Normal Operation and Fault Conditions
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
The RCM monitors the passenger door and the second row left side impact sensors and circuits for the following faults:
- Open circuit
- Short to voltage
- Short to ground
- Faulted passenger door side impact sensor
- Faulted second row left side impact sensor
NOTE:
The second row left side impact sensor also known as the left C-pillar side impact sensor.
If a fault is detected, the RCM stores DTC B1415:11, B1415:12, B1415:13, B1415:96, B1418:11, B1418:12, B1418:13 or B1418:96 in memory and sends a message to the IPC to illuminate the airbag warning indicator.
The RCM communicates with each impact sensor. If the RCM is unable to communicate with the sensor, a DTC is stored in memory. A CMDTC no operation (failure type: 93) can be set by a short to voltage on the return circuit of the impact sensor.
If a fault is detected, the RCM stores DTC B1415:11, B1415:12, B1415:13, B1415:96, B1418:11, B1418:12, B1418:13 or B1418:96 in memory and sends a message to the IPC to illuminate the airbag warning indicator.
The RCM communicates with each impact sensor. If the RCM is unable to communicate with the sensor, a DTC is stored in memory. A CMDTC no operation (failure type: 93) can be set by a short to voltage on the return circuit of the impact sensor.
PPT Z RCM DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1415:11 | Driver Side Restraints Sensor 2: Circuit Short to Ground | Sets when the RCM senses a short to ground from the driver C-pillar side impact sensor feed circuit, a short to ground from the passenger door side impact sensor feed circuit, a short to voltage from the driver C-pillar side impact sensor feed circuit that is less than the normal sensor operating voltage, or a short to voltage from the passenger door side impact sensor feed circuit that is less than the normal sensor operating voltage. |
| B1415:12 | Driver Side Restraints Sensor 2: Circuit Short to Battery | Sets when the RCM senses a short to voltage from the driver C-pillar side impact sensor feed or return circuit or from the passenger door side impact sensor feed or return circuit that is greater than the normal sensor operating voltage. |
| B1415:13 | Driver Side Restraints Sensor 2: Circuit Open | Sets when the RCM senses an open from the driver C-pillar side impact sensor feed or return circuit, or a short to voltage from the sensor feed or return circuit that is within a predetermined range from the normal sensor operating voltage. |
| B1415:96 | Driver Side Restraints Sensor 2: Component Internal Failure | Sets when the RCM senses a short to ground from the driver C-pillar side impact sensor feed circuit, a short to ground from the passenger door side impact sensor feed circuit, a short to voltage from the driver C-pillar side impact sensor feed circuit that is less than the normal sensor operating voltage, or a short to voltage from the passenger door side impact sensor feed circuit that is less than the normal sensor operating voltage. |
| B1418:11 | Passenger Side Restraints Sensor 1: Circuit Short to Ground | Sets when the RCM senses a short to ground from the driver C-pillar side impact sensor feed circuit, a short to ground from the passenger door side impact sensor feed circuit, a short to voltage from the driver C-pillar side impact sensor feed circuit that is less than the normal sensor operating voltage, or a short to voltage from the passenger door side impact sensor feed circuit that is less than the normal sensor operating voltage. |
| B1418:12 | Passenger Side Restraints Sensor 1: Circuit Short to Battery | Sets when the RCM senses a short to voltage from the driver C-pillar side impact sensor feed or return circuit or from the passenger door side impact sensor feed or return circuit that is greater than the normal sensor operating voltage. |
| B1418:13 | Passenger Side Restraints Sensor 1: Circuit Open | Sets when the RCM senses an open from the passenger door side impact sensor feed or return circuit, or a short to voltage from the sensor feed or return circuit that is within a predetermined range from the normal sensor operating voltage. |
| B1418:96 | Passenger Side Restraints Sensor 1: Component Internal Failure | Sets when the RCM senses a short to ground from the driver C-pillar side impact sensor feed circuit, a short to ground from the passenger door side impact sensor feed circuit, a short to voltage from the driver C-pillar side impact sensor feed circuit that is less than the normal sensor operating voltage, or a short to voltage from the passenger door side impact sensor feed circuit that is less than the normal sensor operating voltage. |