Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000028JQ7 |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 -
] |
Title: LIGHTING (EXT): LIGHTING SYSTEM: Hazard Warning Switch Circuit; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] |
Hazard Warning Switch Circuit
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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:
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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.
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When replacing the combination meter assembly, update the ECU security key.
Click here
PROCEDURE
(a) Read the Data List according to the display on the GTS.
Body Electrical > Combination Meter > Data List
Tester Display
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Measurement Item
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Range
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Normal Condition
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Diagnostic Note
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Hazard Flasher Switch
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Hazard warning signal switch signal
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OFF or ON
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OFF: Hazard warning signal switch off
ON: Hazard warning signal switch on
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Body Electrical > Combination Meter > Data List
Tester Display
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Hazard Flasher Switch
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OK:
Normal conditions listed above are displayed.
NG
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2.
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INSPECT HAZARD WARNING SIGNAL SWITCH ASSEMBLY
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Click here
OK
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3.
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CHECK HARNESS AND CONNECTOR (HAZARD WARNING SIGNAL SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY AND BODY GROUND)
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(a) Disconnect the I4 combination meter assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
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Condition
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Specified Condition
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I38-6 (HAZ) - I4-12 (HZSW)
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Always
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Below 1 Ω
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I38-6 (HAZ) or I4-12 (HZSW) - Body ground
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Always
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10 kΩ or higher
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I38-3 (E) - Body ground
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Always
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Below 1 Ω
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NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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