Circuit/System Testing
WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition/Vehicle & All vehicle systems - Off
- Disconnect the electrical connector: K9 Body Control Module
- Ignition - On / Vehicle - In Service Mode
- Momentarily connect a 3 A fused jumper wire between the test points: Control circuit terminal 19 X5 & Ground
Verify the component turns On and Off when connecting and disconnecting the jumper wire: P12 Horn
- If the component does not turn On and Off
- Ignition/Vehicle - Off & Remove - Jumper wire(s)
- Disconnect the electrical connector: X1X50A Fuse Block - Underhood
- Ignition - On / Vehicle - In Service Mode
- Test for less than 1 V between the test points: Control circuit terminal 19 X5 @ Control module harness & Ground
- If 1 V or greater - Repair the short to voltage on the circuit.
- If less than 1 V
- Ignition/Vehicle - Off
- Test for infinite resistance between the test points: Control circuit terminal 19 X5 @ Control module harness & Ground
- If less than infinite resistance - Repair the short to ground on the circuit.
- If infinite resistance
- Test for less than 2 Ω between the test points: Control circuit terminal 19 X5 @ Control module harness & Terminal 21 X1 @ Fuse Block Harness
- If 2 Ω or greater - Repair the open/high resistance in the circuit.
- If less than 2 Ω - Test or replace the component: X50A Fuse Block - Underhood
- If the component turns On and Off
- Replace the component: K9 Body Control Module