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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Variable Valve Timing Pressure Switch: Testing and Inspection

The scan tool indicates Diagnostic Trouble Code (DTC) P1279: A problem in the Front VTEC Pressure Switch circuit or Front VTEC Solenoid Valve circuit.

The scan tool indicates Diagnostic Trouble Code (DTC) P1259: A problem in the Rear VTEC Pressure Switch circuit or Rear VTEC Solenoid Valve circuit.

Refer to How to Display and Read Diagnostic Trouble Codes before troubleshooting.