Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Checking 5 Volt Supply Circuit

Tests 1 - 3:




Tests 4 - 6:




SYMPTOM
CHECKING 5 VOLT SUPPLY CIRCUIT

POSSIBLE CAUSES
- 5-volt supply circuit shorted to ground
- 5-volt supply wiring harness intermittent defect
- A/C pressure sensor defective
- MAP sensor defective
- Throttle position sensor defective
- PCM defective (5 volt supply circuit)