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DTC C0245: Wheel Speed Sensor Frequency Error: Troubleshooting

TEST PROCEDURE - WHEEL SPEED SENSOR FREQUENCY ERROR

Step Action Value(s) Yes No
1 Visually inspect the wiring for the front wheel speed sensors.
Is there any damage?		 - Go to Step 2 Go to Step 3
2 Check that the correct outer Constant Velocity (CV) joints are installed on the vehicle. The front speed rings have 47 teeth and the rear speed rings have 29 teeth.
Is the repair complete?		 - System OK -
3 Check fuse Ef2 in the engine fuse block.
Is one of these incorrect?		 - Go to Step 4 Go to Step 5
4 Replace the incorrect outer CV joint with the proper unit.
Is the repair complete?		 - System OK -
5
  1. Disconnect the wheel speed sensor harnesses from the wheel speed sensor connectors.
  2. Measure the wheel speed sensor resistance at the wheel speed sensor connector terminals.

Does the resistance fall within the specified values for both wheel speed sensors?		 1,280 - 1,920 Ω Go to Step 7 Go to Step 6
6 Replace the faulty wheel speed sensor.
Is the repair complete?		 - System OK -
7
  1. Disconnect ABS wiring harness connector.
  2. Check each wheel speed sensor harness for a short circuit between its wires with a digital ohmmeter attached to the two terminals at the harness side of the wheel speed sensor connector.
  3. Also check each wheel speed sensor harness wire for a short to ground from the connector terminals.

Is there any short circuit in either wheel speed sensor harness?		 - Go to Step 8 Go to Step 9
8 Repair the short circuit in the wiring or from a wiring harness to ground.
Is the repair complete?		 - System OK -
9 Check the continuity of the wiring in both front wheel speed sensor circuits between the ABS wiring harness connector and the wheel speed sensor connector on each side of the vehicle.
  1. The left side uses terminals 6 and 7 at the ABS wiring harness connector.
  2. The right side uses terminals 4 and 5 at the ABS wiring harness connector.

Is continuity good for both harnesses?		 - Go to Step 11 Go to Step 10
10 Repair the discontinuity found in the front wheel speed sensor harness.
Is the repair complete?		 - System OK -
11
  1. Visually inspect the wiring for the rear wheel speed sensors.
  2. Check that the wheel speed sensors are properly mounted and that the retaining bolts are properly tightened.

Is there any damage?		 - Go to Step 12 Go to Step 13
12 Repair or replace components as required.
Is the repair complete?		 - System OK -
13 Remove each wheel speed sensor from the rear knuckles and inspect the toothed ring through the wheel speed sensor mounting holes.
  1. Check for any damaged or missing teeth.
  2. Check that the ring is properly positioned under the wheel speed sensor.

Is there any damage or other fault with either speed ring?		 - Go to Step 14 Go to Step 15
14 Replace the rear wheel hub with the proper unit.
Is the repair complete?		 - System OK -
15
  1. Disconnect the rear wheel speed sensor harnesses from the wheel speed sensor connectors.
  2. Measure the wheel speed sensor resistance at the wheel speed sensor connector terminals.

Does the resistance fall within the specified values for both wheel speed sensors?		 1,280 - 1,920 Ω Go to Step 17 Go to Step 16
16 Replace the faulty wheel speed sensor.
Is the repair complete?		 - System OK -
17
  1. The ABS wiring harness connector should still be disconnected. Disconnect it now if it is not.
  2. Check each wheel speed sensor harness for a short circuit between its wires with a digital ohmmeter attached to the two terminals at the harness side of the wheel speed sensor connector.
  3. Also check each wheel speed sensor harness wire for a short to ground from the connector terminals.

Is there any short circuit in either wheel speed sensor harness?		 - Go to Step 18 Go to Step 19
18 Repair the short circuit in the wiring or from a wire to ground.
Is the repair complete?		 - System OK -
19 Check the continuity of the wiring in both rear wheel speed sensor circuits between the ABS wiring harness connector and the wheel speed sensor connector on each side of the vehicle.
  1. The left side uses terminals 8 and 9 at the ABS wiring harness connector.
  2. The right side uses terminals 1 and 3 at the ABS wiring harness connector.

Is continuity good for both harnesses?		 - Go to Step 21 Go to Step 20
20 Repair the discontinuity found in the rear wheel speed sensor wheel speed sensor harness or connector C110.
Is the repair complete?		 - System OK -
21 Replace the EBCM unit.
Is the repair complete?		 - System OK -
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