Actron AutoTroubleShooter CP7677 User Manual. Ignition coil switching action, Fig. 29. Actron Tools. Manuals Directory ManualsDir.com - online owner manuals library. Actron manuals. AutoTroubleShooter CP7677. Actron AutoTroubleShooter CP7677 User Manual. Functions and display definitions. Actron Tools. Actron manuals. AutoTroubleShooter CP7677. Manual Functions and display definitions – Actron AutoTroubleShooter CP7677 User Manual Page 5. Automatic Polarity Sensing The multimeter display will show a minus.

Many vehicles made since 1998 have an installed computer. This computer displays information about the car. The Actron CP9145 is a scanner that you connect to the computer. It will tell you what problems you have with the vehicle. If the scanner malfunctions, it will be harder to determine the vehicle’s problems. You have several ways to troubleshoot malfunctions.

Things You’ll Need: Phillips-head screwdriver

Plug the CP9145’s adapter firmly into the vehicle’s cigarette lighter. A loose connection will cause power failure to the CP9145. Follow prompts to press “Enter” to reset the tool if the tool enters an unrecoverable state. This sometimes happens after a vehicle communication fault.

Examine the ignition key and ensure that it is in the “On” position. If it is in the “Accessories” position, the scanner will not work. Replace the battery if the tool is running on battery power and will not turn on. Locate the battery lid on the back of the scanner and unscrew the lid with a Phillips-head screwdriver. Insert a new 9-volt battery and reattach the lid.

Tips & Warnings: Contact Actron if you are having problems that you cannot determine on your own (see Resources). Not all cars have a computer.

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Electrical Specifications

DC Volts
Range: 200mV, 2V, 20V, 200V
Accuracy :

±

(0.5% rdg + 5 dgts)

Range: 1000V
Accuracy:

±

(0.8% rdg + 5 dgts)

AC Volts
Range: 2V, 20V, 200V
Accuracy :

±

(0.8% rdg + 5 dgts)

Range: 750V
Accuracy:

±

(1.0% rdg + 4 dgts)

DC Current
Range: 200mA
Accuracy:

±

(0.8% rdg + 5 dgts)

Range: 10A
Accuracy:

Auto Troubleshooter Fix

±

(1.2% rdg + 5 dgts)

Resistance
Range: 200

Ω

, 2K

Ω

, 20K

Ω

, 200K

Ω

, 2M

Ω

Auto Troubleshooter Sound Fix

Accuracy:

±

(0.8% rdg + 5 dgts)

Range: 20M

Ω

Accuracy:

±

(1.5% rdg + 5 dgts)

Auto User Manuals

Dwell
Range: 4CYL, 6CYL, 8CYL
Accuracy:

±

(3.0% rdg + 5 dgts)

RPM
Range: 4CYL, 6CYL, 8CYL
Accuracy:

±

(3.0% rdg + 5 dgts)

Audible Continuity
Buzzer sounds at approximately less
than 30-50 Ohms.