Fluke 88 V User manual

Model 88 V

Automotive Multimeter

Users Manual

99 Washington Street

Melrose, MA 02176

Fax 781-665-0780

TestEquipmentDepot.com

Table of Contents

Title Page

Introduction ........................................................................................................................ 1

Contacting Fluke................................................................................................................ 1

Safety Information.............................................................................................................. 1

The Meter's Features......................................................................................................... 5

Power-Up Options......................................................................................................... 13

Automatic Power-Off..................................................................................................... 13

Input AlertFeature ..................................................................................................... 13

Making Measurements ...................................................................................................... 14

Measuring AC and DC Voltage .................................................................................... 14

Measuring Temperature ............................................................................................... 15

Testing for Continuity.................................................................................................... 16

Measuring Resistance .................................................................................................. 18

Using Conductance for High Resistance or Leakage Tests........................................ 20

Measuring Capacitance................................................................................................ 21

Testing Diodes .............................................................................................................. 22

Measuring DC or AC Current ....................................................................................... 24

Measuring Frequency ................................................................................................... 27

Model 88 V

Users Manual

Measuring Duty Cycle .................................................................................................. 29

Measuring Pulse Width................................................................................................. 30

Bar Graph .......................................................................................................................... 30

Zoom Mode (Power Up Option Only)........................................................................... 30

Uses for the Zoom Mode.............................................................................................. 31

HiRes Mode ....................................................................................................................... 31

MIN MAX Recording Mode ............................................................................................... 31

Smooth Feature (Power Up Option Only)......................................................................... 32

AutoHOLD Mode ............................................................................................................... 34

Relative Mode.................................................................................................................... 34

Using the Meter for Automotive Applications.................................................................... 34

Measuring RPM ............................................................................................................ 35

Testing MAP or BP/MAP Sensors with Frequency Output ......................................... 38

Measuring Internal Resistance of an Ignition Coil ....................................................... 40

Measuring Pulse Width on a Port Fuel Injector ........................................................... 42

Testing Ripple Voltage on an Alternator ...................................................................... 44

Measuring Voltages on a Typical Oxygen Sensor ...................................................... 46

Measuring Starter Circuit Voltage Drop ....................................................................... 48

Testing the Throttle Position Sensor Voltage .............................................................. 50

Testing the Throttle Position Sensor Resistance ........................................................ 50

Isolating a Circuit Causing a Current Drain ................................................................. 52

Measuring System Voltage .......................................................................................... 54

Testing for Continuity in a Switch................................................................................. 56

Maintenance ...................................................................................................................... 58

General Maintenance ................................................................................................... 58

Testing the Fuse ........................................................................................................... 58

Replacing the Battery ................................................................................................... 59

Replacing the Fuses..................................................................................................... 60

Contents

(continued)

iii

Service and Parts .............................................................................................................. 60

Specifications..................................................................................................................... 66

General Specifications.................................................................................................. 66

Detailed Specifications ................................................................................................. 67

List of Tables

Table Title Page

1. Electrical Symbols..................................................................................................................... 4

2. 88 V Automotive Multimeter Front Controls ............................................................................. 5

3. Input Terminals ......................................................................................................................... 6

4. Rotary Switch Positions ............................................................................................................ 7

5. Pushbuttons .............................................................................................................................. 8

6. Display Features ....................................................................................................................... 11

7. Functions and Trigger Levels for Frequency Measurements .................................................. 28

8. MIN MAX Functions .................................................................................................................. 33

9. Battery Charge Voltages........................................................................................................... 54

10. Replacement Parts.................................................................................................................... 62

11. Accessories ............................................................................................................................... 65

12. AC Voltage Function Specifications ......................................................................................... 67

13. DC Voltage, Resistance, and Conductance Function Specifications...................................... 68

14. Temperature Specifications ...................................................................................................... 68

15. Current Function Specifications................................................................................................ 69

16. Capacitance and Diode Function Specifications ..................................................................... 70

17. Frequency Counter Specifications ........................................................................................... 71

Model 88 V

Users Manual

18. Frequency Counter Sensitivity and Trigger Levels.................................................................. 72

