Lexus NX: Diagnosis System

DIAGNOSIS SYSTEM

DESCRIPTION

(a) Lighting system data and the Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions, and then perform repairs.

CHECK DLC3

(a) Check the DLC3.

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INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage with the power switch off.

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.

DIAGNOSIS SYSTEM

(a) When a headlight assembly malfunctions, "Headlight System Malfunction Visit Your Dealer" is displayed on the multi-information display.

HINT:

If the system returns to normal, the warning message "Headlight System Malfunction Visit Your Dealer" displayed on the multi-information display turns off.

*a

Multi-information Display

READ NEXT:

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK FOR DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / AFS / Trouble Co

 Fail-safe Chart

FAIL-SAFE CHART FAIL-SAFE FUNCTION (a) Headlight ECU sub-assembly (1) The headlight ECU sub-assembly stops light operation if the following malfunctions are detected. Malfunction Multi-informatio

 Freeze Frame Data

FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever an automatic headlight beam level control system DTC is stored, the headlight ECU subassembly LH stores the current vehicle state as freeze frame data.

SEE MORE:

 Inspection

INSPECTION PROCEDURE 1. INSPECT CYLINDER BLOCK FOR WARPAGE (a) Using a precision straightedge and feeler gauge, measure the warpage of the surface that contacts the cylinder head gasket. Maximum warpage: 0.05 mm (0.00197 in.) If the warpage is more than the maximum, replace the cylinder block.

 Gauges and meters

The meters display various drive information. Meter display When driving mode is in other than Sport mode The units used on the meters may differ depending on the target region. Engine coolant temperature gauge Displays the engine coolant temperature Hybrid System Indicator Displays h

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