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

Test Notes

NOTE: You should enter this Pinpoint Test only when directed here.

REMEMBER
This Pinpoint Test is intended to diagnose the following:
- Harness Circuits: Vehicle Power (VPWR), Ignition Start/Run, EEC-V Power Relay Ground, Battery Positive Voltage B+
- EEC-V Power Relay
- Constant Control Relay Module (CCRM) (EEC-V Power Relay ground circuit only)
- Powertrain Control Module (PCM)

DESCRIPTION
For additional information on Vehicle Power (VPWR), refer to Description and Operation / EEC-V Software and Hardware / Additional System Related Hardware / Power and Ground Signals.