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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AA14 - Spout Signal Verification



- Key "OFF".

- Disconnect Powertrain Control Module (PCM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Install breakout box and connect PCM to breakout box.

- Ensure timing switch is in "Computed" position on breakout box.

- Measure voltage between test pin 36 and test pins 40 and 60 at the breakout box during crank.

- Is voltage between 3.0 and 6.0 volts?

Yes -- Go to AA21. AA21 - Check Fuel Pressure

No -- Go to AA9. AA9 - Check Spout and PIP Circuit For Short to Power