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
.png)
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 |
|
.gif)
| 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 |
READ NEXT:
Taillight Relay Circuit
DESCRIPTION Illumination of the taillights and license plate light is controlled by the main body ECU (multiplex network body ECU). WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
Inspect the fuse
Power Source Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) receives IG signals and supplies power to the headlight ECU sub-assembly via the H-LP relay. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
Cornering Light Circuit
DESCRIPTION The illumination of the fog light assembly (cornering light) is controlled by the headlight ECU sub-assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
The light system (for Tripl
SEE MORE:
Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here 2. REMOVE FRONT TELEVISION CAMERA ASSEMBLY (w/ Panoramic View Monitor System) Click here 3. REMOVE FRONT CENTER ULTRASONIC SENSOR (w/ Intuitive Parking Assist System) Click here 4. REMOVE FRONT BUMPER EXTENSION MO
Communication Error from VSC to HV ECU (P1630)
DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) sends signals such as brake request signals to the hybrid vehicle control ECU. If an abnormal signal is detected, the hybrid vehicle control ECU stores DTC P1630. DTC No. Detection Item DTC Detection Condition Tr
