No Power To Tech2 Troubleshooting Tables; Power Source: Dlc Cable - GMC Tech2 User Manual

No Power to Tech2 Troubleshooting Tables

Use the following tables to diagnose, isolate, and correct power source problems that may
cause a No Power condition to your Tech2 scan tool. To help determine power supply
source, see Power Supplies section.
Step
1 Does vehicle support power through
DLC cable connection exclusively?
(If you are not sure, consult your
service manual.)
2 Using a digital multi-meter (DMM),
verify vehicle battery voltage.
Is battery fully charged?
3 Verify connection at vehicle DLC
connector for loose or damaged
pin(s).
Did you find a problem?
4 1. Disconnect DLC cable from
vehicle.
2. Power on Tech2 using alternate
power source at DLC cable power
jack connection.
Did your Tech2 power on?
5 Remove DLC cable from Tech2 and
attach alternate power supply at VCI
power jack connection located at
bottom of Tech2.
Does Tech2 power on?
Troubleshooting table for DLC cable "No Power"

Power Source: DLC Cable

Action
General Motors Tech2 User Guide
Yes
Go to Step 2 Use alternate power
Go to Step 3 Charge battery
Repair Go to Step 4
connector.
(Consult
vehicle service
manual.)
Problem with Go to Step 5
vehicle.
(Consult
vehicle service
manual)
Replace DLC Problem with Tech2.
cable. Contact Customer
Support.
No
68