Testing Notes

NOTE: You should enter this Pinpoint Test only when you have been directed here form Quick Test.


REMEMBER

To prevent the replacement of good components, be aware that the following non-EEC areas may be at fault.

^ Coolant level

^ Cooling system

^ Electro drive cooling fan

^ Water pump drive belt

^ Engine operating temperature

^ Engine oil level

^ Thermostat

^ Air cleaner duct

^ Ambient temperature

This Pinpoint Test is intended to diagnose only the following:

^ ACT sensor

^ ECT sensor

^ Harness circuit: ACT, ECT, and SIG RTN

^ Processor assembly