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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Parking Brake Release System

The Air Control Programmer (ACM) controls the Park Brake Release function. Vacuum is applied to the Park Brake Release Solenoid from the Air Valve Actuator. The transaxle shifter position status signal is sent from the Powertrain Control Module (PCM) via Class 2 (Serial Data) to the ACM. The park brake is released when ignition is "ON" and the PCM indicates to the ACM that the transaxle has not been in "PARK" or "NEUTRAL" for at least 2 seconds.