LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lincoln >> 2003 >> Town Car Protection Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 767 (Module Communications Network) >> Diagnosis And Testing >> Communications Network >> Pinpoint Test C: The Restraint Control Module (RCM) Does Not Respond To The Diagnostic Tool >> Normal Operation
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Normal Operation

WARNING: This page is about a different car, the 2003 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

The RCM communicates with the diagnostic tool through the ISO 9141 communications network circuit 4-EE1 (GY/RD). If circuit 4-EE1 (GY/RD) becomes open or shorted to ground communications to that module will not be possible. Check circuit 4-EE1 (GY/RD) between the RCM C310a and the DLC C251. Total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms there is an open in circuit 4-EE1 (GY/RD), damage to the DLC C251, in-line C212 or damage to the RCM C310a.

scientia non olet · About LEMON Manuals