Visual Check & Vehicle Preparation

Correct test results for the Quick Test are dependent on the proper operation of related non-IVSC components systems. It may be necessary to correct faults in these areas before the IVSC will pass the Quick Test.
Before hooking up any equipment to diagnose the IVSC system, make the following checks:
1. Check all engine vacuum hoses for leaks or pinched hoses (servo to dump valve and servo to manifold vacuum).
2. Check IVSC and EEC system wiring harness electrical connections for proper connections, faulty connectors, corrosion and proper routing of harness. It may be necessary to disconnect or disassemble the connector assembly to perform some of the inspections.
3. Check EEC-IV and IVSC sensors and actuators for physical damage.
4. Perform all safety steps required to start and run operation vehicle tests.
5. Apply emergency brake. Place the shift lever in PARK (NEUTRAL for manual transmission).
6. Turn off all electrical loads.
7. Verify engine coolant is at specified level.
8. Start engine and idle until upper radiator hose is hot and pressurized and throttle is off fast idle.
9. Turn ignition key off.
10. Service items as required, then proceed to equipment hookup.