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Home >> Chevrolet >> 2002 >> Chevy Express G2500, Van Cargo Extended, 6.5 F >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control Modules >> System Tests >> Test A: Scan Tool Does Not Power Up >> Description
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Test A: Scan Tool Does Not Power Up: Description

The Data Link Connector (DLC) provides battery positive voltage for the scan tool at terminal 16 and ground at terminal 4. DLC provides class 2 signal at terminal 2 and signal ground at terminal 5. Scan tool will power up with the ignition OFF.

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