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. | | *a | Front view of wire harness connector (to Stop Light Control ECU Assembly) | | |
(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: Tester Connection | Condition | Specified Condition | A3-1 (OUT) - A3-8 (GND) | Brake pedal not depressed → pressed | Below 0 to 1.5 V → 7.5 to 14 V | A3-5 (STP) - A3-8 (GND) | Brake pedal not depressed → pressed | Below 0 to 1.5 V → 7.5 to 14 V | If the result is not as specified, replace the stop light control ECU assembly. | | *a | Component with harness connected (Stop Light Control ECU Assembly) | | |
READ NEXT:
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 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:
INSTALLATION PROCEDURE 1. INSTALL KICK DOOR CONTROL SENSOR (a) Insert the guide, attach the 2 claws and install the kick door control sensor to the kick door control bracket as shown in the illustration. NOTICE:
Do not subject the kick door control sensor to strong impacts or force, and do n
MONITOR DESCRIPTION This monitor will run when the engine is started at an engine coolant temperature of -10 to 50°C (14 to 122°F). The DTC is stored after the engine idles for 13 seconds (2 trip detection logic). The DTC is designed to monitor the ignition timing at cold start. When the engine is
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