STEP 1. Using scan tool MB991958, check data list item 53: Fuel Tank Temperature Sensor.
caution | To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958. |
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to the data reading mode for item 53, Fuel Tank Temperature Sensor.- Approximately the same as the ambient air temperature when the engine is cooled.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the sensor operating properly?
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions . Go to Step 2.
STEP 2. Check harness connector D-24 at fuel pump module for damage.
STEP 3. Check the fuel tank temperature sensor.
(1) Disconnect the fuel pump module connector D-24.
(2) Measure the resistance between terminal No. 1 and No. 3 of the fuel pump module.Standard value: 0.5 - 12.0 kΩ
Is the measured resistance between 0.5 and 12.0 kΩ?
Go to Step 4. Replace the fuel pump module. Then go to Step 8.
STEP 4. Check the continuity at fuel pump module harness side connector D-24.
STEP 5. Check harness connector B-27 at ECM for damage.
STEP 6. Check for harness damage between fuel pump module connector D-24 (terminal No. 3) and ECM connector B-27 (terminal No. 115).
STEP 7. Using scan tool MB991958, check data list item 53: Fuel Tank Temperature Sensor.
STEP 8. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 14 . (2) Check the diagnostic trouble code (DTC).
Is DTC P0181 set?
Retry the troubleshooting. The inspection is complete.