Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000025DI0 |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [09/2022 - 11/2022] |
Title: LIGHTING (EXT): LIGHTING SYSTEM (for TMMMS Made): High Beam Headlight Circuit; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022] |
High Beam Headlight Circuit
|
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the high beam headlights.
WIRING DIAGRAM
for LED Type Turn Signal Light
for Bulb Type Turn Signal Light
CAUTION / NOTICE / HINT
NOTICE:
-
Inspect the fuses for circuits related to this system before performing the following procedure.
-
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*
Click here
-
Check the operation of the low beam headlights. If the low beam headlights do not operate normally, refer to Problem Symptoms Table.
Click here
PROCEDURE
1.
|
PERFORM ACTIVE TEST 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 / Main Body / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Main Body > Active Test
Tester Display
|
Measurement Item
|
Control Range
|
Diagnostic Note
|
Head Light Hi
|
High beam headlights
|
OFF or ON
|
-
|
Body Electrical > Main Body > Active Test
Tester Display
|
Head Light Hi
|
OK:
High beam headlights illuminate.
NG
|
|
|
2.
|
INSPECT NO. 1 INTEGRATION RELAY
|
(a) Remove the No. 1 integration relay.
Click here
(b) Inspect the No. 1 integration relay.
Click here
OK
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (POWER SOURCE - NO. 1 INTEGRATION RELAY)
|
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
1B-9 - Body ground
|
Always
|
11 to 14 V
|
1B-11 - Body ground
|
Always
|
11 to 14 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
4.
|
CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
|
(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
1B-12 - I85-13 (DIM)
|
Always
|
Below 1 Ω
|
1B-12 or I85-13 (DIM) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|