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Home >> Chevrolet >> 2012 >> Suburban C1500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Antilock Brake System - Non-Hybrid Greater Than/Equal To 3900 Kg (8600 Lb) GVW) >> Diagnostic Information and Procedures >> DTC C0710 >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the steering angle sensor. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 20 Ω between the low reference circuit terminal 2 and ground.
    • If 20 Ω or greater 
    1. Ignition Off, disconnect the harness connector at the EBCM.
    2. Test for less than 2 Ω in the low reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the EBCM.
    • If less than 20 Ω 
  3. Ignition ON.
  4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
    • If less than 4.8 V 
    1. Ignition OFF, disconnect the harness connector at the EBCM.
    2. Test for infinite resistance between the 5 V reference circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test to less than 2 Ω in the 5 V reference circuit end to end.
      • If 2 Ω for greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the EBCM.
    • If greater than 5.2 V 
    1. Ignition OFF, disconnect the harness connector at the EBCM, ignition ON.
    2. Test for less than 1 V between the 5 V reference circuit terminal 1 and ground
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the EBCM.
    • If between 4.8-5.2 V 
  5. Test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and the signal circuit terminal 6.
    • If less than 4.8 V 
    1. Ignition OFF, disconnect the harness connector at the EBCM.
    2. Test for less than 2 Ω in the signal circuit end to end.
      • If greater than 2 Ω, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the EBCM.
    • If greater than 5.2 V 
    1. Ignition OFF, disconnect the harness connector at the EBCM, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If greater than 1 V, repair the short to voltage on the circuit.
      • If less than 1 V, replace the EBCM.
    • If between 4.8-5.2 V 
  6. Ignition OFF, disconnect the harness connector at the EBCM.
  7. Test for infinite resistance between the signal circuit terminal 9 and ground.
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • If infinite resistance 
  8. Connect the harness connector at the EBCM.
  9. Ignition ON.
    10. NOTE:

    When measuring voltage at the steering angle sensor harness connector, the voltage values are based on a battery charge of 12.5 V and the steering wheel is in the center position.

  10. Test for 6.8-11.7 V between the signal circuit terminals listed below and ground with the steering wheel in the center position.
    • Terminal 3
    • Terminal 4
    • Terminal 5
    • If less than 6.8 V 
    1. Ignition OFF, disconnect the harness connector at the EBCM.
    2. Test for infinite resistance between the signal circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2 Ω on the signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the EBCM.
    • If greater than 11.7 V 
    1. Ignition OFF, disconnect the harness connector at the EBCM, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the EBCM.
    • If between 6.8-11.7 V 
  11. Test or replace the steering angle sensor.
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