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Inspection Procedure 15: The fuel filler lid opener switch signal is not received
 
 
cautionBefore replacing the ECM, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
 
 
COMMENTS
When the input signal of the fuel filler lid opener switch malfunctions, the ECM cannot detect the signal of the fuel filler lid opener switch correctly.
 
 
TROUBLESHOOTING HINTS (The most likely causes for this case:)
  • Fuel filler lid opener switch failed.
  • Open fuel filler lid opener switch circuit, harness damage, or connector damage.
  • ECM failed.
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
1.STEP 1. Check fuel filler lid opener switch.
Check the fuel filler lid opener switch itself (Refer to BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY, Door & lock – Removal and Installation – Fuel Filler Lid FUEL FILLER LID OPENER SWITCH REMOVAL AND INSTALLATION).
Q: Is the check result normal?
Replace the fuel filler lid opener switch (Refer to BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY, Door & lock – Removal and Installation – Fuel Filler Lid FUEL FILLER LID OPENER SWITCH REMOVAL AND INSTALLATION).
 
2.STEP 2. Perform resistance measurement at fuel filler lid opener switch connector terminal number 5.
  • Disconnect connector, and measure at harness side.
  • Resistance between fuel filler lid opener switch connector terminal number 5 and ground.
OK: Continuity (2 ohms or less)
Q: Is the check result normal?
 
3.STEP 3. Check of open circuit in wiring harness between fuel filler lid opener switch connector terminal number 5 and ground.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
4.STEP 4. Check of open circuit in wiring harness between fuel filler lid opener switch connector terminal number 7 and ECM connector terminal number 86.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
5.STEP 5. Using scan tool (M.U.T.-III SE), check the data list.
Use scan tool (M.U.T.-III SE) to check the data list (Refer to DATA LIST REFERENCE TABLE).
  • Item number 610: Wake Up signal for Refuel System
Q: Is the check result normal?
Replace the ECM (Refer to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION).
 
6.STEP 6. Check the malfunction symptoms.
Q: Does the malfunction symptom persist?
Replace the ECM (Refer to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION).
Intermittent malfunction (Refer to GENERAL INFORMATION, General Information – How to Use Troubleshooting/Inspection Service Points HOW TO COPE WITH INTERMITTENT MALFUNCTIONS).