- DTCs that indicate temporary malfunctions
- Existence of malfunction has not been confirmed but there is a possibility
Lexus NX: Dtc Check / Clear
Lexus NX Service Manual / Engine & Hybrid System / 2ar-fxe (hybrid / Battery Control) / Hybrid Control System / Dtc Check / Clear
DTC CHECK / CLEAR
CHECK FOR DTCS
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(e) Check the DTCs and freeze frame data, and then write them down.
(f) Check the details of the DTCs.
| Display Item | Description |
|---|---|
| Current (Current DTC) | DTCs that indicate malfunctions |
| Pending (Pending DTC) | |
| History (History DTC) | DTCs that were stored in the past |
- A pending DTC is a DTC that is stored in the hybrid vehicle control ECU during the 1st trip when the 2 trip detection logic is used.
- Both current (Current DTC) and Pending (Pending DTC) record freeze frame data.
(1) Enter the following menus: Powertrain / Hybrid Control / Utility / Check Mode.
Powertrain > Hybrid Control > Utility| Tester Display |
|---|
| Check Mode |
(2) Check items on the display and press "Next".
NOTICE:
- All the stored DTCs and freeze frame data are cleared if the hybrid vehicle control ECU is changed from normal mode to check mode. Before changing modes, always check and note any DTCs and freeze frame data.
- Changing from normal mode to check mode function is not available when the power switch is turned on (READY).
- If a DTC is stored, check and note the DTC and freeze frame data following the Techstream display, then change from normal mode to check mode.
CHECK FREEZE FRAME DATA AND INFORMATION
(a) If a DTC is stored, select it in order to display its freeze frame data.
(b) Read the freeze frame data recorded when the DTC was stored.
NOTICE:
A 3-digit information code (INF code) will be displayed as the value for one of the Information 1 to Information 5 lines.
(c) Read the information for the information code.
(1) Select the item from among Information 1 to Information 5 that has an information code and click the engine icon to view the additional information.
CHECK FOR DTCS (SYSTEMS EXCEPT HYBRID VEHICLE CONTROL ECU)
HINT:
The hybrid vehicle control ECU maintains communication with other computers, including the ECM, skid control ECU assembly and power steering ECU assembly. Therefore, if the hybrid vehicle control ECU outputs a warning, it is necessary to check and record the DTCs of all systems.
(a) If DTCs are stored, check the relevant systems.
HINT:
If DTCs for the CAN communication system are stored in addition to other DTCs, first troubleshoot and repair any malfunctions in the CAN communication system.
CLEAR DTCS
NOTICE:
Clearing the DTCs will also clear the freeze frame data, information (Click here .gif)
) and operation history data (Click here ).
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(e) Clear DTCs and freeze frame data.
Powertrain > Hybrid Control > Clear DTCsCLEAR PERMANENT DTC
HINT:
Even if the following procedure is not performed, permanent DTCs are cleared by obtaining a normal judgment during 3 consecutive driving cycles.
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(e) Check if permanent DTCs are stored.
HINT:
If permanent DTCs are not output, it is not necessary to continue this procedure.
(f) Clear the DTCs.
(g) Perform the respective confirmation driving patterns in order to obtain a normal judgment for the output DTCs.
HINT:
- Confirmation driving patterns do not need to be performed for misfire and fuel system DTCs.
-
For the confirmation driving pattern, refer to the procedures for the relevant DTC.
Click here
(h) Perform the universal trip.
HINT:
The driving pattern to obtain a normal judgment and the universal trip driving can be performed consecutively in the same driving cycle.
(1) Put the engine in inspection mode.
(2) Idle the engine for 30 seconds or more.
(3) Drive the vehicle at 40 km/h (25 mph) or more for a total of 5 minutes or more.
HINT:
It is possible to complete the drive pattern even if the vehicle decelerates to less than 40 km/h (25 mph) during the driving cycle provided that the vehicle is driven at 40 km/h (25 mph) or more for a total of 5 minutes.
(4) Allow 10 minutes or more to elapse from the time the engine is started.
(i) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Powertrain > Hybrid Control > Trouble Codes(j) Check that the permanent DTCs have been cleared.
HINT:
The permanent DTCs are cleared when the universal trip is completed.
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