Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.

NOTE:

Additional DTCs will set when disconnecting the components.

Disconnect the electrical connector: B47 Fuel Pressure Sensor
Ignition - On / Vehicle - In Service Mode
Verify the scan tool parameter: Fuel Pump Power Control Module 5V Reference 2 Circuit Status = Malfunction
- If not the specified state after disconnecting a component from the circuit
  Test or replace the component: B47 Fuel Pressure Sensor
- Go to next step: If the specified state with all components disconnected from the circuit
Test for 4.38 to 4.61 V between the test points: 5 V Reference circuit terminal 1 @ B47 Fuel Pressure Sensor & Ground
- If less than 4.38 V
1. Ignition/Vehicle - Off
2. Disconnect the electrical connector: K111 Fuel Pump Driver Control Module
3. Test for infinite resistance between the test points: 5 V Reference circuit terminal 12 @ Control module harness & Ground
  - If less than infinite resistance - Repair the short to ground on the circuit.
  - If infinite resistance - Replace the component: K20 Engine Control Module
- If greater than 4.61 V
1. Ignition/Vehicle - Off
2. Disconnect the electrical connector: K111 Fuel Pump Driver Control Module
3. Ignition - On / Vehicle - In Service Mode
4. Test for less than 1 V between the test points: 5 V Reference circuit terminal 12 @ Control module harness & Ground
  - If 1 V or greater - Repair the short to voltage on the circuit.
  - If less than 1 V - Replace the component: K111 Fuel Pump Driver Control Module
- Go to next step: If between 4.38 and 4.61 V
All OK.