Powertrain Management: Tools and Equipment

TOOLS NEEDED TO SERVICE THE SYSTEM
The system requires Tachometer, Test Light, Digital Multimeter with 10 megohms impedance, Vacuum Gauge and Jumper Wires for diagnosis. A Test Light or Digital Multimeter must be used when specified in the procedures. They must NOT be interchanged. For more complete information on the operation of these tools, see the manufacturer's instructions.




Measuring Voltage
Voltage position measures amount of voltage when connected in parallel to an existing Circuit. A Digital Voltmeter with 10 megohm input impedance is used because this type of Meter will not load down the Circuit and result in faulty readings. Some Circuits require accurate low voltage readings, and some Circuits in the Engine Control Module (ECM) have a very high resistance.

Digital Multimeter: J-39200 or equivalent.

Measuring Amps
When used as Ammeter, this Meter also accurately measures extremely low current flow. Refer to Meter instructions for more information. Selector must be set properly for both function and range. DC is used for most automotive measurements.

Digital Multimeter: J-39200 or equivalent.

Measuring Resistance
Measures resistance of Circuit directly in ohms. Refer to Meter instructions for more information.

- OL Display in all ranges indicates open circuit.
- Zero display in all ranges indicates a short circuit.
- Intermittent connection in Circuit may be indicated by digital reading that will not stabilize on Circuit.
- Range Switch.
200 - Reads ohms directly.
2K, 20K, 200K - Reads ohms in thousands.
2M and 20M - Reads ohms in millions.

Digital Multimeter: J-39200 or equivalent.




Vacuum Pump (20 in. Hg. minimum)
Use Gauge to monitor Manifold Engine Vacuum and the Hand Pump to check Vacuum Sensors, Solenoids and Valves.

Vacuum pump gauge: J-23738




Port Fuel Injection Diagnostic Kit
Used to diagnose port Fuel Injection Systems. The kit includes:
- Fuel Pressure Gauge - to check Fuel Pump pressure and compare Injector pressure drop for equal Fuel distribution.
- Fuel Rail Access Filling - To easily access Fuel Line, use this adapter together with the Fuel Pressure Gauge.

Fuel Pressure Gauge : J-35957-1, Fuel Rail Access Filling : J-35957-2.

Fuel Pressure Gauge
Used to check and monitor Fuel Line pressure of Port Fuel System.

Note: Read all instructions thoroughly before proceeding. Observe all cautions.




Tech 1 Scan Tool
Used to access DTCs and data.

Tech 1 Scan Tool: 94-00101A.




Tachometer
Use inductive trigger signal pickup type to check RPM.






Spark Tester
Use to check available secondary ignition voltage. Also called an ST125.

Spark Tester: J-26792.




Connector Test Adapter Kit
Used to make electrical test connections in current Weather Pack, Metri-Pack and Micro-Pack style terminals.

Terminal Test Adapter Kit: J-35616.




Circuit Tester
Used to check all Relays and Solenoids before connecting them to a new ECM. Measures the Circuit resistance and indicates pass or fail via green or red LED. Amber LED indicates current polarity. Can also be used as a non-powered continuity checker.

ECM Circuit Tester: J-34636.




Metri-Pack Terminal Remover
Used to remove 150 series Metri-Pack "pull-to-seat" terminals from connectors.

Terminal Remover: J-35689-A.




Weather Pack Terminal Remover
Used to remove Terminals from Weather Pack connectors.

Weatherpack Terminal Remover: J-28742-A.




Unpowered Test Light
Used to check wiring for complete Circuit and short to ground or voltage.

Unpowered Test Light : J-3412-A.