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• Use the low current shunt to measure circuits up • When testing for the presence of voltage or cur- • When measuring current, connect the meter in • Disconnect the live test lead before disconnecting 4.3 WARNINGS AND CAUTIONS 4.3.1 ROAD TEST WARNINGS Some complaints will require a test drive as part of the repair verification procedure. The purpose of CAUTION: Before road testing a vehicle, be T from the rear view mirror. Do not attempt to T while driving. Have an assistant available to operate the DRBIII T . 4.3.2 VEHICLE DAMAGE CAUTIONS Before disconnecting any control module, make sure the ignition is off. Failure to do so could Be careful when performing electrical tests so as to prevent accidental shorting of terminals. Such a 5.0 REQUIRED TOOLS AND DRBIII t (diagnostic read-out box) scan tool DRBIII t SuperCard 2 (CH8361) vacuum gauge 6.0 GLOSSARY OF TERMS A/C air conditioning APP accelerator pedal position (sensor) ASD auto shut down backfire, fuel ignites either in the intake or BP boost pressure (sensor) CKP crankshaft position (sensor) CMP camshaft position (sensor) cuts out, a steady pulsation or inability of the DLC data link connector detona- a mild to severe ping, especially un- ECM engine control module ECT engine coolant temperature (sensor) EGR exhaust gas recirculation hard the engine takes longer than usual IAT intake air temperature (sensor) lack of the engine power output has been MAF mass air flow (sensor) MIL malfunction indicator lamp ms millisecond(s) PDC power distribution center poor fuel there is significantly less fuel mile- runs the engine runs unevenly at idle S/C speed control SCI standard corporate interface SKIM sentry key immobilizer module SKIS sentry key immobilizer system start and the engine starts but immediately surge engine rpm fluctuation without cor- SRC signal range check VSS vehicle speed sensor 8 GENERAL INFORMATION |