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 only the following:

- Constant Control Relay Module (CCRM).
- EEC Power Relay.
- Fan Control/Low Fan Control (FC/LFC) Relay.
- High Fan Control (HFC) Relay.
- Wide Open Throttle A/C Cutoff (WAC) Relay.

- Harness circuits: B+, KPWR, FP, FPM, FC, LFC, HFC, FANM, A/C, ACCS, WAC.

- Powertrain Control Module (PCM).