Perfomance Tool W2972 User Manual

DIGITAL AUTOMOTIVE
MULTIMETER
OWNER'S MANUAL
Stock Number W2972/W2969
FOR YOUR SAFETY,
please read these instructions carefully and retain them for future use.
WARNING!
It is the owner and/or operators’ responsibility to study all WARNINGS, operating, and maintenance instructions contained
on the product label and instruction manual prior to operation of this product. The owner/operator shall retain product
instructions for future reference.
The owner and/or operator are responsible for maintenance, maintaining all decals or warning labels and while in use,
maintaining the unit in good working order. If the owner and/or operator are not fluent in English, the product warnings and
instructions shall be read and discussed with the operators’ native language by the purchaser/owner or his designee.
Make sure that the operator comprehends its contents. Safety information shall be emphasized and understood prior to
usage. The product shall be inspected per the operating instructions.
Users of this product must fully understand these instructions. Each person operating this product must also be of sound
mind and body and must not be under the influence of any substance that might impair their vision, dexterity or judgment.
Protect yourself and others by observing all safety information.
Failure to comply with instructions could result in personal injury and/or property damage!
If you encounter any problems or difficulties, please contact our customer service department at: 1-800-426-1262 between
6:30 a.m. and 4:30 p.m. Pacific time.
Due to continuing improvements, actual product
may differ slightly from photo shown.

Perfomance Tool W2972 Specifications

General

Brand	Perfomance Tool
Model	W2972
Category	Multimeter
Language	English

Summary

Digital Automotive Multimeter Owner's Manual

Safety Warnings

Critical safety instructions and warnings prior to product operation.

Safety Information

General Safety Precautions

Adherence to rules to avoid electric shock, injury, or damage to the meter or equipment.

Basic Tests (Continued)

Resistance Test

How to measure resistance of various automotive components and circuits.

Continuity Test

Diode Test

Procedure for testing diode functionality by checking voltage drop in both directions.

Mechanical Tests

Engine RPM Measurement

Battery, Starting, and Charging System Tests

No Load Battery Test

Checking battery charge level without load to ensure it's fully charged before further tests.

Cranking Battery Load Test

Assessing battery voltage delivery to the starter motor during cranking.

Battery, Starting, and Charging System Tests (Continued)

Battery Current Draw

Identifying potential sources of excessive current draw when the ignition is off.

Finding Excessive Current Draw

Method to locate the source of excessive current draw by removing fuses sequentially.

Charging System Voltage

Testing the alternator's output voltage to ensure proper battery charging.

Engine Sensors Tests

Throttle Position/EGR Valve Sensors

Engine Sensors Tests (Continued)

MAF Sensors

Oxygen Sensor (O2) Testing

Procedures for testing O2 sensor circuits, including heater and signal wires.

Hall Effect Sensor

Testing Hall effect sensors used for proximity switching and speed detection.

MAP/BARO Sensors

Temperature Sensor

O2 Heater Circuit

EGR Valve Position Sensor

O2 Sensor Circuit

Fuse, Switch, and Solenoid Tests

Fuses/Switches Test

Checking if switches open/close properly and if fuses are blown.

Fuse, Switch, and Solenoid Tests (Continued)

Solenoids/Relays Test

Ignition System Tests

Variable Reluctance Sensor

Ignition System Tests (Continued)

Crankshaft Timing Sensor

Testing the crankshaft position sensor for voltage output during cranking.

Coil Switching ON/OFF

Pick-up Coil Resistance

Ignition Coil Testing

Fuel System Tests

Fuel System Tests (Continued)

Measuring Fuel Injector Resistance

Injector Test

Injector Wiring Harness Test