Lexus NX: Fuel Run Out (P3193)

Lexus NX Service Manual / Engine & Hybrid System / 2ar-fxe (engine Control) / Sfi System / Fuel Run Out (P3193)

DESCRIPTION

The ECM receives the fuel empty low level (below approximately 8.4 L) signal from the combination meter assembly (meter ECU) to detect if the vehicle is running out of fuel.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P3193	Fuel Run Out	All of the following conditions are met (1 trip detection logic): Power switch on (IG). The ECM receives the fuel empty low level (below approximately 8.4 L) signal from the combination meter assembly (meter ECU). DTC detection conditions of either DTC P3190 or P3191 are met.	- (This DTC indicates that the vehicle ran out of fuel and does not indicate the malfunction of part.)	Does not come on	DTC stored

MONITOR DESCRIPTION

This DTC indicates that the vehicle ran out of fuel. If the ECM receives the fuel low level (below approximately 8.4 L) signal from the combination meter assembly (meter ECU) and the DTC detection conditions of either DTC P3190 or P3191 are met while the power switch is on (IG) or the engine is operating, the ECM stores this DTC.

MONITOR STRATEGY

Frequency of Operation

Continuous

CONFIRMATION DRIVING PATTERN

NOTICE:

If the MIL (malfunction indicator lamp) or warning light illuminates, immediately end the confirmation driving pattern. When DTCs P3190, P3191 and P3193 are output, the engine may be stopped due to the engine condition. In this case, the HV battery will no longer be chargeable and the distance that the vehicle can be driven will be limited.

Apply the parking brake firmly.
Connect the Techstream to the DLC3.
Turn the power switch on (IG) and turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (READY) and turn the Techstream on.
Fully depress the accelerator pedal for 10 seconds with the vehicle stopped, park (P) selected and the brake pedal depressed [A].
NOTICE:

As soon as the engine starts, release the accelerator pedal.
Release the parking brake.
Drive the vehicle at an average of approximately 40 km/h (25 mph) or more until the total engine operation time is 10 minutes or more [B].
CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
- It is not necessary to maintain the vehicle speed at 40 km/h (25 mph) throughout the road test.
- If the engine stops, further depress the accelerator pedal to restart the engine.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
Read the DTCs (including pending DTCs).
HINT:
- If a DTC (include pending DTC) is output, the system is malfunctioning.
- If a DTC (include pending DTC) is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
Input the DTC: P3193.

Check the DTC judgment result.

Techstream Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

HINT:

If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

If no DTC is output, perform a universal trip and check for permanent DTCs.
Click here
HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.

CAUTION / NOTICE / HINT

HINT:

When DTCs P3190, P3191 and P3193 are output, the engine may be stopped due to the engine condition.
At this time, after adding fuel or performing repairs, clear the DTCs. Then turn the power switch off to return to the normal condition.
When this DTC is output and the engine is stopped, the HV battery cannot be charged since the vehicle is driven with the motor only. If the vehicle continues to be driven under this condition, the HV battery becomes depleted ultimately and the power switch cannot be turned on (READY).

PROCEDURE

1.	CHECK SHORTAGE OF FUEL

(a) Check the amount of fuel remaining.

OK:

There is enough fuel.

HINT:

DTCs P3190, P3191 and/or P3193 may be output if the vehicle ran out of fuel in the past.
If not enough fuel is added, DTC P3190, P3191 or P3193 may be output again. If the engine cannot be started because the vehicle is out of fuel, add fuel until the fuel level warning light turns off.

GO TO STEP 3

2.	REFILL FUEL

(a) Add fuel until the fuel level warning light turns off.

3.	CHECK WHETHER DTC OUTPUT RECURS (DTC P3193)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Clear the DTCs.

Powertrain > Engine and ECT > Clear DTCs

(e) Turn the power switch off and wait for at least 30 seconds.

(f) Turn the power switch on (READY).

(g) Turn the Techstream on.

(h) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(i) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

(j) Read the DTCs.

Click here

Powertrain > Engine and ECT > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTC P3190 or P3191 is output	B
DTC P3190 or P3191 and other DTCs are output	C

END

GO TO DTC P3190, P3191

GO TO DTC CHART

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