (Scheme 43). Apply.2-.4 psi (.01-.03 kg/cm 2 ) of pressure to EVAP service port. Remove pressure pump from EVAP service port. Using Leak Detector (J41416), locate EVAP system leak.
