Circuit/System Testing

Ignition OFF, disconnect the harness connector at the Yaw Rate/Lateral Accelerometer sensor.
Test for less than 1 ohm of resistance between the ground circuit terminal 1 and ground.
- If greater than the specified range, test for an open/high resistance in the ground circuit.
Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 4 and ground.
- If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
Ignition OFF, disconnect the harness connector X3 at the Supervisory Control Module (SCM).
Ignition ON, test for 0 volts between the communication circuit terminal 52 and ground.
- If greater than the specified value, test the communication circuit for a short to voltage.
Test for 0 volts between the communication circuit terminal 72 and ground.
- If greater than the specified value, test the communication circuit for a short to voltage.
Ignition OFF, test for infinite resistance between the communication circuit terminal 52 and ground.
- If not the specified value, test the communication circuit for a short to ground.
Test for infinite resistance between the communication circuit terminal 72 and ground.
- If not the specified value, test the communication circuit for a short to ground.
Test for less than 1 ohm of resistance between the communication circuit terminals 72 and terminal 3.
- If greater than the specified range, test the communication circuit for an open/high resistance.
Test for less than 1 ohm of resistance between the communication circuit terminals 52 and terminal 2.
- If greater than the specified range, test the communication circuit for an open/high resistance.
Test for infinite resistance between the communication circuit 52 and the communication circuit 72.
- If not the specified value, test the communication circuits for a short together.
If all circuits test normal, replace the Yaw Rate/Lateral sensor.