Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
- Ignition/Vehicle - Off
- Disconnect the electrical connector: K111 Fuel Pump Driver Control Module
- Connect a test lamp between the test points: Control circuit terminal 16 & Ground
- Ignition - On/Vehicle - In Service Mode
- Perform the scan tool control function: Sensor Supply Voltage - On and Off
Verify the test lamp turns On and Off.
- If the test lamp is always Off
- Ignition/Vehicle - Off & Remove - Test lamp
- Disconnect the appropriate electrical connector: K20 Engine Control Module
- Test for infinite resistance between the test points: Control circuit terminal 16@K111 Fuel Pump Driver Control Module & Ground
- If less than infinite resistance - Repair the short to ground on the circuit.
- Go to next step: If infinite resistance
- Test for less than 2 ohms between the test points: Control circuit terminal 16@K111 Fuel Pump Driver Control Module & The other end of the circuit@K20 Engine Control Module
- If 2 ohms or greater - Repair the open/high resistance in the circuit.
- If less than 2 ohms - Replace the component: K20 Engine Control Module
- If the test lamp is always On
- Ignition/Vehicle - Off & Remove - Test lamp
- Disconnect the appropriate electrical connector: K20 Engine Control Module
- Ignition - On/Vehicle - In Service Mode
- Test for less than 1 V between the test points: Control circuit terminal 16@K111 Fuel Pump Driver Control Module & Ground
- If 1 V or greater - Repair the short to voltage on the circuit.
- If less than 1 V - Replace the component: K20 Engine Control Module
- Go to next step: If the test lamp turns On and Off
- Replace the component: K111 Fuel Pump Driver Control Module