Circuit/System Testing

1. Visually inspect the yaw rate sensor/lateral accelerometer for proper and secure mounting.
   • If the sensor is improperly secured, remove and properly install the sensor.
2. Ignition OFF, disconnect the harness connector at the yaw rate sensor/lateral accelerometer.
3. Ignition OFF for 30 seconds, test for less than 15 ohms between the low reference circuit terminal 6 and ground.
   • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
4. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 1 and ground.
   • If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
   • If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
5. Ignition OFF, disconnect the harness connector at the EBCM.
6. Ignition ON, test for less than 1 volt between the following signal circuits and ground:
   • Yaw rate signal terminal 3
   • Lateral accelerometer signal terminal 2
   • If greater than the specified range, test the signal circuit for a short to voltage.
7. Test for less than infinite resistance between the following signal circuits and ground:
   • Yaw rate signal terminal 3
   • Lateral accelerometer signal terminal 2
   • If not the specified value, test the signal circuit for a short to ground.
8. Test for less than 2 ohms between the following signal circuit terminals:
   • Terminal 3 at the sensor harness connector and terminal 37 at the EBCM harness connector
   • Terminal 2 at the sensor harness connector and terminal 8 at the EBCM harness connector
   • If greater than the specified range, test the signal circuit for an open/high resistance.
9. If all circuits test normal, test or replace the yaw rate sensor/lateral accelerometer. After replacement and programming, operate the vehicle within the conditions for running the DTC and verify DTC C0186 00 does not set.
   • If the DTC sets, replace the EBCM.

C0196 28

1. Ignition OFF, disconnect the yaw rate sensor/lateral accelerometer connector and EBCM connector.
2. Test for infinite resistance between the yaw rate frequency circuit and ground.
   • If less than infinite resistance, test the yaw rate frequency circuit for a short to ground.
3. Test for less than 1 ohm of resistance on the yaw rate frequency circuit between the yaw rate sensor/lateral accelerometer connector and EBCM connector.
   • If greater than 1 ohm, test the yaw rate frequency circuit for an open/high resistance.
4. Replace yaw rate sensor/lateral accelerometer, and clear the yaw rate sensor offset value in the EBCM. If C0196 28 is still current, replace the EBCM.