Central Control Module
CENTRAL CONTROL MODULE (CCM) REPLACEMENTThe CCM should only be replaced if diagnostics direct you specifically to do so. Most system problems are traceable to faulty wiring, connectors, or components. The CCM itself is very reliable, and is not likely the cause of a fault. CCM replacement before complete diagnosis is performed will likely lead to a recurrence of the fault.
If a CCM is replaced, the service CCM must be programmed for the PASS-Keys(R) which came with the vehicle. When replacing the CCM, it will also be necessary to program the Electrically Erasable Programmable Read-Only Memory EEPROM chip in the new CCM. The EEPROM stores information such as option content, odometer mileage, etc. Refer to the Tech 1 (T-1) or CAMS (T-100) User Instructions for detailed programming information.
Do NOT drive the vehicle more than 100 miles after CCM replacement before performing the EEPROM downloading procedure; doing so will make it impossible to download odometer information. Also, until the odometer mileage is downloaded, until the vehicle is driven 16 miles or more, or until the Tech 1 is used to communicate with any vehicle system, the interior (dome) light timer is set for only 10 seconds of operation. After one of these three situations occur interior light operation will be normal.
Before replacing a CCM due to a PASS-Key(R) Codes 51-65, make sure the PASS-Key(R) resistor contacts are clean and free of any grease, oil, etc. These substances can interfere with the PASS-Key(R) detection circuit, possibly causing the CCM to set a code when a true fault does not exist.
REMOVE OR DISCONNECT
1. Negative battery cable,
2. Knee bolster, drivers side, and knee bolster inner bracket L/H.
3. Unclip radio speaker amplifier relay and fuel pump # 2 relay (LT5) from multi-use relay bracket and relocate out of the way.
4. Slide the CCM to left and tilt up to access harness connectors.
5. Harness connectors from CCM.
6. Slide CCM further to left and tilt downward 45° and remove.
CAUTION: The electrical connectors are designed to fit in only one way; there are indexing tabs and slots on both halves of the connector. Forcing the connector into place is not necessary if it is being installed with the proper orientation. Failure to take care to match the indexing tabs and slots to ensure the connector is being installed correctly can cause damage to the connector, the module or other vehicle components or systems.
INSTALL OR CONNECT
1. Tilt CCM upward at 45° angle and slide into opening.
2. Tilt CCM in opposite direction and install harness connectors.
3. Slide CCM to right and align CCM bayonets in holes in knee bolster inner bracket - RH.
4. CCM bracket to CCM.
5. Relays to multi-use relay bracket.
6. Knee bolster inner bracket and knee bolster, drivers side.
7. Negative battery cable.