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

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AA20 - Check PIP Signal



- Key "OFF".

- Breakout box installed, Powertrain Control Module (PCM) connected.

- Reconnect Camshaft Position (CMP) sensor and Governor Control Module (GCM).

- Measure voltage between test pin 56 and test pin 16 at breakout box.

- Is voltage between 3.0 and 7.0 volts?

Yes -- Replace PCM. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Go to AA6. AA6 - Check Continuity of Ignition Ground Circuit