[Previous][Next]
DTC P24D6-00: Fuel tank pressure sensor circuit performance
 
 
 
 
CIRCUIT OPERATION
  • A power voltage of 5 volts is applied to the fuel tank pressure sensor connector terminal number 3 from the ECM connector terminal number 77.
  • The power voltage is grounded to the ECM connector terminal number 78 from the fuel tank pressure sensor connector terminal number 1.
  • The signal voltage according to the pressure inside the fuel tank is output to the ECM connector terminal number 88 from the fuel tank pressure sensor connector terminal number 2.
 
 
TECHNICAL DESCRIPTION
  • The ECM monitors the fuel tank pressure sensor output voltage.
  • The ECM determines whether the fuel tank pressure sensor signal voltage is within normal operating parameters.
 
 
MONITOR EXECUTION
Once per driving cycle.
 
 
MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Evaporative emission purge solenoid monitor
  • Bypass valve monitor
  • Fuel tank solenoid valve monitor
  • Switching valve monitor
  • Canister pressure sensor monitor
  • Manifold absolute pressure sensor monitor
  • Fuel tank pressure sensor monitor
  • Fuel tank differential pressure sensor monitor
  • Barometric pressure sensor/manifold absolute pressure correlation
  • Barometric pressure sensor monitor
  • Fuel level sensor monitor
  • Engine off timer monitor
  • Controller area network (CAN) monitor
Sensor (The sensors below are determined to be normal)
  • Engine coolant temperature sensor
  • Intake air temperature sensor
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
  • Power supply mode of electric motor switch is OFF.
  • 12V battery positive voltage is 11 volts or higher.
  • Engine coolant temperature is higher than 4°C (39°F) and lower than 35°C (95°F).
  • Intake air temperature at ECM wake-up is higher than 4°C (39°F) and lower than 35°C (95°F).
  • ECM is woken up in 5, 6 or 8.5 hours since the power supply mode of electric motor switch was OFF.
  • Barometric pressure is 76 kPa (22.4 in.Hg) or higher.
  • Fuel level is 85 percent or less.
  • Fuel tank pressure at ECM wake-up is less than 19.96 kPa (5.89 in.Hg) or more than 40.00 kPa (11.81 in.Hg).
  • Accumulated time that electric motor switch is ON is more than 1,620 seconds.
Judgment Criteria
  • The fuel tank absolute pressure subtracted from the barometric pressure measured by the fuel tank pressure sensor is lower than specified pressure for 180 seconds.
  • The fuel tank pressure subtracted from the barometric pressure measured by the fuel tank differential pressure sensor is specified pressure for 180 seconds.
  • The evaporative emission canister pressure is lower than specified pressure for 180 seconds.
 
 
FAIL-SAFE AND BACKUP FUNCTION
Indicates "REFUELING SYSTEM SERVICE REQUIRED" on the information screen in the multi-information display.
 
 
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 4 OBD- II DRIVE CYCLE.
 
 
TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS CODE TO BE SET ARE:)
  • Fuel tank pressure sensor failed.
  • Fuel tank pressure sensor 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. Using scan tool (M.U.T.-III SE), read the DTC.
Use scan tool (M.U.T.-III SE) to check and see if a DTC P24D7-00 or P24D8-00 is set.
Q: Is DTC P24D7-00 or P24D8-00 set?
Troubleshoot the fuel tank pressure sensor circuit (Refer to DTC P24D7-00: EVAP System Absolute Pressure Sensor Circuit Low DTC P24D7-00: EVAP System Absolute Pressure Sensor Circuit Low, refer to DTC P24D8-00: EVAP System Absolute Pressure Sensor Circuit High DTC P24D8-00: EVAP System Absolute Pressure Sensor Circuit High).
 
2.STEP 2. 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 800: Tank pressure sensor stuck NG
Q: Is the check result normal?
Intermittent malfunction (Refer to GENERAL INFORMATION, General Information – How to Use Troubleshooting/Inspection Service Points – How to Cope with Intermittent Malfunctions HOW TO COPE WITH INTERMITTENT MALFUNCTIONS).
Replace the fuel tank pressure sensor (Refer to ENGINE, Fuel Supply – Fuel Tank – Fuel Tank Disassembly and Assembly FUEL TANK DISASSEMBLY AND ASSEMBLY). Then
 
3.STEP 3. Using scan tool (M.U.T.-III SE) to check the data list after perform the evaporative emission system monitor test.
(1) Perform the evaporative emission system monitor test (Refer to EVAPORATIVE EMISSION CONTROL SYSTEM MONITOR TEST).
(2) Use scan tool (M.U.T.-III SE) to check the data list (Refer to DATA LIST REFERENCE TABLE).
  • Item number 800: Tank pressure sensor stuck NG
Q: Is the check result normal?
The inspection is complete.
Replace the ECM (Refer to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION).