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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Bench Testing-Engine Off

Static testing procedures allow shop testing of the transmission in the vehicle or on the bench. Completion of these tests prove out transmission electronics.
- Refer to the Diagnostic Trouble Code (DTC) Chart for the DTCs retrieved.
- Use 88 Digital Multimeter and EEC-V 104-Pin Breakout Box to perform the pinpoint tests as indicated by the retrieved DTCs.
- Repair as indicated by the pinpoint tests. Always retest the transmission and road test the vehicle after performing repairs.