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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VSS1 - VSS Signal to PCM

- Key OFF.

- Install Breakout Box.

- Key ON.

- Raise the vehicle on hoist.

- Measure the DC voltage at BOB Test Pin VSS while spinning the front tires with the vehicle in D range.

- Does the voltage alternate between 0 and 5 volts?

Yes -- VSS circuit OK.

If sent to this test by a Component Verification Test, Return to Diagnostic Routines. Testing and Inspection

No -- Go to VSS2. VSS2 - Check VSS Wire to PCM For Open