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Circuit/System Testing

  1. Vehicle OFF and all vehicle systems OFF, disconnect the harness connector at the S70R Steering Wheel Controls Switch - Right, Vehicle in Service Mode.
  2. Test for 11.8-12.2 V between the reference voltage circuit terminal 4 and ground.
    • If less than 11.8 V 
    1. Vehicle OFF, disconnect the harness connector at the K9 body control module.
    2. Test for infinite resistance between the reference voltage 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 in the reference voltage circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K9 body control module.
    • If greater than 12.2 V 
    1. Vehicle OFF, disconnect the harness connector at the K9 body control module, Vehicle in Service Mode.
    2. Test for less than 1 V between the reference voltage circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K9 body control module.
    • If between 11.8-12.2 V 
  3. Test for 11.8-12.2 V between the reference voltage circuit terminal 4 and signal circuit terminal 3.
    • If not between 11.8-12.2 V 
    1. Vehicle OFF, disconnect the harness connector at the K9 body control module.
    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
    3. Test for less than 2 Ω in 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 K9 body control module.
    • If between 11.8-12.2 V 
  4. Vehicle OFF, disconnect the harness connector at the K9 body control module.
  5. Test for infinite resistance between the signal circuit terminal 3 and ground.
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • If infinite resistance 
  6. Test or replace the S70R Steering Wheel Controls Switch - Right.
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