N1 Service DTC C1230 Check Rear Axle Speed Sensor

N1 DIAGNOSTIC TROUBLE CODE C1230: CHECK REAR AXLE SPEED SENSOR ELECTRICAL FAULT

- Key "OFF."

- Install the Rotunda Breakout Box or equivalent and overlay.

- Measure the resistance between Pins 22 and 21.

Is the reading between 800 and 1400 ohms?

> Yes
Go to Pinpoint Test N7. N7 Check Coil Circuit Component Connector Resistance

> No
Go to Pinpoint Test N2. N2 Check Resistance at Rear Axle Speed Sensor