Circuit/System Testing
WARNING: This page is about a different car, the 2014 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the KR46 front fog lamp relay, ignition ON.
- Verify a test lamp illuminates between the B+ circuit terminal 30 and ground.
- If the test lamp does not illuminate
Replace the X50A fuse block - underhood.
- If the test lamp illuminates
- If the test lamp does not illuminate
- Verify a test lamp illuminates between the B+ circuit terminal 86 and ground.
- If the test lamp does not illuminate
Replace the X50A fuse block - underhood.
- If the test lamp illuminates
- If the test lamp does not illuminate
- Ignition OFF, connect a test lamp between the control circuit terminal 85 and B+, ignition ON.
- Verify the test lamp turns ON and OFF when commanding the Front Fog Lamps ON and OFF with a scan tool.
- If the test lamp is always OFF
- Ignition OFF, disconnect the X5 harness connector at the K9 body control module, ignition ON.
- Test for less than 1 V between the control circuit terminal and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V
- Ignition OFF.
- 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 K9 body control module.
- If the test lamp is always ON
- Ignition OFF, disconnect the X5 harness connector at the K9 body control module.
- Test for infinite resistance between the control circuit terminal and ground.
- If less than infinite resistance, repair the short to ground on the circuit.
- If infinite resistance, replace the K9 body control module.
- If the test lamp turns ON and OFF
- Test or replace the KR46 front fog lamp relay.