Vehicle Check/Preparation

SPECIAL NOTES:
- The Key ON Engine OFF and Key ON Engine Running Self-Tests detect faults that are present at the time of testing. Faults that occur only when the vehicle is operating or intermittent faults that have occurred in the last 80 warm-up cycles are detected during Continuous Memory Self-Test, stored in Continuous Memory and displayed during Key ON Engine OFF Self-Test.
- When directed to a pinpoint test, always read the test notes and look carefully at the pinpoint test schematic.
- After service, rerun Quick Test to ensure that service was effective.
- It may be necessary to disconnect or disassemble harness connector assemblies to do some of the inspections. Pin locations should be noted before disassembly.

VISUAL CHECK
1. Inspect the air cleaner and inlet ducting.
2. Check all engine vacuum hoses for damage, leaks, cracks, blockage, proper routing, etc.
3. Check EEC system wiring harness for proper connections, bent or broken pins, corrosion, loose wires, proper routing, etc.
4. Check the Powertrain Control Module (PCM), sensors and actuators for physical damage.
5. Check the engine coolant for proper level and mixture.
6. Check the transmission fluid level and quality.
7. Make all necessary repairs before continuing with quick test.

VEHICLE PREPARATION
1. Perform all safety steps required to start and run vehicle tests: Apply parking brake, put shift lever firmly in PARK position (NEUTRAL on manual transmission), block drive wheels, etc.
2. Turn OFF all electrical loads: radios, lights, A/C, heater, blower, fans, etc.