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)

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Test Notes

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

REMEMBER
This Pinpoint Test is intended to diagnose the following:
- Throttle Position (TP) Sensor
- Binding and Sticking Throttle Linkage
- Harness Circuits: TP SIG, SIG RTN, VREF, Vehicle Power (VPWR), Power Ground (PWR GND)
- Powertrain Control Module (PCM)

DESCRIPTION
For additional information on the Throttle Position (TP) sensor, refer to Description and Operation / EEC-V Software and Hardware / PCM Related Inputs.


NOTE: The normal range of the throttle angle measurement for the Throttle Position (TP) sensor is 0 to 85 degrees.