Restraints Control Module (RCM)
The restraint control module (RCM) is on the ISO 9141 network. The RCM controls the deployment of the air bags based on sensor input. For additional information, refer to AIR BAG RESTRAINT SYSTEMS .
Vehicle Security Module
The vehicle security module is on the UBP communication network. The vehicle security module controls a variety of systems
- Windshield wipers
- Warning chimes
- Interior lamps
- Exterior lamps
- Power windows
- Perimeter security
- Remote keyless entry (RKE)/keyless entry
- Lock functions
- Monitors the entry doors and radio
For additional information, refer to MULTIFUNCTION ELECTRONIC MODULE .
Powertrain Control Module (PCM)
The powertrain control module (PCM) is on the SCP communication network. The PCM controls the engine for better fuel economy, emissions control, and failure mode detection and storage. For additional information, refer to ELECTRONIC ENGINE CONTROLS .
Electronic Automatic Temperature Control (EATC) Module
The electronic automatic temperature control (EATC) module is on the UBP communication network. The EATC module controls automatic climate functions that maintain the vehicle interior temperature at a constant setting. For additional information, refer to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .
Driver Seat Module
The driver seat module (DSM) is on the UBP communication network. The DSM controls the positioning and programming of the driver seat, pedals and both outside mirrors. For additional information, refer to SEATING .
Parking Aid Module
The parking aid module is connected to the ISO communication network (Expedition only), and the UBP communication network (Navigator only). The module controls sensors in the rear bumper that detect close objects when the transmission is in REVERSE. For additional information, refer to Section PARKING AID .
Four-Wheel Drive (4WD) Control Module
The four-wheel drive (4WD) control module is on the UBP communication network. The 4WD control module controls the four-wheel drive functions for the vehicle. For additional information, refer to FOUR WHEEL DRIVE SYSTEMS .
Instrument Cluster
The instrument cluster is on the SCP communication network. The instrument cluster also uses the UBP network to communicate with other modules on the UBP network. It is an analog face cluster with a digital odometer. The instrument cluster displays a variety of information. For additional information, refer to INSTRUMENT CLUSTER .
Tire Pressure Monitoring System Module
The tire pressure monitoring system module is on the SCP communications network. The module and sensors monitor tire pressure and alert the driver when a concern may exist. For additional information, refer to WHEELS & TIRES .
Power Liftgate Module
The power liftgate module is on the UBP network. The module controls the motor that opens and closes the liftgate. For additional information, refer to BODY CLOSURES .
Air Suspension Control Module
The air suspension control module is on the UBP communication network and controls the air compressor motor (through a solid state relay) and all system solenoids. The module also provides power to front and rear height sensors on four-wheel air suspension systems, or rear height sensors on the rear-wheel suspension systems. The module controls vehicle height adjustments by monitoring two height sensors, vehicle speed, a steering sensor, acceleration input, the door ajar signal, transfer case signals and the brake switch. The module also conducts all fail-safe and diagnostic strategies and contains self-test and communication software for testing the vehicle and module. For additional information, refer to STEERING COLUMN SWITCHES .
Climate Controlled Seat Module
The driver and passenger climate controlled seat modules are on the UBP network. The climate controlled seat modules control the temperature of the driver and passenger seats. For additional information, refer to SEATING .
The navigation module is on the SCP communications network (Navigator only). The navigation module controls the global positioning system on the vehicle. For additional information, refer to NAVIGATION SYSTEM .
Scheme 2
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, connect the diagnostic tool to the data link connector and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle: Check that the program card is correctly installed. check the connections to the vehicle. check the ignition switch position.
- If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
- Go To «PINPOINT TEST PC»(ref-209944-S17666342752005121200000) .
