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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Diagnostic Trouble Code Descriptions
Shift Solenoid 3-4 (SS 3-4) The 3-4 shift solenoid is used to control the 3-4/4-3 shift valve.
Transmission Function: Used to shift from third gear to fourth gear, and fourth gear to third gear.
Symptoms: Failed "ON," vehicle has lack of acceleration performance at start out.
Failed "OFF," No 3-4 upshift or 4-3 downshift.
Diagnostic Trouble Codes: 566, 3-4 shift solenoid circuit failure.