Circuit/System Testing

Green Indicator Test

1. Ignition OFF/vehicle OFF, and all vehicle systems OFF, disconnect the harness connector at the S51 Telematics Button Assembly. It may take up to 2 min for all vehicle systems to power down.
2. Test for less than 10 Ω between the ground circuit terminal 6 and ground.
   • If 10 Ω or greater 
   1. Ignition OFF/vehicle OFF.
   2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
   • If less than 10 Ω 
3. Ignition ON/vehicle in Service Mode.
4. Test for less than 1 V between the control circuit terminal 4 and ground while commanding the Green Indicator OFF with a scan tool.
   • If 1 V or greater 
   1. Ignition OFF/vehicle OFF, disconnect the X1 harness connector at the K73 Telematics Communication Interface Control Module, ignition ON/vehicle in Service Mode.
   2. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K73 Telematics Communication Interface Control Module.
   • If less than 1 V 
5. Test for greater than 8 V between the control circuit terminal 4 and ground while commanding the Green Indicator ON with a scan tool.
   • If 8 V or less 
   1. Ignition OFF/vehicle OFF, disconnect the X1 harness connector at the K73 Telematics Communication Interface Control Module.
   2. Test for infinite resistance between the control 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 control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K73 Telematics Communication Interface Control Module.
   • If greater than 8 V 
6. Test or replace the S51 Telematics Button Assembly.

Red Indicator Test

1. Ignition OFF/vehicle OFF, and all vehicle systems OFF, disconnect the harness connector at the S51 Telematics Button Assembly. It may take up to 2 min for all vehicle systems to power down.
2. Test for less than 10 Ω between the ground circuit terminal 6 and ground.
   • If 10 Ω or greater 
   1. Ignition OFF/vehicle OFF.
   2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
   • If less than 10 Ω 
3. Ignition ON/vehicle in Service Mode.
4. Test for less than 1 V between the control circuit terminal 5 and ground while commanding the Red Indicator OFF with a scan tool.
   • If 1 V or greater 
   1. Ignition OFF/vehicle OFF, disconnect the X1 harness connector at the K73 Telematics Communication Interface Control Module, ignition ON/vehicle in Service Mode.
   2. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K73 Telematics Communication Interface Control Module.
   • If less than 1 V 
5. Test for greater than 8 V between the control circuit terminal 5 and ground while commanding the Red Indicator ON with a scan tool.
   • If 8 V or less 
   1. Ignition OFF/vehicle OFF, disconnect the X1 harness connector at the K73 Telematics Communication Interface Control Module.
   2. Test for infinite resistance between the control 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 control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K73 Telematics Communication Interface Control Module.
   • If greater than 8 V 
6. Test or replace the S51 Telematics Button Assembly.