Circuit/System Testing
NOTE:
If symptom code 5A is set, refer to the Diagnostic Fault Information table for possible mechanical faults or conditions.
- Ignition OFF, disconnect the harness connector at the EBCM.
- Ignition ON, test for less than 1 V between the appropriate wheel speed sensor circuit terminals listed below and ground:
- Terminal 21 and terminal 34 for the left front sensor
- Terminal 18 and terminal 6 for the right front sensor
- Terminal 20 and terminal 33 for the left rear sensor
- Terminal 19 and terminal 31 for the right rear sensor
- If greater than the specified range, test the circuit for a short to voltage.
- Ignition OFF, test for infinite resistance between the wheel speed sensor circuit terminals listed below and ground:
- Terminal 21 and terminal 34 for the left front sensor
- Terminal 18 and terminal 6 for the right front sensor
- Terminal 20 and terminal 33 for the left rear sensor
- Terminal 19 and terminal 31 for the right rear sensor
- If less than the specified value, test the circuit for a short to ground.
- Ignition OFF, disconnect the harness connector at the wheel speed sensor.
- Test for less than 2 Ω between the wheel speed sensor harness connector terminal 1 and the EBCM harness connector terminal listed below:
- Terminal 34 for the left front sensor
- Terminal 6 for the right front sensor
- Terminal 33 for the left rear sensor
- Terminal 31 for the right rear sensor
- If greater than the specified range, test the signal circuit for an open or high resistance.
- Test for less than 2 Ω between the wheel speed sensor harness connector terminal 2 and the EBCM harness connector terminal listed below:
- Terminal 21 for the left front sensor
- Terminal 18 for the right front sensor
- Terminal 20 for the left rear sensor
- Terminal 19 for the right rear sensor
- If greater than the specified range, test the ignition circuit for an open or high resistance.
- If all circuits test normal, replace the wheel speed sensor. If the DTC resets, replace the EBCM.