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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 136 (Power Outlet System) >> Diagnostic Information and Procedures >> Mobile Device Wireless Charger Malfunction (with EL 51755) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE:

    It may take up to <p01> min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.

  1. Ignition/Vehicle Off and all vehicle systems Off.
  2. Disconnect the electrical connector:T22 Mobile Device Wireless Charger Module
  3. Test for less than <p01> &ohm; between the test points:Ground circuit terminal <p01> &amp;Ground<!--Name of Circuit-->
    • If <p01> &ohm; or greater 
    1. Disconnect the ground connection:<p01>
    2. Test for less than <p01> &ohm; between the test points:Ground circuit terminal <p01> @Component harness &amp;Terminal <p01>
      • If <p01> &ohm; or greater » Repair the open/high resistance in the circuit.
      • If less than <p01> &ohm; » Repair the open/high resistance in the ground connection.
    • If less than <p01> &ohm; 
  4. Ignition On/Vehicle in Service Mode.
  5. Verify a test lamp turns On between the test points:Ignition circuit terminal <p01> &amp;Ground<!--Name of Circuit-->
    • If the test lamp does not turn On and the circuit fuse is OK 
    1. Remove the test lamp.
    2. Test for less than <p01> &ohm; between the test points:Ignition circuit terminal <p01> &amp;Output terminal@<p01> Fuse
    • If the test lamp does not turn On and the circuit fuse is open 
    1. Remove the test lamp.
    2. Test for infinite resistance between the test points:Ignition circuit terminal <p01> &amp;Ground<!--Name of Circuit-->
      • If less than infinite resistance » Repair the short to ground on the circuit.
      • If infinite resistance » Replace the component:T22 Mobile Device Wireless Charger Module.
    • If the test lamp turns On 
  6. Verify the function:Wireless Charging Indicator<!--VAT7071345-->=Off<!--VAT6933-->
    • If the indicator is On 
    1. Ignition/Vehicle Off.
    2. Disconnect the electrical connector:K9 Body Control Module
    3. Test for infinite resistance between the test points:Signal circuit terminal <p01> @Component harness &amp;Ground<!--Name of Circuit-->
      • If less than infinite resistance » Repair the short to ground on the circuit.
      • If infinite resistance » Replace the component:K9 Body Control Module
    • If the indicator is Off 
  7. Connect a <p01> A fused jumper wire between the test points:Signal circuit terminal <p01> &amp;Ground circuit terminal <p01>
  8. Verify the function:Wireless Charging Indicator<!--VAT7071345-->=On<!--VAT6935-->
    • If the indicator is Off 
    1. Ignition/Vehicle Off, remove the jumper wire.
    2. Disconnect the electrical connector:K9 Body Control Module
    3. Ignition On/Vehicle in Service Mode.
    4. Test for less than <p01> V between the test points:Signal circuit terminal <p01>@Component harness&amp;Ground<!--Name of Circuit-->
      • If <p01> V or greater » Repair the short to voltage on the circuit.
      • If less than <p01> V
    5. Ignition/Vehicle Off.
    6. Test for less than <p01> &ohm; between the test points:Signal circuit terminal <p01> @Component harness&amp;Terminal <p01> @Control module harness
      • If <p01> &ohm; or greater » Repair the open/high resistance in the circuit.
      • If less than <p01> &ohm; » Replace the component:K9 Body Control Module
    • If the indicator is On 
  9. Test or replace the component:T22 Mobile Device Wireless Charger Module
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