Circuit/System Testing

NOTE:

You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

Ignition OFF, disconnect the harness connector at the S48A Multifunction Switch - Instrument Panel.
Test for less than 10Ω between the vehicle harness connector ground circuit terminal 2 and ground.
- If 10Ω or greater
1. Ignition OFF.
2. Test for less than 2Ω in the ground circuit, end to end.
  - If 2Ω or greater, repair the open/high resistance in the ground circuit.
  - If less than 2Ω, repair the open/high resistance in the ground connection.
- If less than 10Ω
Ignition ON.
Test for greater than 11V between the vehicle harness connector signal circuit terminal 4 and ground.
- If less than 11V
1. Ignition OFF, remove the X3 harness connector at the BCM.
2. Test for infinite resistance between the signal circuit and ground.
  - If less than infinite resistance, repair the short to ground in the circuit.
  - If infinite resistance.
3. Test for less than 2Ω in the signal circuit, end to end.
  - If 2Ω or greater, repair the open/high resistance in the signal circuit.
  - If less than 2Ω, replace the K9 Body Control Module.
- If greater than 11V
Ignition OFF, install a 3 amp fused jumper wire between vehicle harness connector signal circuit terminal 4 and ground, ignition ON.
Verify the scan tool Transmission Sport Mode parameter changes between Inactive and Active each time the jumper wire is connected to ground and then removed.
- If Active or Inactive is not displayed
  Replace the K9 Body Control Module.
- If Active and Inactive are displayed
Replace the S48A Multifunction Switch - Instrument Panel.