Actron CP7677 Operations Instructions download pdf (Page 16)

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4. Disconnect positive (+) battery

cable.

5. Connect RED test lead to positive

(+) battery terminal.

6. Connect BLACK test lead to posi-

tive (+) battery cable.

NOTE: Do not start vehicle during this

test, because multimeter damage may

result.

7. Turn multimeter rotary switch to

10A DC (or 200 mA) position.

8. View reading on display.

• Typical current draw is 100mA.

(1mA = 0.001A)

• Refer to vehicle service manual for

manufacturers specific Engine Off

Battery Current Draw.

NOTE: Radio station presets and

clocks are accounted for in the 100mA

typical current draw.

9. Test Results.

Normal Current Draw:

Display read-

ing in Step 8 is within manufacturers

specifications.

Excessive Current Draw:

- Display reading in Step 8 is well out-

side manufacturers specifications.

- Remove Fuses from fuse box one

at a time until source of excessive

current draw is located.

- Non-Fused circuits such as head-

lights, relays, and solenoids should

also be checked as possible cur-

rent drains on battery.

- When source of excessive current

drain is found, service as necessary.

Cranking Voltage -

Battery Load Test

This test checks the battery to see if it is

delivering enough voltage to the starter

motor under cranking conditions.

Test Procedure (see Fig. 21):

1. Disable ignition system so vehicle

won’t start.

Disconnect the primary of the igni-

tion coil or the distributor pick-up coil

or the cam/crank sensor to disable

the ignition system. Refer to vehicle

service manual for disabling proce-

dure.

2. Insert BLACK test lead into COM

test lead jack.

3. Insert RED test lead into

test lead jack.

4. Connect RED test lead to positive

(+) terminal of battery.

5.

Connect BLACK test lead to nega-

tive (-) terminal of battery.

6. Turn multimeter rotary switch to

20V DC range.

7. Crank engine for 15 seconds con-

tinuously while observing display.

8. Test Results.

Compare display reading in Step 7

with chart below.

Voltage Temperature

9.6V or greater 70 °F and Above

9.5V 60 °F

9.4V 50 °F

9.3V 40 °F

9.1V 30 °F

8.9V 20 °F

8.7V 10 °F

8.5V 0 °F

If voltage on display corresponds to

above voltage vs. temperature chart,

then cranking system is normal.

If voltage on display does not corre-

spond to chart, then it is possible that

the battery, battery cables, starting sys-

tem cables, starter solenoid, or starter

motor are defective.

Fig. 21

Red Black

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 33 34

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