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EuroVan 2.8L (Engine Code AXK)

  1. Ensure all fuses are okay, fuel pump relay must be okay, battery voltage is at least 11.5 volts, all electrical accessories are off and A/C is off. Verify engine is mechanically sound and engine coolant temperature is at least 176°F (80°C). On vehicles with M/T, gear shifter must be in neutral with parking brake set. On vehicles with A/T, selector lever must be in park or neutral with parking brake set. Go to next step.
  2. Check air induction system for leaks. Repair as necessary. Verify repair. Test is complete. If no air leaks are found, go to next step.
  3. Connect Scan Tool. See DATA LINK CONNECTOR  . Start engine and idle. Using scan tool, check air mass drawn in by engine, see AIR MASS SPECIFICATIONS  table. If reading is okay, go to next step, (voltage supply for MAF sensor needs to be checked). If reading is not okay go to next step, (voltage supply for MAF sensor needs to be checked).
  4. Turn ignition off. Disconnect MAF sensor 5-pin connector. Connect DVOM to measure voltage between MAF sensor 5-pin connector, terminal No. 2 and ground. See Figure . Start vehicle and run at idle. Voltage should be a minimum of 11.5 volts. Turn ignition off. If reading is okay, go to step  6 . If reading is not okay, go to next step.
  5. Check wiring from MAF sensor 5-pin connector, terminal No. 2 and fuel pump relay (J17). See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Repair as necessary. Verify repair, go to next step.
  6. Turn ignition on. Using DVOM measure voltage between MAF sensor 5-pin connector, terminal No. 4 and ground. Voltage should be 4.5-5.5 volts. If reading is not okay, repair as necessary, go to next step. If reading is okay, go to next step.
  7. Disconnect ECM harness connector, leave ECM harness connector disconnected. Connect Test Box (VAG 1598/31) to ECM harness connector. See CONNECTING VAG TEST BOX  . Using DVOM, check resistance between the following MAF sensor (G70) harness connector terminals and test box sockets.
    • MAF sensor harness connector terminal No. 3 and test box socket No. 27.
    • MAF sensor harness connector terminal No. 4 and test box socket No. 53.
    • MAF sensor harness connector terminal No. 5 and test box socket No. 29.
    Resistance should be a maximum of 1.5 ohms for each reading. Repair as necessary. After repairs, erase DTC memory. Verify repair. Test is complete. Go to next step.
  8. Check wires in MAF sensor harness connector for short circuits to one another. Check wires in MAF sensor harness connector for short circuits to ground and B+. Repair as necessary. After repairs, erase DTC memory. Verify repair. Test is complete. Go to next step.
  9. If all wiring, voltage checks and grounds are okay and DTC P0101/16485, DTC P0102/16486 or DTC P0103/16487 return, replace MAF sensor (G70).
  10. After reconnecting ECM, it is necessary to perform relearn procedure. See TEST DRIVE RELEARN PROCEDURE  .
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