Circuit/System Testing

Ignition ON, verify that DTCs U1826, or U1827 are not set.
- If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle
Ignition OFF, disconnect the yaw/lateral acceleration sensor connector.
Ignition OFF wait 1 minute, test for less than 10 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 circuits test normal, replace the EBCM.
Ignition ON, test for B+ between the ignition circuit terminal 1 and ground.
- If less than the specified value, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
If all circuits test normal, replace the yaw/lateral accelerometer sensor.