2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 367
2. Listen to each fuel injector operating sound.
Clicking sound should be heard.
Is the inspection result normal?
YES - GO TO 7.
NO - Perform trouble diagnosis for FUEL INJECTOR, See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and
Inspection/Component Tests and General Diagnostics/Diagnosis Procedure.
7.CHECK FUEL INJECTOR
1. Remove fuel injector assembly. See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Rail/Service and Repair/Removal and
Installation.
Keep fuel hose and all fuel injectors connected to fuel tube.
2. Confirm that the engine is cooled down and there are no fire hazards near the vehicle.
3. Disconnect all fuel injector harness connectors.
4. Disconnect all ignition coil harness connectors.
5. Prepare pans or saucers under each fuel injector.
6. Crank engine for approximately 3 seconds.
Check that fuel does not drip from fuel injector.
Is the inspection result normal?
YES - GO TO 8.
NO - Replace the fuel injectors from which fuel is dripping. Always replace O-ring with new one.
8.CHECK INTERMITTENT INCIDENT
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble
Diagnosis For Intermittent Incident/Description.
- INSPECTION END
P0181
P0181 FTT SENSOR
Description
The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. The sensor modifies a voltage signal from the ECM.
The modified signal returns to the ECM as the fuel temperature input. The sensor uses a thermistor which is sensitive to the change in temperature.
The electrical resistance of the thermistor decreases as temperature increases.
