test light to battery voltage meaning

[pdude]

Dumb question. The Chevy mechanics manual says "Probe PCM Harness Connector CKT 424 with a test light to battery voltage".

Does "battery voltage" mean connecting the test light to 12v on your battery (positive) as opposed to connecting your test light ground (negative terminal)?

 

[RichLo]

Yea, your testing the ground circuit... clamp on batt+ will light up when you probe a good ground. Normally you clamp on ground and it will light up then you probe batt+

Just be careful as the clamp is live and will spark if your using a jumper cable laying across the engine.

 

[pdude]

Yea, your testing the ground circuit... clamp on batt+ will light up when you probe a good ground. Normally you clamp on ground and it will light up then you probe batt+

Just be careful as the clamp is live and will spark if your using a jumper cable laying across the engine.

Thanks! Will do.

 

[GoToGuy]

Will the next question be " where can I get new PCM ?"