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Home >> Chevrolet >> 2012 >> Volt >> Repair and Diagnosis >> Accessories & Equipment >> Memory Modules >> Secondary And Configurable Customer Control System >> Diagnostic Information and Procedures >> Steering Wheel Controls Malfunction >> Circuit/System Testing

Circuit/System Testing

  1. Vehicle OFF, disconnect the harness connector at the S70R steering wheel control switch - right.
  2. Vehicle in Service Mode, test for B+ between the voltage reference circuit terminal 1 and ground.
    • If less than the specified value, test the voltage reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 body control module.
  3. Test for B+ between the voltage reference circuit terminal 1 and the signal circuit terminal 2.
    • If less than the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 body control module.
  4. Vehicle OFF, disconnect the X3 harness connector at the K9 body control module.
  5. Test for infinite resistance between the signal circuit terminal 2 and ground.
    • If less than the specified value, test the signal circuit for a short to ground.
  6. If all circuits test normal, test or replace the S70R steering wheel control switch - right.
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