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

You should enter this Pinpoint Test only when directed here.

This Pinpoint Test is intended to diagnose the following:
- Knock Sensor (KS)
- Harness circuits: KS and SIG RTN
- Powertrain Control Module (PCM)

DESCRIPTION
For additional information on the Knock Sensor (KS), refer to Description and Operation / EEC-V Software and Hardware / EEC-V Hardware / PCM Related Inputs.