Hazard Warning Switch Circuit [08/2013 - ]: Procedure
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- READ VALUE USING TECHSTREAM
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Combination Meter / Data List.
- Read the display on the Techstream.COMBINATION METER
Tester Display Measurement Item/Range Normal Condition Diagnostic Note Hazard Flasher Switch Hazard switch signal/ON or OFF ON: Hazard switch on
OFF: Hazard switch off- OK
Normal conditions listed above are displayed.
Result
Result Proceed to OK A NG (for Multi-media Module Receiver Type) B NG (for Radio Receiver Type) C
B → See step 2
C → See step 4
A → See step 7
- INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY (HAZARD SWITCH)
- Remove the multi-media module receiver assembly. Refer to REMOVAL [08/2013 - ] .
- Inspect the multi-media module receiver assembly (hazard switch). Refer to INSPECTION [08/2013 - ] .
NG → See step 8
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY)
- Disconnect the H13 combination meter assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition H98-9 (HAZ) - H13-11 (HZSW) Always Below 1 Ω H98-9 (HAZ) - Body ground Always 10 kΩ or higher H97-12 (GND1) - Body ground Always Below 1 Ω
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 6
- INSPECT RADIO RECEIVER ASSEMBLY (HAZARD SWITCH)
- Remove the radio receiver assembly. Refer to REMOVAL [08/2013 - ] .
- Inspect the radio receiver assembly (hazard switch). Refer to INSPECTION [08/2013 - ] .
NG → See step 9
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY)
- Disconnect the H13 combination meter assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
W/ MULTI-DISPLAY :Tester Connection Condition Specified Condition H90-6 (HAZ) - H13-11 (HZSW) Always Below 1 Ω H90-6 (HAZ) - Body ground Always 10 kΩ or higher H90-20 (GND1) - Body ground Always Below 1 Ω W/O MULTI-DISPLAY :Tester Connection Condition Specified Condition H42-1 (HAZ) - H13-11 (HZSW) Always Below 1 Ω H42-1 (HAZ) - Body ground Always 10 kΩ or higher H42-9 (GND) - Body ground Always Below 1 Ω
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 6
- REPLACE COMBINATION METER ASSEMBLY. Refer to REMOVAL [08/2013 - ]
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [08/2013 - ]
- REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY. Refer to REMOVAL [08/2013 - ]
- REPLACE RADIO RECEIVER ASSEMBLY. Refer to REMOVAL [08/2013 - ]