Lexus NX: Hazard Warning Switch Circuit
DESCRIPTION
When the combination meter receives a hazard warning signal switch signal, the flasher IC turns on and hazard control is performed.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the combination meter assembly, make sure to replace it with a new one.
PROCEDURE
| 1. | READ VALUE USING TECHSTREAM (HAZARD FLASHER SWITCH) |
(a) Using the Techstream, read the Data List.
Click here .gif)
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Hazard Flasher Switch | Hazard warning signal switch signal | ON or OFF | ON: Hazard switch on OFF: Hazard switch off | - |
| Tester Display |
|---|
| Hazard Flasher Switch |
| OK | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
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| 2. | INSPECT AIR CONDITIONING CONTROL ASSEMBLY (HAZARD WARNING SWITCH) |
(a) Remove the air conditioning control assembly (hazard warning switch).
Click here
(b) Inspect the air conditioning control assembly (hazard warning switch).
Click here
| NG | | REPLACE AIR CONDITIONING CONTROL ASSEMBLY (HAZARD WARNING SIGNAL SWITCH) |
|
| 3. | CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY [HAZARD WARNING SWITCH] - COMBINATION METER ASSEMBLY) |
(a) Disconnect the I13 air conditioning control assembly (hazard warning switch) connector.
(b) Disconnect the I11 combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I13-9 (HAZ) - I11-2 (HZSW) | Always | Below 1 Ω |
| I13-11 (LJB) - I11-12 (HAZM) | Always | Below 1 Ω |
| I13-14 (GND) - Body ground | Always | Below 1 Ω |
| I13-9 (HAZ) or I11-2 (HZSW) - Body ground | Always | 10 kΩ or higher |
| I13-11 (LJB) or I11-12 (HAZM) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE COMBINATION METER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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SEE MORE:
Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE CHILD RESTRAINT SEAT TETHER ANCHOR COVER (a) Detach the 2 claws, 2 guides and remove the child restraint seat tether anchor cover. 2. REMOVE VANITY LIGHT ASSEMBLY HINT: Use the same procedure for both vanity light assemblies.. (a) Detach the 2 claws
Removal
REMOVAL PROCEDURE 1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM Click here 2. REMOVE RADIATOR ASSEMBLY Click here 3. REMOVE FRONT BUMPER COVER (a) for Sport Package: Click here (b) except Sport Package: Click here 4. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY (a) Remove the bolt and discon
