Lexus NX: System Diagram

SYSTEM DIAGRAM

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 How To Proceed With Troubleshooting

PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. CONFIRM PROBLEM SYMPTOMS NEXT 3. CUSTOMER PROBLEM ANALYSIS (a) Check if the vehicle has be

 On-vehicle Inspection

ON-VEHICLE INSPECTION PROCEDURE 1. CHECK AUXILIARY BATTERY (a) Check that the auxiliary battery cables are connected to the correct terminals. HINT: If they are not, connect them properly. (b) Check t

 Networking

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 Invalid Data Received from HVAC Control Module (U0424-537)

DESCRIPTION If there is a malfunction in the air conditioning amplifier assembly, DTC U0424-537 will be stored. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate U0424-537 Invalid Data Received from HVAC Control Module Air conditioning amplifier as

 Diagnosis System

DIAGNOSIS SYSTEM DESCRIPTION (a) Front power seat control system (w/ Memory) data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs. CHE

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