Perfomance Tool W2972 Owner's Manual
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Perfomance Tool W2972 Owner's Manual

Digital automotive multimeter
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DIGITAL AUTOMOTIVE
MULTIMETER
Stock Number W2972/W2969
Due to continuing improvements, actual product
may differ slightly from photo shown.
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.
OWNER'S MANUAL
FOR YOUR SAFETY,
please read these instructions carefully and retain them for future use.

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Summary of Contents for Perfomance Tool W2972

  • Page 1 DIGITAL AUTOMOTIVE MULTIMETER Stock Number W2972/W2969 OWNER'S MANUAL Due to continuing improvements, actual product may differ slightly from photo shown. 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.

  • Page 2: Table Of Contents

    INDEX Cover Page pg. 1 Mass Air Flow MAF Sensor pg. 9 Index pg. 2 Temperature Sensor pg. 9 Safety Information pg. 3 Hall Effect Sensor pg. 10 Electrical Symbols pg. 3 Fuse/Switch/Solenoid Tests pg. 10 Specifications pg. 3 Fuses/Switches pg.

  • Page 3: Operating Temperature

    ELECTRICAL SYMBOLS DC (Direct Current) DC or AC AC (Alternating Current) Low battery Warning. Refer to the manual Earth ground Dangerous voltage may be present Fuse Diode Continuity test AUTO Auto range Double insulated SPECIFICATIONS Display : LCD, 1999 Counts updates 2/sec LCD size : 46 x 24mm Polarity Indication...

  • Page 4: Insert Black Test Lead Into Com Test Lead Jack

    BASIC TESTS CONT. Continuity Test removing wires from a threaded power terminal. A quick way to check if you have an open or closed Separate the wiring harness at the plug, or worst case circuit. The meter beeps when the circuit is closed scenario, cut the wires.

  • Page 5: Mechanical Tests

    MECHANICAL TESTS BATTERY/STARTING/CHARGING Engine RPM No Load Battery Test When checking engine RPM the meter results must Before testing the starting/charging system, first test be multiply by 10 to get the final figure. For the battery to make sure it is fully charged. example, if your meter display reads 65 and is set to 6 cylinder RPM, the actual engine RPM is 10 1.

  • Page 6: Battery Current Draw

    BATTERY/STARTING/CHARGING CONT. Battery Current Draw 7. With accessories in the off position, no radio, or Test to determine the amount of current being drawn lights etc. View and record the results from the display. from the battery with the ignition key off. This test 8.

  • Page 7: Add The Alligator Clips And Connect The Red

    ENGINE SENSORS TESTS CONT. MAF vs MAP switch, still typically both signal and idle pins are in the center. Manifold Absolute Pressure (MAP) is a sensor to 4. Add the alligator clips and connect the RED measure vacuum, the computer calculates the clip to the sensors POWER pin.

  • Page 8: O2 Heater Circuit

    ENGINE SENSORS TESTS CONT. Use the following equation to convert your recorded Any time dealing with the exhaust system let the RPM to Frequency Hz = RPM ÷ 30. vehicle cool down before proceeding. Although these sensors can be checked in the vehicle, the Typical Vacuum to Frequency Results (Ford) following test is done with the sensor removed.

  • Page 9: Temperature Sensor

    ENGINE SENSORS TESTS CONT. Zirconia Sensor: Meter display reading should be >0.6V locations. Typically you’ll find the signal pin in the center of the three pins. Titania Sensor: Meter display should show variable For this test you’ll need to back probe or pierce the resistance as flame temperature changes.

  • Page 10: Hall Effect Sensor

    ENGINE SENSORS TESTS CONT. Perform the following test on an engine that has not systems to determine camshaft and crankshaft been run or has cooled. position. This enables the ECU to know the optimum time to fire the ignition coil, and turn on the 1.

  • Page 11: Solenoid/Relays

    IGNITION SYSTEM TESTS CONT. FUSE/SWITCH/SOLENOID TESTS CONT. If you hear a tone the fuse is good. If there is no ferrous objects. Reluctance sensor are used tone the fuse is blown and needs to be replaced. whenever the vehicle’s ECU needs to know speed and/or the position of a rotating object.

  • Page 12: View The Reading On The Display, Subtract The Test

    IGNITION SYSTEM TESTS CONT. 1. Insert BLACK test lead into COM test lead jack. identify both the primary ignition coil terminals, (+) ° Ⅴ 2. Insert RED test lead into test lead jack. positive and the (-) negative terminals. Once 3.

  • Page 13: Coil Switching On/Off

    IGNITION SYSTEM TESTS CONT. Primary side of the coil is >2.0Ω. Test the Coil-On-Plug Insulators for breaks and Secondary side of the coil range is on <6 or >35KΩ. those systems that mount their ignition coils away from the spark plugs. Coil Switching ON/OFF The primary circuit is driven by closing a switch to 1.

  • Page 14: Manufacturers Specifications

    FUEL SYSTEM TESTS ° Ⅴ 4. Insert RED test lead into measurement. The MC solenoid’s purpose is to test lead jack. maintain an air/fuel ratio of 14.7 to 1. 5. Turn the meters range selector to the 200Ω setting. This test can verify if the solenoid dwell is varying as Because of the sensitivity of this test touch the two designed.

  • Page 15: Maintenance & Troubleshooting

    MAINTENANCE & TROUBLESHOOTING Overrange Indication If the 1 or -1 appears on the left side of the display the multimeter is overranged. This is when a range has been selected that is lower than what the meter is currently reading. Increase the range until this disappears.

  • Page 16: Warranty

    LIMITED WARRANTY PERFORMANCE TOOL extends only the following warranties, and only to original retail purchasers. These warranties give specific legal rights. Except where prohibited by local law, the law of the State of Washington governs all warranties and all exclusions and limitations of warranties and remedies.

This manual is also suitable for:

W2969

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