Toyota Camry (XV70): Hazard Warning Switch Circuit
DESCRIPTION
The combination meter assembly receives the hazard warning signal switch assembly on signal and controls the operation of the hazard warning lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
PROCEDURE
|
1. | READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Combination Meter > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Hazard Flasher Switch |
Hazard warning signal switch signal |
OFF or ON | OFF: Hazard warning signal switch off ON: Hazard warning signal switch on |
- |
|
Tester Display |
|---|
|
Hazard Flasher Switch |
OK:
Normal conditions listed above are displayed.
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
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|
2. | INSPECT HAZARD WARNING SIGNAL SWITCH ASSEMBLY |
(a) Remove the hazard warning signal switch assembly.
Click here
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(b) Inspect the hazard warning signal switch assembly.
Click here
| NG | |
REPLACE HAZARD WARNING SIGNAL SWITCH ASSEMBLY |
|
|
3. | CHECK HARNESS AND CONNECTOR (HAZARD WARNING SIGNAL SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY AND BODY GROUND) |
(a) Disconnect the K20 combination meter assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
K146-6 (TB) - K20-3 (HAZ) |
Always | Below 1 Ω |
|
K146-6 (TB) or K20-3 (HAZ) - Body ground |
Always | 10 kΩ or higher |
|
K146-3 (E) - Body ground |
Always | Below 1 Ω |
| OK | |
REPLACE COMBINATION METER ASSEMBLY |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
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