19. Electrical Characteristics of the Terminals............................................................................... 73

20. Min Max Recording Specifications ........................................................................................... 74

vii

List of Figures

Figure Title Page

1. 88 V Automotive Multimeter Front............................................................................................ 5

2. Measuring AC and DC Voltage ................................................................................................ 14

3. Testing for Continuity ................................................................................................................ 17

4. Measuring Resistance .............................................................................................................. 19

5. Measuring Capacitance ............................................................................................................ 21

6. Testing a Diode ......................................................................................................................... 23

7. Measuring Current .................................................................................................................... 26

8. Components of Duty Cycle Measurements.............................................................................. 29

9. Measuring RPM with Inductive Pickup..................................................................................... 37

10. Testing MAP or BP/MAP Sensors with Frequency Output...................................................... 39

11. Measuring Internal Resistance on an Ignition Coil .................................................................. 41

12. Measuring Pulse Width on a Port Fuel Injector........................................................................ 43

13. Testing Ripple Voltage on an Alternator .................................................................................. 45

14. Measuring Voltages on a Typical Oxygen Sensor................................................................... 47

15. Measuring Starter Circuit Voltage Drop ................................................................................... 49

16. Testing the Throttle Position Sensor Resistance..................................................................... 51

17. Isolating Circuit Causing Current Drain.................................................................................... 53

Model 88 V

Users Manual

viii

18. Measuring the No-Load Voltage of a Battery........................................................................... 55

19. Testing for Continuity in a Switch ............................................................................................. 57

20. Testing the Current Fuses ........................................................................................................ 59

21. Battery and Fuse Replacement................................................................................................ 61

22. Replaceable Parts..................................................................................................................... 64

Automotive Multimeter

Introduction

XWWarning

Read "Safety Information" before you use the

Meter.

The Model 88 V Automotive Multimeter (“the Meter”) is a

hand-held, battery-operated measurement device used for

voltage, continuity, resistance, current, diode, capacitance,

frequency, temperature, RPM, pulse width, and duty cycle

measurements.

To register your product, visit register.fluke.com

Safety Information

The Meter complies with:

•EN61010-1:2001

•ANSI/ISA S82.01-2004

•CAN/CSA C22.2 No. 1010.1:2004

•UL61010-1

•Measurement Category III, 1000 V, Pollution

Degree 2

•Measurement Category IV, 600 V, Pollution

Degree 2

In this manual, a Warning identifies conditions and actions

that pose hazards to the user. A Caution identifies

conditions and actions that may damage the Meter or the

equipment under test.

Electrical symbols used on the Meter and in this manual

are explained in Table 1.

Model 88 V

Users Manual

XWWarning

To avoid possible electric shock or personal

injury, follow these guidelines:

•Use this Meter only as specified in this

manual or the protection provided by the

Meter might be impaired.

•Do not use the Meter if it is damaged.

Before you use the Meter, inspect the

case. Look for cracks or missing plastic.

Pay particular attention to the insulation

surrounding the connectors.

•Make sure the battery door is closed and

latched before operating the Meter.

•Replace the battery as soon as the

battery indicator (M) appears.

•Remove test leads from the Meter before

opening the battery door.

•Inspect the test leads for damaged

insulation or exposed metal. Check the

test leads for continuity. Replace

damaged test leads before you use the

Meter.

•Do not apply more than the rated voltage,

as marked on the Meter, between the

terminals or between any terminal and

earth ground.

•Never operate the Meter with the cover

removed or the case open.

•Use caution when working with voltages

above 30 V ac, 42 V ac peak, or 60 V dc.

These voltages pose a shock hazard.

•Use only the replacement fuses specified

by the manual.

•Use the proper terminals, function, and

range for measurements.

•Avoid working alone.

•When measuring current, turn off circuit

power before connecting the Meter in the

circuit. Remember to place the Meter in

series with the circuit.

•When making electrical connections,

connect the common test lead before

connecting the live test lead; when

disconnecting, disconnect the live test

lead before disconnecting the common

test lead.

•Do not use the Meter if it operates

abnormally. Protection may be impaired.

When in doubt, have the Meter serviced.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

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