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)

Or, hide this message: temporarily or permanently

Engine Control Module: Service and Repair

PCM:




Powertrain Control Module (PCM):






REMOVE OR DISCONNECT:
1. Negative battery cable
2. Interior access panel
3. Connectors from PCM
4. Remove PCM from vehicle

NOTE: To prevent possible electrostatic discharge damage to the PCM, DO NOT touch the connector pins or soldered components on the circuit board.

INSTALL OR CONNECT:
1. New PCM
2. PCM connectors to PCM
3. Interior access panel
4. Negative battery cable