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High Speed GMLAN Initial Test: Notes

WARNING: This page is about a different car, the 2008 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, test for less than 1.0 ohm of resistance between the data link connector (DLC) ground circuit terminal 5 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  2. Disconnect the 2nd and 3rd combs from the JX200 splice pack.
  3. Install 3 amp fused jumper wires between the following JX200 terminals.
    • Terminal 21 and terminal 22
    • Terminal 32 and terminal 33
    • Terminal 12 and terminal 16
  4. Ignition ON, attempt to communicate with the electronic suspension control module (ESC).
    • If communication is established refer to DIAGNOSTIC 2 .
    • If communication is not established, refer to DIAGNOSTIC 1 .
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