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Input signal from the hazard
warning lamp switch is used to operate the functions below.
If the signal is abnormal, these functions will not work
normally.
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- Keyless entry system (encrypted code
registration)
- Hazard warning lamp
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- Malfunction of the hazard warning lamp
switch
- Malfunction of the ETACS-ECU
- Damaged harness wires and connectors
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![](../../../img/54/AC313416AO00ENG.png)
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Q.
Is the check result normal?
Go to Step
2.
Repair
the defective connector.
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Refer to GROUP 54A - Hazard
warning lamp switch .
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Q.
Is the check result normal?
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Replace the hazard
warning lamp switch.
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![](../../../img/54/AC313416AO00ENG.png)
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(1)Disconnect the connector, and
measure at the wiring harness side.
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![](../../../img/54/AC312730AD00ENG.png)
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(2)Resistance between C-123 hazard
warning lamp switch connector terminal No.2 and body
earth OK: 2 Ω or less
Q.
Is the check result normal?
Go to Step
5.
Go to Step
4.
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![](../../../img/54/AC313416AO00ENG.png)
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- Check the earth wires for open circuit.
Q.
Is the check result normal?
The trouble can be
an intermittent malfunction (Refer to GROUP 00 - How
to Cope with Intermittent Malfunction ).
Repair the wiring
harness.
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![](../../../img/54/AC313421AB00ENG.png)
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Q.
Is the check result normal?
Go to Step
6.
Repair
the defective connector.
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![](../../../img/54/AC313416AO00ENG.png)
![](../../../img/54/AC313421AB00ENG.png)
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- Check the input line for open circuit.
Q.
Is the check result normal?
Go to Step
7.
Repair
the wiring harness.
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Check that the hazard warning lamp
switch signal is received normally.
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Q.
Is the check result normal?
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The trouble can be
an intermittent malfunction (Refer to GROUP 00 - How
to Cope with Intermittent Malfunction ).
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