Circuit/System Testing
WARNING: This page is about a different car, the 2012 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.
- Vehicle OFF, disconnect the harness connector at the S51 telematics button assembly.
- Test for less than 10 Ω between the button assembly ground circuit terminal E and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Vehicle in Service Mode, test for less than 1 V between the keypad signal circuit terminal B and ground.
- If greater than the specified range, test the keypad signal circuit for a short to voltage. If the circuit tests normal, replace the K73 telematics communication interface control module.
- Vehicle OFF, test for 0.800 kΩ-1.0 kΩ between the keypad signal circuit terminal B and ground.
- If less than the specified range, test the keypad signal circuit for a short to ground. If the circuit tests normal, replace the K73 telematics communication interface control module.
- If greater than the specified range, test the keypad signal circuit for an open/high resistance. If the circuit tests normal, replace the K73 telematics communication interface control module.
- Vehicle in Service Mode, test for 9.5-10.5 V between the keypad supply voltage circuit terminal A and ground.
- If less than the specified range, test the supply voltage circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the K73 telematics communication interface control module.
- If greater than the specified range, test the supply voltage circuit for a short to voltage. If the circuit tests normal, replace the K73 telematics communication interface control module.
- If all circuits test normal, test or replace the S51 telematics button assembly.