LIGHTING SYSTEM Daytime Running Light Relay Circuit
| DTC Code | DTC Name |
|---|---|
| Daytime Running Light Relay Circuit |
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the daytime running lights.
WIRING DIAGRAM
for Hatchback or Wagon
for Sedan
CAUTION / NOTICE / HINT
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
CHECK OPERATION (PARKING LIGHTS)
Check the operation of the parking lights.
OK
The parking lights operate normally.
Result
Proceed to
OK
NG
PERFORM ACTIVE TEST USING GTS
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Body Electrical / Main Body / Active Test.
Check that the daytime running lights illuminate.
Body Electrical > Main Body > Active Test
Tester Display
Measurement Item
Control Range
Diagnostic Note
Daytime Running Light
Daytime running lights
ON/OFF
-
Body Electrical > Main Body > Active Test
Tester Display
Daytime Running Light
OK
The daytime running lights illuminate.
Result
Proceed to
OK
NG
INSPECT DRL RELAY
Remove the DRL relay from the engine room relay block and junction block assembly.
-
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
Result
Proceed to
OK
NG
NG REPLACE DRL RELAY
CHECK HARNESS AND CONNECTOR (DRL RELAY - BATTERY)
Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection
Condition
Specified Condition
1 - Body ground
Always
11 to 14 V
3 - Body ground
Always
11 to 14 V
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (DRL RELAY - HEADLIGHT ASSEMBLY LH AND HEADLIGHT ASSEMBLY RH)
for Hatchback or Wagon
Disconnect the A70*1 or A90*2 headlight assembly LH connector.
Disconnect the A73*1 or A123*2 headlight assembly RH connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Table 1. w/o AFS (Adaptive Front-lighting System) Tester Connection
Condition
Specified Condition
5 - A70-2 (B)
Always
Below 1 Ω
5 - A73-2 (B)
Always
Below 1 Ω
5 - Body ground
Always
10 kΩ or higher
Standard Resistance
Table 2. w/ AFS (Adaptive Front-lighting System) Tester Connection
Condition
Specified Condition
5 - A90-2 (B)
Always
Below 1 Ω
5 - A123-2 (B)
Always
Below 1 Ω
5 - Body ground
Always
10 kΩ or higher
*1: w/o AFS (Adaptive Front-lighting System)
*2: w/ AFS (Adaptive Front-lighting System)
for Sedan
Disconnect the A145 headlight assembly LH connector.
Disconnect the A149 headlight assembly RH connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
5 - A145-4 (B)
Always
Below 1 Ω
5 - A149-4 (B)
Always
Below 1 Ω
5 - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (DRL RELAY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)
Disconnect the 3A instrument panel junction block assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
2 - 3A-53
Always
Below 1 Ω
2 - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
Remove the instrument panel junction block assembly.
for LHD:Click here
for RHD:Click here
Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Measure the resistance according to the value(s) in the table below.
*a
Component without harness connected
(Instrument Panel Junction Block Assembly)
-
-
Standard Resistance
Tester Connection
Condition
Specified Condition
3A-53 - MB-26 (DRL)
Always
Below 1 Ω
Result
Proceed to
OK
NG