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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1991 (Anti-Lock Brake System - Vehicle Dynamic Systems) >> Diagnosis And Testing >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test F: DTCs C1279, C1280, C1281, C1282, C1516, C1517, C2769 and C2770 >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

The accelerometer (lateral and longitudinal) and the yaw rate sensor are contained in the stability control sensor cluster. The sensor cluster measures the vehicle acceleration and yaw rate, then sends the signal along a secondary Controller Area Network 2 (CAN2) bus to the ABS module, circuits VCA23 (BU/WH) and VCA24 (GN/OG). Fused ignition voltage is supplied to the sensor cluster by Smart Junction Box (SJB) fuse 35 (10A) along circuit CBP35 (YE/GY). Ground for the sensor cluster is provided along circuit GD151 (BK/GN).

DTC DESCRIPTION AND FAULT TRIGGER CONDITIONS

DTC Description Fault Trigger Conditions
  • C1279 Yaw Rate Sensor Circuit Failure
  • C1281 Lateral Accelerometer Circuit Failure
  • C1517 Roll Rate Sensor Circuit Failure
  • C2769 Longitudinal Acceleration Sensor Electrical Failure
If, during normal operation or the ABS module on-demand self test, the ABS module detects an open circuit, a short to voltage or a short to ground on one or both of the CAN2  bus circuits, the appropriate DTC will be set. Also, a failure of the sensor cluster will cause the appropriate DTC to set.
  • C1280 Yaw Rate Sensor Signal Fault
  • C1282 Lateral Accelerometer Signal Fault
  • C1516 Roll Rate Sensor Signal Fault
  • C2770 Longitudinal Acceleration Sensor Plausibility Failure
If, during normal operation the ABS module does not receive the sensor cluster input, or if the input received does not agree with the input from other sensors, the appropriate DTC will be set.

This pinpoint test is intended to diagnose the following: