Pinpoint Test O : The FCIM Does Not Respond To The Scan Tool
WARNING: This page is about a different car, the 2016 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Failure to disconnect the battery when instructed will result in false resistance readings. Refer to
Battery, Mounting and Cables
.
- O1 CHECK THE FCIM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: FCIM C2402 .
- Ignition ON.
- Measure the voltage between:
Positive Lead Negative Lead Pin Circuit Pin Circuit C2402-1 SBP09 (RD) - Ground
Is the voltage greater than 11 volts?
Yes GO to O2. No VERIFY the Body Control Module (BCM) fuse 9 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short. - O2 CHECK THE FCIM GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure the resistance
between:
Positive Lead Negative Lead Pin Circuit Pin Circuit C2402-6 GD374 (BK/WH) - Ground
Is the resistance less than 3 ohms?
Yes GO to O3. No REPAIR the circuit in question. - O3 CHECK THE I-CAN CIRCUITS BETWEEN THE FCIM AND THE DLC FOR AN OPEN
- Measure the resistance
between:
Positive Lead Negative Lead Pin Circuit Pin Circuit C2402-2 VDB13 (BU/GY) C251-1 VDB13 (BU/GY) C2402-3 VDB14 (VT/GY) C251-9 VDB14 (VT/GY)
Are the resistances less than 3 ohms?
Yes GO to O4. No REPAIR the circuit in question. - Measure the resistance
between:
- O4 CHECK FOR CORRECT FCIM OPERATION
- Disconnect the FCIM connector.
- Repair:
- corrosion (replace connector or terminals - clean module pins)
- damaged or bent pins - replace terminals/pins
- pushed-out pins - replace pins as necessary
- Connect the FCIM connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new FCIM. REFER to the appropriate Audio Systems article for the procedure. No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.