Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Saab >> 2011 >> 9-4X 3.0i, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Management And Fuel System, V6 >> Fault diagnosis, fault codes >> DTC P0641: 5 V Reference Circuit; DTC P06A6: 5 V Reference Performance (Fuel Pump Control Module) >> Reference Information >> Scan Tool Reference

Scan Tool Reference

CONTROL MODULE REFERENCES for scan tool information

Circuit/System Testing

  1. Ignition OFF, disconnect harness connector of the B47 fuel pressure sensor.
  2. Ignition OFF, test for less than 1.0 Ω between the low reference circuit terminal 2 and ground.
  3. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K27 fuel pump control module.
  4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 3 and ground.
  5. If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K27 fuel pump control module.
  6. If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel pump control module.
  7. If all circuits test normal, replace the B47 fuel pressure sensor.
scientia non olet · About Mike's Workshop Manuals