Actron CP9135 OBD II AutoScanner - Manual (Page 23)

Troubleshooting 4-2
• Carefully inspect electrical connectors for:
- Corrosion or foreign debris on pins.
- Bent or damaged pins.
- Recessed contacts not seated properly
in housing.
- Bad wire crimps to terminals.
Connector problems are common in vehicles. Inspect carefully.
Some connectors use a special grease, called dielectric grease,
on the contacts to prevent corrosion. Do not remove. If required,
apply more grease to the connector. The grease can be obtained
from a dealership or auto parts store.
4.2 AutoScanner Does Not Power Up
• Make sure the AutoScanner’s DLC is connected correctly to the
vehicle’s DLC. Verify the pins are clean and fully seated in the DLC.
• The AutoScanner requires a
minimum of 8 volts between pin
16 (BAT+) and pin 4 (GND) to
power up. Use the flowchart
provided below to troubleshoot.
WARNING! Never Lay Tools On Vehicle Battery. You May Short
The Terminals Together Causing Harm To Yourself, The Tools
Or The Battery.
!
!
Measure resistance
between Pin 4 and
frame ground.
less than
5 ohms?
Is
battery fully
charged?
Repair Ground
circuit. Refer to a
service manual.
Charge battery.
NO
NO
YES
YES
Open exists in power
circuit. Check for a blown
fuse or an open wire. Refer
to a service manual.
Measure Voltage
between Pins 16 and 4.
Above 8V?
Contact Actron.
AutoScanner will not
power up.
NO
YES
PIN 16 (BAT+)
PIN 4 (GND)