Circuit Description
The scan tool will report zero yaw rate as 2.5 Volts without a sensor bias present. The sensor bias compensates for electronic signal errors, temperatures changes and manufacturing differences. With the vehicle at rest the voltage should be 2.5 volts.
Conditions for Running the DTC
| • | The fault is detected when the ignition is ON. |
| • | The vehicle speed is greater than 5 km/h (3 mph). |
Conditions for Setting the DTC
The yaw rate input voltage is less than 0.15 Volts or greater than 4.85 Volts for less than 1 second.
Action Taken When the DTC Sets
| • | The code is displayed on the scan tool as DTC C0196. |
| • | The rear wheel steering system remains functional. |
Conditions for Clearing the DTC
| • | The conditions for the DTC are not currently present. |
| • | The rear wheel steering control module receives a clear code command from the scan tool. |
| • | The DTC clears after 100 malfunction free ignitions cycles. |
Diagnostic Aids
| • | Inspect for poor connections at the harness connector of the rear wheel steering control module and Yaw Rate sensor/Lateral Accelerometer sensor connector. Refer to Testing for Intermittent Conditions and Poor Connections , and to Connector Repairs in Wiring Systems. |
| • | Observe the rear wheel steering mode select switch. If all of the mode indicator LEDs are illuminated the rear wheel steering control module has lost its memory settings and the scan tool must be used to re-calibrate the rear wheel steering alignment data in the rear wheel steering control module. Refer to Wheel Alignment Measurement . |
| • | The system can have DTC C0196 and 4-Wheel Steering will still function normally. |
Yaw Rate Sensor -- Voltage
| • | O yaw = 2.5 volts |
| • | Proportional output voltage is 0.25 to 4.75 volts |
| • | Output is used to determine |
| Direction of Rotation (Which Way) |
| Rate of Rotation (How Fast) |
| • | Unit is sealed |
| • | Output Cannot Determine Absolute Position |
Yaw Rate Sensor -- Voltage
Test Description
The numbers below refer to the step numbers on the diagnostic table.
-
Tests for the proper operation of the circuit in the high voltage range.
-
Tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.
-
Tests for a short to ground in the 5 Volt reference circuit.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Rear Wheel Steering Schematics | ||||
1 | Did you perform the Diagnostic System Check-Rear Wheel Steering? | -- | Go to Step 2 | |
2 |
Does the scan tool indicate that the Yaw Rate Sensor Input parameter is within the specified range? | 2.40 - 2.60 | Go to Diagnostic Aids | Go to Step 3 |
Does the scan tool indicate that the Yaw Rate Sensor Input parameter is greater than the specified value? | 4.85 V | Go to Step 4 | Go to Step 8 | |
Does the scan tool indicate that the Yaw Rate Sensor Input parameter is less than the specified value? | 0.15 V | Go to Step 5 | Go to Step 9 | |
Does the scan tool indicate that the Yaw Rate Sensor Input parameter is greater than the specified value? | 4.85 V | Go to Step 7 | Go to Step 6 | |
6 | Test the 5 Volt reference circuit of the yaw sensor for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 12 |
7 | Test the 5 Volt reference circuit of the yaw rate sensor for a short to voltage, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 11 |
8 | Test the signal circuit of the yaw rate sensor for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 12 |
9 | Test the signal circuit of the yaw rate sensor for a short to voltage, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 10 |
10 | Test the ground circuit of the yaw rate sensor for a short to voltage, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 12 |
11 | Inspect for poor connections at the harness connector of the Yaw Rate sensor/Lateral Accelerometer sensor connector. . Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 13 |
12 | Inspect for poor connections at the harness connector of the rear wheel steering control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 14 |
13 |
Important: Perform the Learn Lateral Accelerometer. Replace the Yaw Rate sensor/Lateral Accelerometer sensor. Refer to Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement in Rear Wheel Steering. Did you complete the replacement? | -- | Go to Step 15 | -- |
14 |
Important: Perform the Learn Alignment procedure. Refer to Wheel Alignment Measurement in Wheel Alignment. Replace the rear wheel steering module. Refer to Rear Wheel Steering Control Module Replacement Did you complete the replacement? | -- | Go to Step 15 | -- |
15 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
