Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026YJ5 |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [09/2022 - 11/2022] |
Title: LIGHTING (INT): LIGHTING SYSTEM (except TMMMS Made): IG Signal Circuit; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022] |
DESCRIPTION
This circuit detects the ignition switch ON or off condition, and sends it to the main body ECU (multiplex network body ECU).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
PROCEDURE
1.
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READ VALUE USING TECHSTREAM
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(a) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > 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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IGR Power
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Ignition switch ON signal
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OFF or ON
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OFF: Ignition switch off
ON: Ignition switch ON
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-
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Body Electrical > Main Body > Data List
OK:
Normal conditions listed above are displayed.
NG
|
|
|
2.
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CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - POWER SOURCE AND BODY GROUND)
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(a) Disconnect the 8A, 8D and 8K power distribution box assembly connectors.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
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Condition
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Specified Condition
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8K-1 - Body ground
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Always*1
Ignition switch off*2
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11 to 14 V
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8D-17 - Body ground
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Ignition switch off
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Below 1 V
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8D-17 - Body ground
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Ignition switch ON
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11 to 14 V
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(c) 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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8A-8 - Body ground
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Always
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Below 1 Ω
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8D-8 - 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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OK
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|
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3.
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INSPECT POWER DISTRIBUTION BOX ASSEMBLY
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(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Click here
(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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8K-1 - MB-27 (IGR)
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Auxiliary battery not connected to 8D-17 - 8A-8 or 8D-8
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10 kΩ or higher
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8K-1 - MB-27 (IGR)
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Auxiliary battery positive (+) → 8D-17
Auxiliary battery negative (-) → 8A-8 or 8D-8
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Below 1 Ω
|
|