No Response From SAS (Steering Angle Sensor)

NO RESPONSE FROM SAS (STEERING ANGLE SENSOR)





For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.






1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.

NOTE: Make sure the Ignition Off Draw (IOD) fuse is installed and battery voltage is between 10.0 and 16.0 volts.

2. Using the scan tool, select ECU view.

NOTE: A red "X" will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network.

NOTE: Check the FCM for any active CAN C hardware DTCs, perform DTC before proceeding.

Does the scan tool display a red "X" next to the module?

Yes

- Go To 2

No

- The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.

2. (Z455) GROUND CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the Steering Angle Sensor harness connector.
3. Using a 12-volt test light connected to 12-volts, check the (Z455) Ground circuit.

Does the test light illuminate brightly?

Yes

- Go To 3

No

- Repair the (Z455) Ground circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (F500) FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN OR SHORTED




1. Turn the ignition on.
2. Using a 12-volt test light connected to ground, check the (F500) Fused Ignition Switch Output circuit.

Does the test light illuminate brightly?

Yes

- Go To 4

No

- Repair the (F500) Fused Ignition Switch Output circuit for an open or short.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. (D65) CAN C BUS (+) CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the FCM C1 harness connector.
3. Measure the resistance of the (D65) CAN C Bus (+) circuit between the FCM connector and the SAS connector.

Is resistance below 5.0 Ohms?

Yes

- Go To 5

No

- Repair the (D65) CAN C Bus (+) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

5. (D64) CAN C BUS (-) CIRCUIT OPEN




1. Measure the resistance of the (D64) CAN C Bus (-) circuit between the FCM connector and the SAS connector.

Is resistance below 5.0 Ohms?

Yes

- Replace the Steering Angle Sensor (internal to clockspring).
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the (D64) CAN C Bus (-) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.