Circuit/System Testing

NOTE:

It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.

Ignition/Vehicle & All vehicle systems » Off
Disconnect the electrical connector: S51 Telematics Button Assembly
Test for less than 10 Ω between the test points: Ground circuit terminal 6 & Ground
- If 10 Ω or greater
1. Disconnect the ground connection:
2. Test for less than 2 Ω between the test points: Ground circuit terminal 6 & Ground Connection
  - 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
Ignition » On / Vehicle » In Service Mode
Perform the scan tool control function: Red Indicator Command » Off
Test for less than 1 V between the test points: Control circuit terminal 5 at Component harness & Ground
- If 1 V or greater
1. Ignition/Vehicle » Off
2. Disconnect the electrical connector: X1 at K73 Telematics Communication Interface Control Module
3. Ignition » On / Vehicle » In Service Mode
4. Test for less than 1 V between the test points: Control circuit terminal 5 at Component harness & Ground
  - If 1 V or greater » Repair the short to voltage on the circuit.
  - If less than 1 V » Replace the component: K73 Telematics Communication Interface Control Module
- If less than 1 V
Perform the scan tool control function: » Red Indicator Command On
Test for greater than 8 V between the test points: Control circuit terminal 5 at Component harness & Ground
- If 8 V or less
1. Ignition/Vehicle » Off
2. Disconnect the electrical connector: X1 at K73 Telematics Communication Interface Control Module
3. Test for infinite resistance between the test points: Control circuit terminal 5 at Component harness & Ground
  - If less than infinite resistance » Repair the short to ground on the circuit.
  - If infinite resistance
1. Ignition/Vehicle » Off
2. Disconnect the electrical connector: X1 at K73 Telematics Communication Interface Control Module
3. Test for less than 2 Ω between the test points: Control circuit terminal 5 at Component harness & Terminal 2 at Control module harness
  - If 2 Ω or greater » Repair the open/high resistance in the circuit.
  - If less than 2 Ω » Replace the component: K73 Telematics Communication Interface Control Module
- If greater than 8 V
Test or replace the component: S51 Telematics Button Assembly