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:
Control Module Communication Bus "A" Off (U0073,U0100,U0124,U0126,U0129,U0140,U0155,U0164,U0293)
DESCRIPTION These DTCs are stored if there is a malfunction in the CAN communication system connected to the clearance warning ECU assembly. HINT: If CAN communication system DTCs are stored, they may also be stored in other systems. DTC No. Detection Item DTC Detection Condition Trouble Ar
Internal Control Module A/D Processing Performance (P060B)
MONITOR DESCRIPTION This DTC is stored when a communication error occurs in the ECM. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory P060B Internal Control Module A/D Processing Performance An ECM main CPU communication error (1 trip detection logic).
