Lexus NX: On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT STOP LIGHT CONTROL ECU ASSEMBLY
| (a) Disconnect the stop light control ECU assembly connector. |
|
(b) Measure the voltage and resistance on the wire harness side connector according to the value (s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A3-4 (ESS1) - A3-8 (GND) | Power switch on (IG) | 11 to 14 V |
| A3-6 (+B) - A3-8 (GND) | Power switch off | 11 to 14 V |
| A3-9 (ACC) - A3-8 (GND) | Power switch on (IG) | 11 to 14 V |
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A3-8 (GND) - Body ground | Always | Below 1 Ω |
If the result is not as specified, repair or replace the wire harness or connector.
(c) Reconnect the stop light control ECU assembly connector.
| (d) Measure the voltage according to the value (s) in the table below. Standard Voltage:
If the result is not as specified, replace the stop light control ECU assembly. |
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READ NEXT:
Removal
REMOVAL PROCEDURE 1. REMOVE DOOR SCUFF PLATE ASSEMBLY LH Click here 2. REMOVE COWL SIDE TRIM BOARD LH Click here 3. REMOVE INSTRUMENT SIDE PANEL LH Click here 4. REMOVE NO. 1 INSTRUMENT
Installation
INSTALLATION PROCEDURE 1. INSTALL STOP LIGHT CONTROL ECU ASSEMBLY (a) Attach the clamp to install the stop light control ECU assembly. (b) Connect the connector. 2. INSTALL LOWER NO. 1 INSTRUMENT PANE
SEE MORE:
Parts Location
PARTS LOCATION ILLUSTRATION *A w/ Security Horn Assembly *B w/o Security Horn Assembly *1 HIGH PITCHED HORN ASSEMBLY *2 LOW PITCHED HORN ASSEMBLY *3 HOOD LOCK ASSEMBLY (ENGINE HOOD COURTESY SWITCH) *4 SECURITY HORN ASSEMBLY *5 MAP LIGHT ASSEMBLY *6 THEFT WARNI
Fail-safe Chart
FAIL-SAFE CHART ASC System (a) The stereo component equalizer assembly stores DTCs and freeze frame data and stops sound output if it detects any of the following abnormalities. Item Abnormality Detection Condition Fail-safe Control DTC Output Return Condition CAN communication malfun
