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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Breakout Box







A Rotunda EEC-IV Breakout Box 014-00322 or equivalent can also be used for convenience during Pinpoint Testing.

Testing for the IVSC is divided into two formats: the Self Test and Pinpoint Tests. The Self Test is a functional IVSC system test. The Pinpoint Tests are specific component tests.

The Self Test checks all IVSC components except the VSS, which must be tested separately. To test and service the IVSC system, perform the Self Test first. If the system passes, check the VSS. If diagnostic trouble codes are generated, perform only the Pinpoint Test specified by that particular diagnostic trouble code.

After all test and services have been completed, repeat the entire Self Test to
verify that the IVSC system operates properly.