Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000028JQB |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 -
] |
Title: LIGHTING (EXT): LIGHTING SYSTEM: High Beam Headlight Circuit; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [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 G16E-GTS)
for LED Type Turn Signal Light (for M20A-FKS, 2ZR-FXE)
for Bulb Type Turn Signal Light (for M20A-FKS)
for Bulb Type Turn Signal Light (for 2ZR-FXE)
CAUTION / NOTICE / HINT
PROCEDURE
(a) Choose the model to be inspected.
Result
|
Proceed to
|
for LED Type Turn Signal Light
|
A
|
for Bulb Type Turn Signal Light
|
B
|
A
|
|
|
2.
|
PERFORM ACTIVE TEST USING GTS
|
(a) Perform the Active Test according to the display on the GTS.
Body Electrical > Main Body > Active Test
Tester Display
|
Measurement Item
|
Control Range
|
Diagnostic Note
|
High Beam Headlight
|
High beam headlights
|
OFF or ON
|
-
|
Body Electrical > Main Body > Active Test
Tester Display
|
High Beam Headlight
|
OK:
High beam headlights illuminate.
Result
|
Proceed to
|
OK
|
A
|
NG (LH side high beam headlight does not illuminate)
|
B
|
NG (RH side high beam headlight does not illuminate)
|
C
|
3.
|
PERFORM ACTIVE TEST USING GTS
|
(a) Perform the Active Test according to the display on the GTS.
Body Electrical > Main Body > Active Test
Tester Display
|
Measurement Item
|
Control Range
|
Diagnostic Note
|
High Beam Headlight
|
High beam headlights
|
OFF or ON
|
-
|
Body Electrical > Main Body > Active Test
Tester Display
|
High Beam Headlight
|
OK:
High beam headlights illuminate.
NG
|
|
|
(a) Choose the model to be inspected.
Result
|
Proceed to
|
for M20A-FKS
|
A
|
for 2ZR-FXE
|
B
|
A
|
|
|
(a) Remove the DIM relay.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
3 - 5
|
Voltage not applied between terminals 1 and 2
|
10 kΩ or higher
|
3 - 5
|
Voltage applied between terminals 1 and 2
|
Below 1 Ω
|
|
|
NG |
|
REPLACE DIM RELAY
|
OK
|
|
|
6.
|
CHECK HARNESS AND CONNECTOR (POWER SOURCE - DIM RELAY)
|
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
1 (DIM relay) - Body ground
|
Always
|
11 to 14 V
|
5 (DIM relay)- Body ground
|
Always
|
11 to 14 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
7.
|
CHECK HARNESS AND CONNECTOR (DIM 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
|
2 (DIM relay) - I85-22 (DIM)
|
Always
|
Below 1 Ω
|
2 (DIM relay) or I85-22 (DIM) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
(a) Remove the H-LP HI relay.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
3 - 5
|
Voltage not applied between terminals 1 and 2
|
10 kΩ or higher
|
3 - 5
|
Voltage applied between terminals 1 and 2
|
Below 1 Ω
|
|
|
NG |
|
REPLACE H-LP HI RELAY
|
OK
|
|
|
9.
|
CHECK HARNESS AND CONNECTOR (POWER SOURCE - H-LP HI RELAY)
|
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
1 (H-LP HI relay) - Body ground
|
Always
|
11 to 14 V
|
5 (H-LP HI relay)- Body ground
|
Always
|
11 to 14 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
10.
|
CHECK HARNESS AND CONNECTOR (DIM 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
|
2 (H-LP HI relay) - I85-22 (DIM)
|
Always
|
Below 1 Ω
|
2 (H-LP HI relay) or I85-22 (DIM) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|